#109 - Backend Software Engineer - Payments Platform

Lifted (an Upwork Company)

IndiaremotePosted 16 days ago

Skill Required

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Key highlights

5+ years of backend engineering experience with Java and Spring Boot in production microservices
Apollo GraphQL client experience is required
Candidates must be based in an eligible APAC location
Working-hour coverage aligned with India Standard Time (IST) is required
Enterprise experience is strongly preferred
Experience with financial-grade backend systems requiring correctness, idempotency, and consistency

Role overview

We are seeking a hands-on Backend Software Engineer to build and maintain payment services in a distributed financial systems environment. You will add new payment capabilities, deliver features and bug fixes, and improve the reliability of production Java and Spring Boot services.

Responsibilities

Develop and maintain production Java and Spring Boot services for a payments platform.
Add new payment methods and deliver features, bug fixes, and reliability improvements.
Deliver production-ready changes through GitLab CI, with unit and integration test coverage that meets JaCoCo quality gates.
Improve observability and resilience, and support safe canary and production deployments gated by Datadog monitors.

Requirements

5+ years of backend engineering experience with Java and Spring Boot in production microservices.
Mid-to-senior-level experience with demonstrated ownership of production services in a distributed systems environment.
Experience building GraphQL APIs with Netflix DGS or consuming APIs through the Apollo Java/Kotlin client. Apollo GraphQL client experience is required.
Hands-on experience with AWS SQS, Apache Kafka, or RabbitMQ in event-driven distributed systems, including building or maintaining a production Spring Boot service that consumes events.
Transactional design
Optimistic locking
Writing JPA entities
Managing production schema migrations
Experience writing JUnit 5 unit tests with Mockito and integration tests against live environments.
Proficiency with Gradle multi-module builds.
Experience with GitLab CI/CD and Datadog metrics and monitors, including using Datadog monitors as deployment quality gates.
Responsible use of AI coding assistants, such as GitHub Copilot or Claude, while maintaining code quality and correctness.
Experience with financial-grade backend systems requiring correctness, idempotency, and consistency.
Ability to reason clearly about transactional boundaries across external systems, such as a third-party billing platform and a local metadata store.
Experience designing idempotent event handlers.
Experience integrating external REST- or SDK-based third-party platforms.
Java and Spring Boot
GraphQL and the Apollo Java/Kotlin client
AWS SQS, Apache Kafka, or RabbitMQ
JPA/Hibernate, Spring Data JPA, and MySQL/Aurora
JUnit 5 and Mockito
Gradle
GitLab CI/CD
JaCoCo
Datadog
AI coding assistants used responsibly, such as GitHub Copilot or Claude
Candidates must be based in an eligible APAC location.
Working-hour coverage aligned with India Standard Time (IST) is required.

Nice to have

Spring Boot 3 experience.
Prior billing or payments domain experience.
DynamoDB with AWS SDK v2 and/or MongoDB with Spring Data in a multi-store architecture.
Netflix DGS experience.
Enterprise experience is strongly preferred.