159 Fullstack Jobs - Page 6

Role Purpose The purpose of the role is to create exceptional and detailed architectural application design and provide thought leadership and enable delivery teams to provide exceptional client engagement and satisfaction. Do 1. Develop architectural application for the new deals/ major change requests in existing deals a. Creates an enterprise-wide architecture that ensures systems are scalable, reliable, and manageable. b. Manages application assets and directs the development efforts within an enterprise to improve solution delivery and agility c. Guides how to construct and assemble application components and services to support solution architecture and application development d. Maintains the frameworks and artefacts used in the implementation of an application, with reference to the systematic architecture of the overall application portfolio e. Responsible for application architecture paradigms such as service-oriented architecture (SOA) and, more specifically, microservices, ensuring business achieve agility and scalability for a faster time to market f. Provide solution of RFPs received from clients and ensure overall design assurance Develop a direction to manage the portfolio of to-be-solutions including systems, shared infrastructure services, applications in order to better match business outcome objectives Analyse technology environment, enterprise specifics, client requirements to set a collaboration design framework/ architecture Depending on the clients need with particular standards and technology stacks create complete RFPs Provide technical leadership to the design, development and implementation of custom solutions through thoughtful use of modern technology Define and understand current state solutions and identify improvements, options & tradeoffs to define target state solutions Clearly articulate and sell architectural targets, recommendations and reusable patterns and accordingly propose investment roadmaps Evaluate and recommend solutions to integrate with overall technology ecosystem Tracks industry and application trends and relates these to planning current and future IT needs g. Provides technical and strategic inputs during the project planning phase in the form of technical architectural designs and recommendations h. Account mining to find opportunities in the existing clients i. Collaborates with all relevant parties in order to review the objectives and constraints of solutions and determine conformance with the Enterprise Architecture. j. Identifies implementation risks and potential impacts. k. Create new revenue streams within applications as APIs that can be leveraged by clients l. Bring knowledge of automation in application by embracing Agile and dev-ops principles to reduce manual part 2. Understanding application requirements and design a standardize application a. Creating Intellectual Property in forms of services, patterns, models and organizational approaches b. Designing patterns, best practices and reusable applications that can be used for future references c. Ensure system capabilities are consumed by system components and set criteria for evaluating technical and business value in terms of Tolerate, Invest, Migrate and Eliminate d. Provide platform to create standardize tools, uniform design and techniques are maintained to reduce costs of maintenance e. Coordinating input on risks, costs and opportunities for concepts f. Developing customised applications for the customers aligned with their needs g. Perform design and code reviews thoroughly on regular basis, keeping in mind the security measures h. Understanding design and production procedures and standards to create prototypes and finished products i. Work closely with systems analysts, software developers, data managers and other team members to ensure successful production of application software j. Offer viable solutions for various systems and architectures to different types of businesses k. Seamless integration of new and existing systems to eliminate potential problems and maintain data structure and bring value in terms of development l. Transforming all applications into digital form and implement and evolve around mesh app and service architecture that support new technologies like IOT, blockchain, machine learning, automation, BOTS etc m. Cloud Transformation: (Migration) Understanding non-functional requirements Producing artefacts such as deployment architecture, interface catalogue Identify internal and external dependency, vendor and internal IT management Support build and testing team n. Cloud Transformation: (Modernization) Understanding and Defining target architecture in Integration space Assessing project pipeline / demand and align to target architecture Technical support of delivery team in terms and POC and technical guidance o. Keep Up-to-date with the latest technologies in the market Mandatory Skills: Fullstack Java Enterprise. Experience: 10 YEARS.

Proven ability to architect features using distributed systems & document technical architecture. Expert level exp in building backend services using C# & EF core. Expert level experience building scalable REST APIs, Postgres data stores. Required Candidate profile Highly proficient in React, Javascript or Typescript. Proficient in HTML/CSS & other web technologies. Exp with implementing distributed systems such as SNS and SQS using AWS infrastructure .

