Sr. Backend Engineer (Financial / Accounting Domain)

ApTask
Goregaon, Maharashtra, India

Title: Senior Backend Engineer

Location: Goregaon East, Mumbai

Job Type: Full time

We are looking for a hands-on backend engineer who has personally built and owned a complex, data-correct financial application, and can do it again.

The product is an AI-assisted workbench for fund controllers. Think trial balances, multi-step approval workflows, reconciliation agents, and numbers that become booked accounting entries

downstream.

Ideal domains:

  • Alternative asset management: private equity, private credit, real assets, hedge funds
  • Fund accounting, fund administration, portfolio accounting
  • Corporate accounting, ERP, general ledger, close-management software
  • Banking, capital markets, BFSI broadly

Ideal baseline knowledge:

  • Ledger & close: general ledger, journal entries, trial balance, period close
  • Valuation & fees: NAV, valuations and marks, accruals, fee calculations
  • Controls & audit: reconciliations, audit trails, maker-checker approvals

Technical Requirements

Application Design

  • Python and Java. Built production services in Python (FastAPI, Pydantic, SQLAlchemy, PostgreSQL) and Java (Spring Boot, Maven). Comparable languages and frameworks are acceptable.
  • Spec-driven development. Drove a spec-driven approach end to end through a product development lifecycle. The written spec led requirements, design, implementation, and verification, and it changed before the build did.
  • Enterprise-grade web application development. Architected and owned a robust production web service: authentication/authorization, business logic, data models, data contracts, and application service boundaries.
  • API and domain modeling. Designed contracts a UI and an agent can both consume: versioning, errors, idempotency, and role-based permissions.
  • Correctness with numbers and dates. Handled currency, precision, rounding, negative values, periods, and timezones in production.
  • Snowflake and database architecture. Owned the schema design and implementation for a large-data system.
  • Infrastructure as code. Shipped IaC based application.
  • Testing as a habit. Wrote unit and integration tests with mocked network calls, not “QA will catch it.”

Strong pluses: Experience with the Azure stack.

AI Agent Design

  • AI agent building. Built and owned a production agent end to end: an LLM with a deliberate model choice, a multi-step workflow, the tools it calls, context carried from step to step, and results stored in a database.
  • Structured outputs. Returned a schema the caller can validate.
  • Evals. Built a robust eval framework for a production agent.
  • Human-in-the-loop. Put a stop in code before a journal entry or a submitted close.
  • Deterministic numbers. Kept calculations in services. The agent retrieves, compares, and raises exceptions.
  • Strong pluses: implementation of an MCP server into production, accounting based agentic workflows.

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Questions about this job

How do I apply for the Sr. Backend Engineer (Financial / Accounting Domain) job at ApTask?

Use the apply link on this page: you apply directly with ApTask on LinkedIn. Before you do, score your resume against this job description on Fitboard. It shows which skills and keywords the job asks for that your resume doesn't show, so you can fix them first.

What skills does ApTask want for this Sr. Backend Engineer (Financial / Accounting Domain) role?

The job description asks for Python, Java, FastAPI, Pydantic, SQLAlchemy, PostgreSQL, Spring Boot and Maven. Make sure your resume shows the ones you have, in the words the job uses: applicant tracking systems look for them.

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Is this Sr. Backend Engineer (Financial / Accounting Domain) job remote or onsite?

This is based in Goregaon, Maharashtra.

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