Full Stack Software Development Engineer II

Job Title: Full Stack Software Development Engineer II (SDE II) Team: Product Engineering Location: Bangalore, India Employment Type: Full-time About the Role As a Full Stack SDE II in Sigmoid's Product Engineering team, you will take ownership of building scalable, reliable, and user-centric web applications. You will collaborate closely with product managers, designers, and system architects to drive features from design to deployment, ensuring robust frontend performance, clean backend services, and efficient database architectures. Key Responsibilities Full Stack Development Design and build responsive, high-performance web interfaces using React, TypeScript, Tailwind CSS, and Shadcn UI, backed by reliable API services using Node.js or Python (FastAPI). Database & API Design Model, query, and optimize relational data structures in PostgreSQL. Design, build, and maintain clean RESTful APIs and microservices. Code Quality & Best Practices Apply SOLID principles, basic design patterns, and clean code principles to write maintainable, scalable, and self-documenting code. Testing & Quality Assurance Implement comprehensive test suites using Jest, React Testing Library, or backend testing frameworks (e.g., PyTest) to maintain high code coverage and prevent regressions. Agile Execution Actively participate in Agile ceremonies (sprints, stand-ups, retrospectives, and planning) to deliver quality code incrementally. Collaboration & Mentorship Partner with cross-functional teams and mentor junior engineers through constructive code reviews and technical guidance. Requirements & Qualifications Technical Skills Frontend 3–5 years of hands-on experience with React, TypeScript, Tailwind CSS, and modern UI component libraries like Shadcn UI. State & Data Fetching Experience with modern client-side state management and data-fetching libraries (TanStack Query, Zustand, or Redux Toolkit). Backend Strong expertise in server-side development using Node.js or Python (FastAPI). ORMs & Data Layer Experience with ORMs or Query Builders such as Prisma, Drizzle, TypeORM, or SQLAlchemy. Database Strong expertise in relational database modeling, query optimization, indexing, and management with PostgreSQL. System Design & Patterns Practical experience applying SOLID principles, basic software design patterns (Factory, Singleton, Observer, etc.), and clean architecture principles. API Development Solid grasp of API design standards, authentication/authorization using OIDC and OAuth 2.0, and backend-frontend integration. Testing Proficiency in unit, integration, and component testing using Jest, React Testing Library, and PyTest. Methodologies Strong operational knowledge of Agile/Scrum software development workflows. Culture & Mindset Analytical & Data-Driven Problem-solver who relies on metrics, root-cause analysis, and objective evidence to make sound technical and design choices. Entrepreneurial & Agile Thrives in a fast-paced, high-growth environment, displaying high ownership, adaptability, and resilience. Leader & Doer Balanced builder who can lead initiatives and mentor peers while remaining deeply hands-on in code implementation and debugging. Communication Exceptional written and verbal communication skills to articulate technical concepts, align with stakeholders, and author quality documentation. Nice to Have Database & Caching Experience with caching strategies using Redis, or exposure to NoSQL databases (e.g., MongoDB). Architecture & APIs Exposure to GraphQL, microservices architecture, and event-driven patterns (e.g., Kafka, RabbitMQ). Cloud & DevOps Hands-on experience with containerization (Docker, Kubernetes), CI/CD pipelines, and cloud infrastructure (AWS, GCP, or Azure). Security & Performance Understanding of web security best practices (OWASP Top 10, OAuth2, JWT) and web performance optimization techniques. Note: By submitting your application, you consent to being contacted by our Talent Acquisition team via phone call, email, SMS, WhatsApp, or other communication channels regarding your application and relevant career opportunities.