Were Hiring: Full Stack Developer (React + Node.js) | Pune | Immediate Joiners Only Were looking for talented Full Stack Developers with a strong command of React and Node.js to join our growing team in Pune. If you're passionate about building scalable, high-performance applications and can join immediately, we’d love to hear from you! Job Title: Full Stack Developer (React + Node.js) Location: Pune (Work from Office) Experience: 3–5 Years No. of Positions: 2 Shift Timing: 9:00 AM – 6:00 PM Type: Full-Time Employment Budget: • 14 LPA for Full-Time Employees • 5000/day for Contractors Notice Period: Immediate Joiners Only Key Responsibilities -Develop and maintain full-stack applications using React and Node.js -Build responsive UIs with reusable components using React hooks, lifecycle methods, and modern principles -Design robust backend services with Node.js, using async/await, Promises, and the event loop -Work with TypeScript to ensure type safety and code scalability -Collaborate with cross-functional teams to deliver features on time -(Bonus) Experience with PDF/report generation is a strong advantage Must-Have Skills -3+ years of experience with React.js -3+ years of experience with Node.js -Proficiency in TypeScript and modern JavaScript -Solid understanding of frontend/backend integration, RESTful APIs, and best practices Interested? DM me or send your CV to anzia.sabreen@bct-consulting.com to apply or learn more. #Hiring#FullStackDeveloper#ReactJS#NodeJS#PuneJobs#ImmediateJoiners#TypeScript#JavaScriptJobs#SoftwareEngineering#TechJobs#WebDevelopment#HiringforFullstackDeveloper#Punejobs#referfriends#refercolleuges#Linkedinconnections#Applynow

Role & responsibilities 1. Strong experience in Java Fullstack development 2. Experience in Angular 3 Experience in Spring,Spring boot,microservices

About Company: Avisoft (https://avisoft.io/) is a Technology and IT services company based in Mohali and Jammu serving clients globally. We offer Product Engineering, IT Consultancy, Project Outsourcing and Staff Augmentation services. We partner with businesses to design and build Tech platforms from scratch, or to re-engineer and modernize their legacy systems. Our teams have expertise in Full Stack Technologies, REST API Servers, Blockchain, DevOps, Cloud Technologies, Data Engineering, and Test Automation. We are building next gen SaaS platforms for e-commerce and health-tech domains. About Role: We are hiring multiple Full Stack Developer experienced in React JS, Node.js. If you are passionate about technology, constantly seeking to learn and improve skill set, then you are the type of person we are looking for! This is a great opportunity for someone who wants to be part of an employee centric and customer obsessed organization, and be part of a team which is driven, passionate and ambitious. We work on latest technologies with immense focus on robust designs and scalable architectures. Role and Responsibilities: Managing the complete software development process from conception to deployment. Maintaining and upgrading the software following deployment. Managing the end-to-end life cycle to produce software and application. Overseeing and guiding the analysing, writing, building, and deployment of software.Overseeing the automated testing and providing feedback to management during the development process.Modifying and testing changes to previously developed programs. Required Skills: 4+ years of experience in developing enterprise-level applications, using Nodejs, ReactJS, Experience with front-end technologies such as HTML5, CSS3, JavaScript and related frameworks/libraries (e.g., Redux, Vue.js). Strong understanding of RESTful APIs and GraphQL. Familiarity with relational and NoSQL databases (e.g., MongoDB, MySQL, PostgreSQL). Experience with version control systems such as Git. Excellent verbal and written communication and collaboration skills to effectively communicate with both business and technical teams. Comfortable working in a fast-paced, result-oriented environment. Experience in handling team members. Skills Required: Nodejs, ReactJS, HTML5, CSS3, JavaScript, AWS Location: Delhi NCR,Bangalore,Chennai,Pune,Kolkata,Ahmedabad,Mumbai,Hyderabad Chennai

Experience : 5 to 10 Years Location : Hyderabad Notice Period : Immediate to 30 Days Skills Required: Java J2EE Spring boot Micro services ReactJS JMS Docker AWS If interested please share your updated resume to arampally@jaggaer.com with below details: Total Years of Experience: Years of Experience in Java, J2EE , Spring boot: Years of experience in ReactJS: Years of Experience in AWS Cloud: Current CTC: Expected CTC: Notice Period:

Position-.net full stack Exp 6 to 10 years Location- Pune, Mumbai, Nagpur, Goa, Noida, Gurgaon, Ahmedabad, Jaipur, Indore, Kolkata, Kochi, Hyderabad, Bangalore, Chennai,) Skill-,Net,azure services,azure function minimum 2 years experience,react

