Senior Backend Engineer
First seen by Alion on Oct 8, 2026.
Job Description :
What You'll Do :
- Design and build the core Node.js services and REST APIs from scratch, built to scale as we grow.
- Own system design end to end : service boundaries, data flow, caching, queueing, failure modes, and scale.
- Ship AI/ML-powered features, including LLM and agentic capabilities.
- Use LLMs and agentic tooling across the SDLC, from design and code generation to testing and debugging.
- Model data and optimize SQL/NoSQL queries for performance; integrate with third-party platforms.
- Debug production issues, own reliability, and set the engineering standards the rest of the team will grow into.
Ideal Candidate :
Mandatory Experience :
- Must have 7+ years of hands-on Backend Engineering experience using Node.js building production-grade systems for B2C products at meaningful consumer scale.
- Must be AI-native in their own engineering workflow : already uses LLMs and agentic tooling across the SDLC, from design and code generation through testing and debugging.
- Must have owned backend architecture end to end, including greenfield builds.
- Should be able to make early architecture calls and reason clearly about service boundaries, data flow, caching, queueing, failure modes, scalability, and reliability trade-offs under real constraints.
- Must have a solid understanding of backend fundamentals, including API development, service-oriented architecture, data structures, algorithms, and clean coding practices.
- Must have experience designing, building, and maintaining APIs and backend services, including integrations with external systems and third-party platforms.
- Must have strong experience working with databases (SQL and/or NoSQL), including efficient data modeling, query optimization, and performance tuning.
Mandatory Company :
- Must have worked in B2C product companies / startups at meaningful consumer scale. (WealthTech, FinTech, or high-growth consumer product background is highly preferred).
Mandatory Stability :
- Must have a stable career history, with consistent tenure across previous companies; frequent job-hopping will not be considered.
Mandatory AI Product :
- Must have experience building and shipping products that use LLMs and agentic workflows to end users.
Mandatory College :
- B.Tech or Dual degree (Btech and Mtech or Integrated Msc/MS) from Tier 1 Engineering Institutes (IITs, not NITs). Candidates from other institutions will not be considered unless they come from top top-tier product companies.
Mandatory Compensation Alignment :
- Candidate must be comfortable with the compensation structure where the company matches their current CTC and provides ESOPs, without any salary hike.
Mandatory Note :
- Seed-funded WealthTech startup. Candidate must be comfortable in an early-stage, fast-paced environment with shifting priorities.
- Founding tech team role. Work from office, 5 days a week. Candidate must be willing to own the backend end to end and set engineering standards.
Preferred Note :
- Previous founding engineer or early-team startup experience is a plus.
Skills
Backend Architecture, REST API, Node.js, SQL, NoSQL, System Design, System Architecture, Data Structure, Algorithm