Senior Fullstack Engineer (Python, React)

Role & Responsibilities

As a Senior Full Stack Engineer , you will own product features end-to-end — from the data model to the pixel on the screen. You will bridge engineering and product, translating complex business workflows into interfaces that enterprise teams actually understand and enjoy using. You will not hand off to a frontend engineer — you own the full vertical, and you push back on specs when the UX does not make sense.

Own product features end-to-end — complex configuration UIs, workflow builders, and operational dashboards for enterprise users
Build and maintain customer-facing surfaces — SDKs, embeddable flows, and APIs that directly shape how clients experience Zenskar
Design frontend architecture — component structure, state management, performance optimisation, and accessibility
Build the backend APIs and data models for the features you own — no handoff boundary between UI and API
Debug production issues across the full stack — own the problem from symptom to root cause, not just the frontend layer
Collaborate with design, product, and customer success — hear feedback from real users and let it shape what you build next
Partner with the GenAI engineer to surface AI capabilities through clean, well-designed product interfaces
Lead code and design reviews, setting the standard for full-stack engineering quality at Zenskar

THE IMPACT YOU'LL MAKE

Enterprise users will directly experience the quality of your work every day — your product judgment shapes how they think about Zenskar
You will compress the gap between a product idea and a shipped, polished feature — without requiring a separate frontend and backend engineer
Features you build will become the face of the product to new enterprise clients — first impressions, onboarding flows, core workflows
Your design sensibility will raise the bar for how the team thinks about user experience across the product
You will help establish the full-stack engineering culture and architecture patterns the team will build on for years

Ideal Candidate

Strong Senior Full Stack Engineer profiles
Mandatory (Experience 1) – Must have 4+ years of hands-on full stack engineering experience (avoid frontend-heavy only profiles, backend heavy will work)
Mandatory (Experience 2) – Must have strong backend engineering experience using Python, including designing and owning APIs, services, and data models in production environments
Mandatory (Experience 3) – Must have strong frontend development experience using React (or equivalent), including component architecture, state management, and building production-grade user interfaces
Mandatory (Experience 4) – Must have end-to-end ownership experience, building and shipping features across the full stack (UI + API + database) without clear handoff boundaries
Mandatory (Experience 5) – Must have strong web fundamentals, including understanding of browser rendering, performance optimization, and accessibility best practices
Mandatory (Experience 6) – Must be able to demonstrate solving complex problems on both frontend and backend, clearly articulating trade-offs, decisions, and outcomes
Mandatory (Experience 7) – Must have solid experience with databases (SQL/NoSQL), including schema design, query optimization, and handling performance bottlenecks
Mandatory (Company) - Must have worked in product-based companies, (preferred early-stage startups with Seed to Series C/D with fast-paced shipping culture)
Mandatory (Education) - Strong CS fundamentals required (CS degree or equivalent). Candidates from Tier-1 institutes (IITs, BITS, IIITs) are preferred but not mandatory
Preferred (Skill 1) – Strong proficiency in TypeScript, with experience in type-safe architecture and scalable frontend/backend systems
Preferred (Skill 2) – Experience with testing frameworks such as Cypress / Playwright and strong unit testing practices
Preferred (Skill 3) – Experience working with cloud platforms (AWS preferred)

Perks, Benefits and Work Culture

Variable: Based on performance
ESOPs (for full time roles)

Benefits (for Full-time Roles)

Health insurance
Generous vacation policy
Learning and development budget
Team events and company offsites
Maternity and Paternity benefits
Company Laptop
Friday game nights

Skills: python,stack,react,enterprise,b2b saas,architecture

Senior Fullstack Engineer (Python, React)

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