Job Title : Fullstack Developer(Support) Job Location : Pune Work Type : Work from Office Total Experience : 5-8 years Qualification : BE/B.Tech (CS/IT), MSc. (Comp/IT), MCM, MCA Role & responsibilities Responsible for providing excellent client/in-house support in resolving any technical issues reported by the business users and delivering all enhancements as required by business users. Deliver the necessary technical support in web/application development and maintenance. Proactive analysis, validation & fixing of business technical issues. Experience working as a react.js developer with hands-on experience in React JS, Redux, React Native Knowledge of Node.js and REACT tools including React.js, Webpack, Enzyme, Redux, and Flux. • Good understanding of front-end technologies, such as React JS, HTML5, XHTML, XML, and CSS3 Should have worked on Client Server-side scripting languages such as JavaScript, JSP, JQuery and web services development using RESTful implementation. Experience in Agile/ Scrum Process. Usage of Azure DevOps or Jira Interested candidates can share your updated CV on careers@excellonsoft.com

Job Title: Full Stack Developer Experience: Minimum 5Years Location: Bangalore Hybrid (2 days in office Preferred) / Remote Job Description: We are looking for a highly motivated Full Stack Developer with at least 2 years of experience in designing, developing, and maintaining scalable applications. The ideal candidate should have hands-on experience with Java, Spring Boot, React.js, and AWS/GCP cloud platforms. Exposure to Mendix low-code development is a plus. Key Responsibilities: • Develop and maintain end-to-end web applications using Java, Spring Boot, and React.js. • Design, develop, and integrate RESTful APIs and microservices. • Deploy, monitor, and maintain cloud-based applications on AWS/GCP. • Write clean, efficient, and scalable code while following best practices. • Collaborate with cross-functional teams, including designers, developers, and DevOps engineers. • Optimize applications for performance, scalability, and security. • Participate in code reviews and contribute to the continuous improvement of development processes. • (Optional) Work on Mendix low-code development for rapid application delivery. Required Skills: Frontend: React.js, JavaScript/TypeScript, HTML, CSS Backend: Java, Spring Boot, REST APIs, Microservices Database: MySQL, PostgreSQL, MongoDB Cloud: AWS or GCP (Basic deployment and infrastructure knowledge) Version Control: Git, GitHub/GitLab CI/CD: Exposure to Jenkins, Docker, or Kubernetes is a plus Good to Have: Mendix low-code platform experience Qualifications: • Bachelor's degree in Computer Science, Engineering, or a related field. • 2+ years of hands-on experience in full-stack development. • Strong problem-solving skills and the ability to work independently and collaboratively. • Experience with Agile development methodologies.

.net + Angular

Experience in architecting and building applications preferably using Angular and Node.JS. Exposure to Imaging & Dicom Standards and Imaging tools. Experience in analytical tools in Python/R. Experience in building Event Driven Microservices using Kafka. Work with client and Onshore Architects and stakeholders for understanding existing systems and implementation and architecting efficient, fault tolerant services re-design strategy Operationalize and implement coding best practices and code quality processes. Collaborate with Onshore Solution Architect and mentor Team member on technical solutions. Excellent written and verbal comm skills to coordinate with client architects.

Role & responsibilities Experience: 3+ years of professional experience in software development. At least 3-5 years of hands-on experience in React.js /Angular for front-end development, Redux (or other state management libraries), HTML5, CSS3, and JavaScript (ES6+). At least 5 years of experience with .NET Core for back-end development, C#, and building RESTful APIs. Proven experience in leading and managing development teams, including mentoring junior engineers and driving technical direction. Experience working in an Agile environment, ideally with Scrum or Kanban methodologies. Experience with front-end testing (Jest, Enzyme, React Testing Library) and back-end testing (xUnit, NUnit). Experience with CI/CD pipelines and deployment processes, particularly with Azure DevOps, Jenkins, or similar tools. Cloud: Experience with cloud platforms like Microsoft Azure or AWS is a plus. Strong leadership and interpersonal skills, with the ability to motivate and inspire a team. Excellent communication skills, both written and verbal. Problem-solving mindset with a focus on technical excellence and delivering business value. Ability to manage competing priorities and drive projects to completion.

