Senior Software Developer

Greetings from Gainserv! At Gainserv Infotech Pvt Ltd, we are a USA-based product development company dedicated to revolutionizing user onboarding experiences through innovative cloud software solutions catered towards businesses. Our goal is to simplify processes, enhance engagement, and accelerate software adoption without the need for any coding skills. We are committed to utilizing innovation to make every user's initial interaction with software seamless and impactful. To learn more about us, visit www.gainserv.com. We are currently seeking a highly skilled PERN Stack Developer / System Architect with expertise in building scalable SaaS applications. The ideal candidate should possess a strong background in Node.js, PostgreSQL, React.js, Redis, ELK Stack, and Python. In this role, you will be responsible for designing system architecture, developing both backend and frontend features, and ensuring performance, security, and scalability. Key Responsibilities: System Architecture & Design: - Design and implement scalable, secure, and high-availability system architectures. - Define data models, APIs, and integration patterns between services. - Set up logging, monitoring, and alerting pipelines using the ELK stack. Backend Development (Node.js / Express): - Develop and maintain RESTful / GraphQL APIs. - Implement authentication, authorization, caching, and background job queues. - Optimize queries and implement caching with Redis for high performance. Frontend Development (React.js): - Build dynamic, responsive, and reusable UI components. - Integrate backend APIs into frontend apps. - Implement state management using Redux or modern React hooks. Database (PostgreSQL): - Design normalized schemas, write efficient queries, and create stored procedures. - Implement database migrations and backup strategies. Data Engineering / Python: - Write Python scripts for data processing, ETL pipelines, and ML/AI integration. - Work with survey data, analytics pipelines, and automation tasks. DevOps & Monitoring: - Implement CI/CD pipelines (GitHub Actions, Jenkins, or similar). - Manage deployments on Docker / Kubernetes / Cloud (AWS/Azure/GCP). - Ensure system observability with Elasticsearch, Logstash, and Kibana. Required Skills: - Strong expertise in Node.js / Express.js and React.js. - Hands-on experience with PostgreSQL (schemas, functions, optimization). - Proficiency with Redis for caching and pub/sub messaging. - Deep understanding of ELK stack (Elasticsearch, Logstash, Kibana) for monitoring and analytics. - Solid Python programming skills (for data processing, AI/ML, or scripting). - Experience with microservices architecture and system design. - Strong understanding of REST APIs, WebSockets, and real-time systems. - Experience with Docker, Kubernetes, and CI/CD pipelines. - Knowledge of cloud infrastructure (AWS/Azure/GCP). Nice to Have: - Experience with Kafka, RabbitMQ, or other message brokers. - Background in AI/ML integration (sentiment analysis, recommendations, automation). - Knowledge of security best practices (OAuth2, JWT, encryption, etc.). - Prior work on multi-tenant SaaS platforms. Qualifications: - Bachelors/Masters in Computer Science, Engineering, or related field. - 4-8 years of experience as a Full-Stack Developer / Architect. - Proven track record of designing and delivering scalable enterprise applications. Benefits: - Competitive salary - Flexible work environment - Learning & development opportunities - Chance to grow with a fast-scaling SaaS business - 29 Annual Leaves - 1st and 3rd Saturday off & Other Saturday Half - Leave Encasement - Employee Engagement Activities - Company-Sponsored Certification Courses If you are interested in this opportunity, please share your updated resume at hr@gainserv.com.,