Senior Backend Engineer

Location: Rajkot, Gujarat

Experience: 4–6 years

Type: Full-time

Company: Untie-it Technologies

About the Role

We're hiring a hands-on Senior Backend Engineer to take ownership of production backend systems. Your primary language can be Python or Node.js — we care about engineering depth, not which syntax you think in.

This is a high-ownership seat: you'll make architecture decisions, scale live systems, integrate and evaluate LLMs in real products, guide a small development team, and communicate directly with stakeholders. There is no architect above you catching your mistakes — the judgment is the job.

We're looking for someone who understands their language beneath the framework, has scaled real systems on AWS, and treats LLMs as an engineering discipline — evaluations, structured outputs, cost control — rather than magic.

Key Responsibilities

As a Senior Backend Engineer at Untie-it, you will:

• Own backend systems end-to-end: design, build, deploy, monitor, and scale.
• Architect and maintain APIs and data stores that hold up as load grows — parallelism, queuing, caching, and cost are your daily concerns.
• Build and improve LLM-powered features: prompt/output contracts, evaluation sets, accuracy improvement, and API cost tracking.
• Make and document architecture decisions (ADRs); design out single points of knowledge, not just single points of failure.
• Guide delivery for a small team (4–6 developers): sprint planning, backlog refinement, breaking user stories into pickable tasks, code review, and mentoring.
• Communicate directly with stakeholders: estimates, trade-offs, timelines, and the occasional hard conversation.
• Run structured R&D: when asked to evaluate a new tool or approach, you return with clear criteria, results from real data, and a written recommendation.

What We Need From You

• 4+ years of backend engineering in Python or Node.js — genuinely, beneath the framework.
• Framework experience (Django/FastAPI or Express/NestJS) is expected; framework-only experience is not enough.
• Production API experience — design, versioning, security, and debugging slow endpoints with evidence rather than guesses.
• Technical leadership — you can take a user story and break it into tasks a team can pick up, you document as you go (ADRs, runbooks) so knowledge never lives only in your head, and you can explain a technical decision to a non-technical audience and stand behind it.
• Scaling scars — you've watched a database fall over before the app servers did, and you know what to do about it (and it isn't "upgrade the instance").
• AWS fundamentals — Lambda and its real limits, SQS/SNS/EventBridge, S3-driven workflows, IAM, and cost awareness. You've been paged for something you built.
• LLM application experience — structured outputs, evaluation sets, handling non-determinism, rate limits, and API cost as a first-class metric.
• AI-assisted development maturity — you use modern coding tools daily and can explain every line you merge.

Nice to Have

• Experience with both Python and Node.js.
• Azure Cloud experience.
• Vector search experience.
• GraphQL in production.
• Frontend working knowledge.

Why This Role

• Genuine ownership of production systems, not a component of a component.
• Direct stakeholder exposure — your communication skills compound here.
• Real engineering problems: measurable accuracy targets, real cost constraints, and production stakes.
• Small team, no bureaucracy, your decisions ship.

What You'll Gain at Untie-it

• The opportunity to build solutions for challenging and impactful problems.
• End-to-end ownership of your projects.
• A competitive salary and flexible work schedule that respects your work-life balance.
• Regular social and team-building events, both monthly and quarterly.
• The chance to grow your career while making a meaningful impact in a dynamic startup environment.

How to Apply

Interested candidates can apply by:

• Sending their resume to [email protected]
• Sending a Direct Message (DM) on LinkedIn