Responsibilities/ Duties Technical Ownership (70%) Lead the design and development of scalable, secure, and high-performance applications using .NET (C#) and MSSQL . Provide technical guidance, architecture reviews, and hands-on mentorship to the engineering team. Maintain high standards of software quality through code reviews and development best practices. Identify and address technical debt, system performance issues, and potential bottlenecks. Stay updated with emerging technologies and recommend improvements in tools and frameworks. Team & Delivery Management (30-40%) Manage, mentor, and grow a team of 10+ engineers across backend, frontend, and database functions. Drive engineering planning, sprint execution, and timely delivery of features in collaboration with Product and QA. Monitor key performance indicators (KPIs) for quality, velocity, and operational efficiency. Foster a culture of accountability, innovation, and continuous learning. Coordinate with cross-functional stakeholders to translate business needs into technical solutions. Required Skills & Experience 10+ years of software engineering experience, with deep expertise in .NET (C#) and MSSQL . At least 3-4 years in a managerial or leadership role leading 10+ engineers. Strong background in Logistics , Supply Chain , or SaaS product development. Experience in delivering enterprise-grade platforms with focus on reliability, performance, and security. Proven track record in technical decision-making, delivery management, and cross-functional collaboration. Nice to Have: Familiarity with web technologies like Angular, React. Exposure to cloud platforms (Azure, AWS) and CI/CD pipelines . Experience with additional databases (PostgreSQL, MongoDB, etc.). Agile/Scrum experience and understanding of DevOps principles. Criteria for the Role! 10+ years in software development with deep expertise in .NET (C#) and MSSQL. Experience with scalable, secure, high-performance application architecture. Familiarity with cloud (Azure/AWS), CI/CD, and web tech (Angular/React). Understanding of DevOps and Agile practices. Knowledge of multiple databases (e.g., PostgreSQL, MongoDB). 34+ years managing engineering teams (10+ engineers). Ability to mentor, conduct code reviews, and lead engineering practices. Experience driving sprints, collaborating with Product/QA, timely delivery. Delivery of enterprise-grade platforms with focus on performance/reliability. Domain Knowledge Experience in Logistics, Supply Chain, or SaaS product development Strong communication, cross-functional collaboration, and accountability. Culture-building, innovation encouragement, and continuous learning mindset. Competency Expert-level proficiency in .NET (C#) and MSSQL Advanced understanding of system architecture Enforce code quality through advanced code review practices Intermediate-level experience with CI/CD, DevOps practices, and cloud platforms (Azure/AWS) Nice to have for full-stack understanding Basic to intermediate knowledge of frontend technologies like Angular or React Advanced team leadership capabilities Advanced proficiency in delivery management Strong cross-functional collaboration skills Monitor and act upon key performance indicators (KPIs) Advanced problem-solving skills Exceptional communication abilities Accountability and ownership Intermediate to advanced orientation toward innovation and continuous learning Strategic thinking at an intermediate level

Work Location: Bangalore / Chennai Experience : 5-9yrs Skills Required: Hands on experience in Java8 Experience in Springboot / Microservices Experience in cloud technologies Experience in Angular Please share your updated profile to suganya@spstaffing.in, if you are actively looking for job change.

Java, Springboot, Spring boot, Microservices, Micro service, Rest API, Angular 8+ Version

Lead Full Stack Developer Job Description Developer Responsibilities Work within an agile team to rapidly deliver software against a highly available application Good team player working with multiple contributing developers of varying seniority Collaborate with other developers on technical approaches and problem solving Ability to write clean and efficient code Develop tasks from functional designs and user stories Estimate user stories and tasks Build and deliver solutions based on written specifications Refactor existing code to meet current standards and patterns Identify and thoroughly document development patterns specific to the application Developer Requirements: 8+ years of experience in .NET along with a minimum of 2 years experience with TypeScript and React framework. Experience in at least one RDBMS, preferably SQL Server Experience with REST API(s), Windows Server, IIS and version control An understanding of software patterns and practices, affinity for developing unit tests with complete code coverage Design, build and maintain efficient and reusable code Proven experience delivering end to end software artifacts within a large code base Excellent troubleshooting and debugging skills Bonus: Experience with MVC and other design patterns Experience with Tailwind Experience with Web Components Experience with React testing including automated testing (eg. via Jest, Mocha)

