About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications — all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion. VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion — both organically and inorganically. We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership — with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup. As a Lead JavaScript Engineer , you will be required to work on various JavaScript libraries that are served on our customers’ websites thereby impacting millions of users. These libraries are the core of all the features of VWO. We love vanilla JavaScript and work with cutting-edge technologies like TypeScript, Rollup.js, Cypress, ESLint. We are obsessed with Web Performance. See some of the improvements that we did https://engineering.wingify.com/posts/performance-improvements-in-vwo-smart-code/ Job Responsibilities: Development of Core JavaScript libraries. Writing reusable code or modules that can be used across all the JavaScript libraries. Talking about your work - we love open source software, we heavily use them, and talking about how we use them is the least we can do to help the community. See our engineering blog and our GitHub page Skills & Experience:- 6-8 Years of Experience Passion for writing Vanilla JavaScript Strong knowledge and experience in JavaScript, HTML, CSS. Work Experience with TypeScript Deep understanding of the DOM, Browser Events, JavaScript APIs, Canvas rendering, etc. Deep understanding of how the browsers work. Regard for optimizations that focus to deliver content to the user as quickly as possible. Awesome Debugging Skills. Passion to write automated tests to verify the working of libraries (You can’t possibly verify things on all devices and on all browsers manually). We use Cypress for this. Understanding the similarities and differences across browsers (young and old). Experience in writing modular JavaScript code Knowledge of high-level programming concepts like promises, data-binding. Passion to stay up to date with the constantly evolving world of front-end development. Show more Show less

About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications — all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion. VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion — both organically and inorganically. We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership — with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup. Job Description: As a Senior Engineer - QA , you will be working on our Product VWO (https://vwo.com), all our products which include our customer-facing application, JavaScript library, and Mobile SDK. We work iteratively and ship code often, and are looking for people who can constantly monitor the state of our application from a quality perspective. You will be responsible for ensuring the high quality of our products that are used by over 2500+ customers across 90+ countries. Your responsibilities: Ensure that our products are awesome and of high quality. Confirm, verify bugs, and determine steps to reproduce. Design and implementation of internal automation tools for QA. Building front end, UI, API, load, performance, and UAT test suites for our applications. Work closely with Product, Marketing, and Development Teams on projects to understand requirements and create, automate, execute, manage, and report test plans, test cases, and test reports. Own QA activities for the scrum team and drive scoping, planning, executing, monitoring & controlling test activities. Be the first point of contact for all client issues, debug them, and get them resolved in time for a better customer experience. Understand deployment scenarios and manage deployment to test environments. Drive the adoption of best practices in testing and maintainability with the organization. Talking about your work - we love open source software, and heavily use them, and talking about how we use them is the least we can do to help the community. See our engineering blog. Requirements: Min 3 to 6 yrs years of experience in manual and automation testing. Analytical ability to understand and work with complex application architecture. Well-versed in Functional Automation - Web/Mobile and API. Knowledge of API testing and automation with Rest Assured. Proficient in any of the following Automation Tools - Selenium / Protractor. Experience in Performance/load testing with tools like Jmeter is a bonus. Knowledge of GenAI Applications and hands-on experience in its usage will be considered a major advantage In-depth knowledge of programming languages: Java and JavaScript. Hands-on knowledge of testing backend platforms - Databases, Cache, and Queues. Knowledge in client-side debugging for RCA of bugs. Experience in creating and maintaining QA infra - Selenium Grid and Docker. Experience in Version control tools like Git. And CI tools like Jenkins are required. Keen inclination towards usability and end-user perspective of the application we build. Own QA Processes in scrums. Estimate and plan projects with accuracy. Contribution to open-source projects related to QA is a strong plus. Works independently under minimal direction with strong work ethics. Location : Remote (Wingify is a remote-first company) Show more Show less

