Sigmoid
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Information Technology Support Services · 1001 to 5000 Employees · San Francisco, US
Sigmoid combines data engineering and AI consulting to help enterprises gain competitive advantage through effective data-driven decision-making. Some of the world's largest data producers are engaging with Sigmoid to solve complex business problems. Sigmoid's data professionals provide deep expertise in data engineering, cloud, machine learning, generative AI, and DataOps. Our Leadership: Lokesh Anand (CEO & Co-Founder) : Leads business growth strategy with day-to-day financial and operational management Mayur Rustagi (CTO & Co-Founder) : Digitally transforms enterprises by building modern data architectures that deliver business value. Rahul Kumar Singh (CAO & Co-Founder) : At the forefront of building innovative D&A strategies and large-scale digital transformation journeys. Recent Awards and Recognition: * "Recognized for the 2nd consecutive year as 'India Future Unicorn Award' by Hurun India 2024" * "Identified as a Rising Star in the 'Advanced Analytics and AI Services 2024 ISG Provider Lens™ Study' - U.S." * "Major Contender" and "Star Performer" in the Everest Group's PEAK Matrix Report Analytics and AI Specialists Services (2024) * "Sigmoid identified as a Rising Star in the 'Generative AI Services 2024 ISG Provider Lens™ Study' " * Deloitte's Technology Fast 500 Award for Fastest Growing companies in N.America (4x winner, 2020-2023) * Inc. 5000 Award for America’s Fastest-Growing Private Companies (3x winner, 2021-2023)
Hiring: Engineering
What employees say
+ Nice Pay Scale Work Life Balance Hybrid System
− Management is not interactive with Employees.
More reviews on the company profile.
Interview experience · Software Development Engineer (SDE)
The online assessment consisted of 8 easy to medium DSA problems and around 40 MCQS from the Aptitude and Computer science Fundamentals.There were three interviews after the online assessment. They mainly focused on DSA
Average difficulty · India · 181 reports
More interview insightsJob description
Overview
Full Stack Software Development Engineer II Job Title: Full Stack Software Development Engineer II (SDE II) 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.
Responsibilities
- 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).
- Design, build, and maintain clean RESTful APIs and microservices.
- Implement comprehensive test suites using Jest, React Testing Library, or backend testing frameworks (e.g., PyTest) to maintain high code coverage and prevent regressions.
Qualifications
- Technical Skills
- 3-5 years of hands-on experience with React, TypeScript, Tailwind CSS, and modern UI component libraries like Shadcn UI.
- State & Data Fetching
- Strong expertise in server-side development using Node.js or Python (FastAPI).
- ORMs & Data Layer
- 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.
- 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.
- Thrives in a fast-paced, high-growth environment, displaying high ownership, adaptability, and resilience.
- 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.
- Exposure to GraphQL, microservices architecture, and event-driven patterns (e.g., Kafka, RabbitMQ).
- 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. .
Nice to have
- Database & Caching
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Job application FAQ
Last updated 23 October 2026
- How do I apply for Full Stack Software Development Engineer II New Bengaluru, Karnataka, India at Sigmoid?
- Open this job on Feedback AI and sign up free (or sign in). You can apply from the job detail page; match scores and skill gaps appear when your profile is complete. Sigmoid may attach structured assessments to interview rounds after you apply.
- Does Feedback AI show a match score for this Full Stack Software Development Engineer II New Bengaluru, Karnataka, India role?
- Yes after you add a resume or skills. Match score ranks this role against your profile — skills met, gaps, level, and location — so you prioritise applications where fit is strongest.
- Is Full Stack Software Development Engineer II New Bengaluru, Karnataka, India remote or on-site in Bengaluru, Karnataka?
- This listing is marked on_site with location Bengaluru, Karnataka. Confirm details on the job description before applying.
- What skills matter for this Full Stack Software Development Engineer II New Bengaluru, Karnataka, India role at Sigmoid?
- This is a mid-level Full Stack Software Development Engineer II New Bengaluru, Karnataka, India role. Key skills include skills listed in the job description. Feedback AI highlights matched vs missing skills on your profile after signup.