Warm Greetings !!! Opening in one of the top MNC Companies - Genpact - Permanent Role !!! ----------------------------------------------------------------------- SKILLS : Java, Spring Boot and Microservices with Angular 13 or above version Experience ( Exp in Cloud is an added advantage ) ----------------------------------------------------------------------- Face to Face Interview Location : Bangalore ( 23rd Aug 2025 - SATURDAY ) Interview Process : 2 Technical Round and 1 Managerial Round on 23rd Aug 2025 ( SATURDAY ) EXPERIENCE : 5 to 10 Years MANDATORY ---------------------------------------------------------------------------------- If interested please fill the following and share your updated resume to dhanaraj@pan-asia.in : Name : Experience : Experience in Java : Experience in Spring Booot and Microservices : Experience in Angular ( With Version ) : Current CTC : Expected CTC : Notice Period : How soon you can join : Face to Face Availability on 23rd Aug Saturday in Bangalore : Current location : ---------------------------------------------------------------------------------- NOTE : ALL THE ROUNDS WILL COMPLETED ON THE SAME DAY ( SATURDAY 23rd AUG ) REFER FRIENDS ALSO TO : dhanaraj@pan-asia.in If anyone from other locations can come for face to face to Bangalore on Saturday 23rd Aug can also Apply ------------------------------------------------------------------------------

Responsibilities Experience with Spring Boot Experience with Microservices development Extensive Experience working with JAVA Rest API. Extensive experience in Java 8-17 SE Experience with unit testing frameworks Junit or Mockito Experience with Maven/Gradle Experience in Angular 16+ & Rxjs. NgRx is mandatory along with experience with unit testing using Jest/Jasmine Professional, precise communication skills Experience in API designing, troubleshooting, and tuning for performance Professional, precise communication skills Experience in designing, troubleshooting, API Java services and microservices Experience in any CI/CD tool. Experience in Apache Kafka will be added advantage. Qualifications we seek in you! Minimum Qualifications BE /B.Tech/M.Tech/MCA Excellent Communication Skills Good Team Player Preferred qualifications Experience with Spring Boot Experience with Microservices development Extensive Experience working with JAVA Rest API. Extensive experience in Java 8-17 SE Experience with unit testing frameworks Junit or Mockito Experience with Maven/Gradle Experience in Angular 13+ & Rxjs. Ngrx will be an added advantage

Role & responsibilities Job Description The Role : The position shall manage the group of developers technically in Dublin, to develop one or more high quality eCommerce products (Microsoft based tech stack) and related mobile application for the Primary Eurofins eCommerce Portal. Product is developed in coordination with the India & Europe Team. Responsibilities : The role has ultimate responsibility for the assigned project(s) and manages all aspects of delivery including definition, planning, monitoring, customer satisfaction and others aspects of an agile product development. This role is more of a hands-on Development Manager who will have the total accountability and responsibility for delivering with highest quality (minimum defect leakage and density) and within the said cost/time. Some of the responsibilities are listed below; however, these are not the exhaustive set of responsibilities. Deliver high quality shippable product as per the scope of the program. Should ensure that the quality is measured, monitored and improved with every release. Manage team of Developers technically and ensure that all best practices of software engineering is implemented. Oversee planning, daily stand-up meetings, reviews, retrospectives, sprint and release planning, demos and other agile project related meetings. Ensure the development teams are practicing the core agile principles of collaboration, prioritization, team accountability, and visibility. Establish clear ownership for project tasks, ensure that team members have the tools needed, and provide timely feedback. Report (or contribute in preparing the status report) to Sr. management Assess project issues and identify solutions to meet productivity, quality and customer. REQUIRED EXPERIENCE AND SKILLS: Experience: Overall 3-5 years in experience in IT Application/Software Development field. Good and hands-on knowledge of Agile adoption (concept of delivering MVP) is mandatory. Good to have handled at least 2 eCOM or e-Portal development projects including its deployment and maintenance. Additional knowledge of delivering multi-platform mobile apps is an advantage. Good to have working experience in US, UK or Europe for atleast 2 years (should have stayed onsite for extended period). Highly assertive and ability to drive the onsite teams to seek information or clarification. Self-Managed and highly independent. Healthcare or life science domain will be highly preferred. Technology skills: Strong and proven background in Information Technology. Strong working knowledge of .NET, C#, ASP.NET MVC, Web Services, WCF Rest and Web API Working experience of Angular, JavaScript, HTML 5 and CSS 3, Bootstrap technologies Working knowledge of MS SQL Databases Working knowledge of ESB or Message Queuing (MSMQ). Microservices is an added advantage. Methodology skills AGILE, TDD, UML Qualifications BE Computer Science/MCA or any other Bachelor’s degree with the right experience