About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion. VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion both organically and inorganically. We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup. We are looking for a highly skilled and dependable Senior Executive Assistant to the CEO who can serve as an essential right-hand in a high-growth, fast-moving software company (~500 people). You will act as a force multiplier, enabling the CEO to focus on strategy, growth, and leadership by ensuring seamless management of priorities, meetings, and day-to-day operational flow. This role requires an individual who is organized, insightful, tech-savvy, and capable of handling sensitive information with complete confidentiality. What You’ll Do: Calendar & Schedule Management : Manage the CEO’s calendar, schedule meetings, and ensure strategic use of time. Anticipate conflicts and proactively resolve them. Administrative Support : Handle core administrative functions including email management, documentation, expense reporting, file organization, and office coordination. Travel Management : Plan and manage complex domestic and international travel itineraries including flights, accommodations, visas, and on-ground logistics—to ensure a seamless experience. Meeting Management : Own preparation and follow-ups for meetings, ensuring alignment and accountability across stakeholders. Project Coordination & Follow-ups : Track and follow up on critical projects across departments. Drive accountability and ensure timelines are met. Presentation & Document Preparation : Create well-structured decks, reports, and memos tailored for both internal and external audiences. Communication Support : Draft high-quality emails, updates, and announcements on behalf of the CEO. Research & Briefings : Conduct market, competitor, or topic-specific research and prepare executive summaries and briefing documents. Task & Workflow Management : Use tools like ClickUp, Notion, or Trello to manage priorities and workflows. Familiarity with such platforms is strongly preferred. Relationship Management : Act as a key liaison for partners, investors, and clients when needed. Ensure all interactions are timely, thoughtful, and professional. Event Coordination : Support end-to-end planning and execution of internal leadership offsites, client dinners, and investor meetings. Operational Support : Tackle recurring operational tasks and proactively assist the CEO in improving efficiency and clarity across the board. What We’re Looking For: 3–5 years of experience as an Executive Assistant, preferably in a startup, tech, or SaaS environment. Expertise in Google Workspace, especially Calendar, Docs, Slides, and Sheets. Exceptional organization, time management, and attention to detail. A dependable, discreet, and trustworthy presence. You are someone people rely on. A strong sense of ownership and urgency, you take initiative and don’t wait to be told. Confidence in handling complex travel and executive logistics independently. Clear and professional communication skills, both verbal and written. Strong interpersonal abilities and the capacity to build rapport at all levels. The ability to stay calm and composed under pressure in high-stakes environments. High emotional intelligence and awareness of how to navigate personalities and shifting priorities. A proactive mindset you spot problems early and take initiative to solve them. Reporting To You will work directly with: Sparsh Gupta – CEO (Linkedin|Twitter) Sparsh is a Masters in Computer Science from Oxford University where his major was Artificial Intelligence. He has tremendous engineering experience and knowledge under his belt. He enjoys designing and implementing large-scale systems (such as VWO). His parallel interests are in user interface design. Location: While this is primarily a remote role, occasional in-person coordination may be required in Gurgaon, where the CEO is based. Candidates located in Gurgaon for such needs will be preferred. Kindly complete the application form thoroughly; your responses will be a primary factor in our shortlisting process.

