Full Stack Software Development Engineer II

Sigmoid Data Engineering; Bengaluru; On-site; INR 2,400,000 - 4,000,000; Full time

Job summary

Sigmoid Data Engineering is seeking a Full Stack Software Development Engineer II (SDE II) in Bangalore, India. You will own building scalable web applications, with strong frontend using React and TypeScript, and robust backend services via Node.js or FastAPI.

You will design APIs, ensure code quality, and work within an agile team to deliver features end-to-end. The role emphasizes collaboration with product, design, and system architects, mentoring peers, and maintaining high test coverage.

Qualifications

• 3-5 years of hands-on frontend with React, TypeScript, Tailwind CSS, and modern UI libraries.
• Experience with state management and data-fetching libraries (TanStack Query, Zustand, Redux Toolkit).
• Strong server-side development with Node.js or Python (FastAPI).
• Experience with ORMs or query builders (Prisma, Drizzle, TypeORM, SQLAlchemy).
• Relational DB modeling, indexing, and PostgreSQL expertise.
• Knowledge of SOLID principles and design patterns.
• API design, authentication/authorization (OIDC, OAuth 2.0).
• Testing proficiency: Jest, React Testing Library, PyTest.
• Agile/Scrum methodologies.
• Analytical, data-driven, and strong communication.

Responsibilities

• Full stack development of scalable web interfaces and backend services.
• Design and optimize PostgreSQL data models and RESTful APIs/microservices.
• Apply SOLID and clean architecture to deliver maintainable code.
• Create comprehensive test suites to ensure high coverage and reliability.
• Participate in Agile ceremonies and deliver incremental value.
• Mentor junior engineers through code reviews and guidance.

Skills

Frontend React

TypeScript

Tailwind CSS

Shadcn UI

API Development

Node.js

Python (FastAPI)

PostgreSQL

ORMs & Data Layer

SOLID & Design Patterns

Testing (Jest, RTL, PyTest)

Agile/Scrum

Mentorship

Communication

Tools

Docker

Kubernetes

CI/CD

GraphQL

Kafka/RabbitMQ

Job description

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.