Warm welcome from SP Staffing Services! Reaching out to you regarding permanent opportunity!! Job Description: Location: Bangalore Exp: 5-8 yrs Skill: Lead Fullstack Consultant Desired Skills Strong experience with popular development frameworks such as SpringBoot, React, Angular, Ember. JS with excellent Java, JavaScript, HTML5 and CSS development skills Strong experience with Microservices based System design & deployment. Strong Experience building high performance and scalable web services Experience with React and related technologies, such as Redux or GraphQL Experience with modern front-end build pipelines and tools such as Babel, Webpack, NPM, etc. Solid understanding of MVC and stateless APIs & building RESTful APIs A strong sense of ownership for the end product and your work Passionate about writing high quality and well-architected code. Experience with one or more NoSQL databases such as DynamoDB or Redis Experience with MySQL or other relational database systems Experience with version control concepts and Git Experience with AWS and AWS Infrastructure, Platform and Services Experience and comfort building cloud-native applications Familiarity with code versioning tools such as Git Strong problem-solving and analytical skills Excellent communication, Presentation, and collaboration skills Education Qualificaiton : Bachelor's or Master's degree in Computer Science, Engineering, or a related field Interested If Interested, please share your resume to sangeetha.spstaffing@gmail.com with the below inline details. Full Name as per PAN: Mobile No: Alt No/ Whatsapp No: Total Exp: Relevant Exp in Microservices: Rel Exp in React JS: Rel Exp in Springboot: Current CTC: Expected CTC: Notice Period (Official): Notice Period (Negotiable)/Reason: Date of Birth: PAN number: Reason for Job Change: Offer in Pipeline (Current Status): Any gaps in education/career: If having gaps, how many months/year: Availability for F2F interview on weekdays between 10 AM- 4 PM(plz mention time): Current Res Location: Preferred Job Location:

Your Role As the Founding Tech Member , you will: Own and build the end-to-end product backend + AI stack Build fast, ship fast, iterate even faster Work closely with the founding team to shape product vision & architecture Architect scalable AI workflows and APIs that connect with Revit What Were Looking For 4 to10 years of experience in full-stack development in a Startup Proven experience with LLMs, embeddings, vector DBs, RAG pipelines , or recommender systems Strong grasp of JavaScript/Python Bonus: Experience with CAD/BIM tools like Revit, Rhino, AutoCAD, or working with Autodesk APIs Youve worked in a fast-paced startup, or want to build one now

8+ yrs of exp in fullstack development, with strong expertise in Node.js & one or more front-end frameworks (React, Angular, or Vue). Strong understanding of web development concepts (HTML5, CSS3, JavaScript/TypeScript). Required Candidate profile RESTful APIs & microservices architecture. Exp of databases (SQL, NoSQL) & ORM technologies. Exp with version control tools like Git. Familiarity with cloud platforms (AWS, Azure) & CI/CD pipelines.

8+ yrs of exp in fullstack development, with strong expertise in Node.js & one or more front-end frameworks (React, Angular, or Vue). Strong understanding of web development concepts (HTML5, CSS3, JavaScript/TypeScript). Required Candidate profile RESTful APIs & microservices architecture. Exp of databases (SQL, NoSQL) & ORM technologies. Exp with version control tools like Git. Familiarity with cloud platforms (AWS, Azure) & CI/CD pipelines.

Proven expertise in full-stack development using: Backend technologies: Python Django, Node.js, Frontend frameworks technologies, REST API design & implementation. Strong version control skills with Git, advanced Git-flow workflows & PostgreSQL Required Candidate profile Advanced knowledge of web application architecture Comprehensive understanding of software engineering principles & design patterns Expertise in test-driven development (TDD), Jest

Proven expertise in full-stack development using: Backend technologies: Python Django, Node.js, Frontend frameworks technologies, REST API design & implementation. Strong version control skills with Git, advanced Git-flow workflows & PostgreSQL Required Candidate profile Advanced knowledge of web application architecture Comprehensive understanding of software engineering principles & design patterns Expertise in test-driven development (TDD), Jest