About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion. VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion both organically and inorganically. We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup. About the Role As a Senior Backend Developer at Wingify , you’ll take ownership of high-performance backend systems that power applications used by millions. You will work on scalable infrastructure, develop APIs, and collaborate across teams to bring features to life. While the core of this role is strong backend engineering, we also welcome developers with an interest or exposure to AI/GenAI systems as we continue evolving our products with intelligent capabilities. Key Responsibilities End-to-End Development : Design, develop, deploy, and maintain microservices and backend applications. Scalable Architecture : Build reliable systems that handle scale, performance, and resilience. Product-Driven Engineering : Collaborate with product managers to understand user needs and deliver backend solutions that directly impact the business. API Design : Create clean, well-documented RESTful APIs for frontend and platform integrations. Cross-Team Collaboration : Work closely with product managers, frontend developers, and DevOps teams. Mentorship & Knowledge Sharing : Support junior engineers and contribute to a culture of learning through talks, blogs, or documentation. What We’re Looking For Core Qualifications Minimum 3 to 5 years of backend development experience. Proficiency in at least two of the following: PHP, Node.js, Python, or Java . Experience with RESTful API development and distributed system design. Strong command of relational databases (e.g., MySQL, PostgreSQL) and familiarity with NoSQL solutions like MongoDB. Experience working in cloud environments such as AWS or GCP. Comfort with Docker and Kubernetes in production setups. Bonus Skills (Nice to Have) Exposure to AI/ML tools or integration of AI APIs (e.g., OpenAI, Hugging Face, Google AI). Experience integrating LLMs , basic prompt design, or building features powered by Generative AI . Familiarity with concepts like model inference , vector databases , or AI pipelines . Why Join Wingify? At Wingify, we build innovative, user-centric SaaS products that empower businesses to optimize digital experiences. As part of a product-led, engineering-driven culture, you’ll work on problems that directly impact thousands of global customers. We encourage ownership, autonomy, and continuous learning, and provide the freedom to explore areas like AI and intelligent automation as our products evolve. If you're a backend engineer who enjoys building scalable systems—and you're curious about how AI might shape the future—we’d love to hear from you. Job Location: Fully Remote (INDIA)

About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications — all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion. VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion, both organically and inorganically. We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership, with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup. We are seeking a Principal Data Architect to lead our Data Platforms Team and drive innovation in data engineering, analytics, and governance. Role Overview: As a Principal Data Architect, you will be responsible for leading the design, development, and scaling of our data infrastructure. You will collaborate with product managers, data scientists, and engineers to ensure our data pipelines and architectures are robust, scalable, and aligned with business objectives. The role requires a strong background in backend development, data processing, and scalable architecture design. Key Responsibilities: ● Lead and mentor a team of data engineers, ensuring high performance and career growth. ● Architect and optimize scalable data infrastructure, ensuring high availability and reliability. ● Drive the development and implementation of data governance frameworks and best practices. ● Work closely with cross-functional teams to define and execute a data roadmap. ● Optimize data processing workflows for performance and cost efficiency. ● Ensure data security, compliance, and quality across all data platforms. ● Foster a culture of innovation and technical excellence within the data team. Required Skills & Experience: ● 10+ years of experience in data engineering, with at least 3+ years in a leadership role. ● Expertise in backend development with programming languages such as Java, PHP, Python, Node.JS, GoLang, JavaScript, HTML, and CSS. ● Proficiency in SQL, Python, and Scala for data processing and analytics. ● Strong understanding of cloud platforms (AWS, GCP, or Azure) and their data services. ● Strong foundation and expertise in HLD and LLD, as well as design patterns, preferably using Spring Boot or Google Guice ● Experience in big data technologies such as Spark, Hadoop, Kafka, and distributed computing frameworks. ● Hands-on experience with data warehousing solutions such as Snowflake, Redshift, or BigQuery ● Deep knowledge of data governance, security, and compliance (GDPR, SOC2, etc.). ● Experience in NoSQL databases like Redis, Cassandra, MongoDB, and TiDB. ● Familiarity with automation and DevOps tools like Jenkins, Ansible, Docker, Kubernetes, Chef, Grafana, and ELK. ● Proven ability to drive technical strategy and align it with business objectives. ● Strong leadership, communication, and stakeholder management skills. Preferred Qualifications : ● Experience in machine learning infrastructure or MLOps is a plus. ● Exposure to real-time data processing and analytics. ● Interest in data structures, algorithm analysis and design, multicore programming, and scalable architecture. ● Prior experience in a SaaS or high-growth tech company. Why Join Wingify? ● Work on cutting-edge data technologies and large-scale distributed systems. ● A remote-friendly work environment with flexible working hours. ● A culture of innovation, learning, and open communication. ● Competitive compensation, benefits, and growth opportunities. Join us in shaping the future of data-driven decision-making at Wingify!

