Job Description

We are seeking a backend software engineer for a remote contract engagement building and operating scalable, revenue-critical payment infrastructure. You will deliver payment features, reduce technical debt, and modernize services while collaborating with engineers, product managers, and partner teams.

Enterprise experience strongly preferred.

Key Responsibilities
- Implement production backend features for payment flows.
- Refactor legacy services, improve test coverage, and modernize APIs, including migrations from deprecated APIs.
- Deliver clean, well-tested, production-ready code with passing CI/CD pipelines and peer-review approval.
- Deliver initiatives within agreed sprint cycles and participate in code reviews, design discussions, and sprint ceremonies.
- Clarify requirements with product managers and partner teams and deliver end-to-end solutions.
- Produce designs, API specifications, knowledge-transfer documentation, and runbooks for owned workstreams.




- Support maintainability and a smooth handoff to the engineering team at the conclusion of the engagement.

Qualifications

Must-Have Skills
- 3+ years of backend software engineering experience.
- Experience building and operating production backend services at scale.
- Robust proficiency in Java as the primary programming language, with Kotlin and Python as complementary skills.
- Hands-on experience with RESTful and GraphQL APIs, microservices, and event-driven systems.
- Payments, fintech, or billing domain experience, including gateways, processors, or payment service providers.
- Experience writing unit, integration, and contract tests.
- Agile/Scrum experience with sprint-based delivery.
- Ability to ramp quickly on an existing codebase with minimal guidance.
- Git-based version control and code review using GitLab.
- Hands-on experience with GitLab CI/CD pipelines.
- Relational database experience with MySQL and SQL.
- Distributed systems experience with message queues, asynchro

📌 #138512 - Backend Software Engineer - Payments (Bengaluru)
🏢 Lifted, an Upwork Company™
📍 Bengaluru