# Full Stack Software Development Engineer II

- Link: https://100xfounder.com/job/sigmoid-full-stack-software-development-engineer-ii-d5a337/
- Published: 2026-08-24T19:22:57+05:30
- Author: Ishaan Vardhan

### 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._