About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. About the Role: We are seeking a proactive and customer-centric Technical Support Engineer to join our team. In this role, you will be the dedicated technical point of contact for assigned customers, ensuring all their queries and issues related to the product are addressed promptly. You will leverage your technical expertise and customer service skills to build strong relationships, resolve complex issues, and drive product adoption. This role requires a strong understanding of web technologies and a passion for delivering exceptional customer experiences Responsibilities Serve as the primary technical contact for assigned customers, building and maintaining strong relationships Provide expert technical support via emai l, cha t, and phon e, addressing complex customer inquiries and troubleshooting technical challenges within the defined SLAs Collaborate with Development, QA, and Product Management teams to resolve customer issues and provide feedback for product improvements Log and track software defects using our bug tracking system (e.g., Jira), ensuring timely resolution Collaborate with the Sales and Customer Success teams to ensure seamless customer onboarding and ongoing support Professional Competencies: Strong understanding of web applications , HTML, JavaScript, CSS, and jQuery (mandatory) Proven experience in supporting enterprise customers and managing technical accounts Excellent communication, interpersonal, and problem-solving skills Ability to analyze logs and diagnose complex technical issue Proactive, results-oriented, and able to manage multiple priorities Experience with bug tracking systems (e.g., Jira) and CRM tools (e.g., Salesforce). Desired Skills & Experience: 2-6 years of experience in a technical account management or customer support role Bachelor’s degree in Computer Science or a related field Strong understanding of web technologies and SaaS products Excellent written and verbal communication skills Experience working with remote teams Job Locat ion: Fully Remote 5 AM to 1 PM IST - APAC Shift Why Wingify : Work from anywhere in India with our remote-first culture Competitive compensation and comprehensive health insurance for you and your dependents. Opportunities for professional growth and development within a dynamic SaaS company Work with dedicated customers and build long-lasting relationships. Contribute to a globally recognized product, VWO. Join us at Wingify and help shape the future of experience optimization!

About VWO VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences. Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications — all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion. VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion — both organically and inorganically. We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership — with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup. Wingify is a product-led tech company on a mission to build intelligent, performance-driven solutions at the forefront of digital experience and AI innovation. We believe in ownership over execution, curiosity over credentials, and building systems that push boundaries in how software interacts with intelligence. We're looking for a Lead Full Stack Engineer who thrives at the intersection of end-to-end engineering and GenAI innovation. If you’re passionate about building both systems and products that harness AI meaningfully—this is the role for you. 🧩 What You’ll Do Architect, design, and deliver scalable full-stack features and systems end-to-end—across backend services, APIs, and frontend interfaces. Build AI-integrated systems (e.g., NLP automation, GenAI assistants, recommendation engines) using LLMs and GenAI APIs in production environments. Mentor and lead a high-performance team of engineers, establishing best practices in architecture, testing, and DevOps. Own performance, maintainability, and scalability across your projects and ensure long-term code health. Collaborate cross-functionally with Product, Design, and Data teams to align on product direction and technical strategy. Stay hands-on with code , lead architectural decisions, and contribute to critical reviews and deployments. 🛠️ Must-Have Skills 6–10 years of experience in full-stack development roles with a product-focused mindset. Strong proficiency in two or more backend languages : PHP, Node.js, Golang, Python, Java. Expert in JavaScript/TypeScript with deep knowledge of modern frameworks— React or Angular preferred. Demonstrated experience integrating GenAI APIs (OpenAI, Langflow, custom GPT agents) in real-world applications. Strong understanding of software architecture , system design , and microservices . Solid DevOps exposure: Docker , Kubernetes , CI/CD pipelines (e.g., Jenkins). Proficient in SQL and NoSQL databases. In-depth knowledge of browser internals , rendering optimization, and frontend performance strategies. Experience with TDD , code quality enforcement, and unit test coverage. 🎯 Bonus Points Led a team through an AI-first product transformation . Contributed to open-source AI/ML tools or active in AI/engineering communities. Experience with Langflow , vector databases (e.g., Pinecone, Weaviate), or custom GPT integrations . 🌍 Why Join Us Build software that blends product and intelligence . Work in a culture where engineers shape product direction . Experiment with bleeding-edge AI and GenAI tech . Join a team that prioritizes impact, autonomy, and growth .