Job Title: Senior Backend Engineer

Years of experience: 3-6 yrs.

Location: Pune

Roles and Responsibilities:

You will own backend reliability across the full product. This role requires strong context-switching, product thinking, and the ability to work across multiple domains.
Shipping a healthy mix of features, audits, and bug fixes - from quick 30-minute fixes to multi-day changes across multiple services.
Owning at least one production issue end-to-end: diagnosing the issue, writing a failing test, shipping the fix, and documenting the postmortem.
Running API audits by identifying slow, flaky, or incorrect endpoints, creating a clear checklist of findings, and either fixing them or handing them off cleanly.
Testing features with high precision, as if there is no QA team.
Pushing back when a requirement or specification does not make sense.
Working agentically with AI tools to improve speed, quality, and engineering output. Expertise in Using AI agents to explore, refactor, and ship code.
Reviewing AI-generated code with the same rigour as a junior engineers PR. Catching subtle abstraction or logic mistakes introduced by AI.

Must have skills:

3-6 years of experience building production backends with Node.js + TypeScript.
Strong experience with Express.js or NestJS.
Deep understanding of MongoDB and MySQL, including schema design, indexes, query plans, denormalisation decisions, and performance tuning.
AWS fluency, including at least ECS, SQS, Lambda, CloudWatch, and S3.

Good to have:

Experience with New Relic, Datadog, or Grafana.
Ability to build dashboards, write queries, and create alerts based on real signals.
Experience with Razorpay or any Indian payments stack such as Cashfree, PayU, or Stripe India.
E-mandate or NACH experience.
Python experience for data jobs, fixtures, automation, or scripting.
React.js experience for small admin tools or internal dashboards.
Open-source contributions, side projects, custom AI tools, or technical writing, or technical writing

Sr. Backend Engineer(Node.js, Express.js, Typescript, AWS)-Product Based Startup-Pune