Senior Backend Engineer ID95137

We are looking for a Senior Backend Engineer to build backend features for payment flows and reduce technical debt across Java services.

The mandatory requirements are 4+ years of backend engineering experience, production backend services at scale, Java with Kotlin and Python, and payments, fintech, or billing domain experience.

RECRUITMENT PROCESS

• Application — Share a few details about your experience and background.
• Coding Challenge — If applicable, complete it in the coding language you are most comfortable with.
• Video Interview — Record a short video introduction in English.
• Technical Interview or Hiring Manager Interview — Discuss your experience and fit for the role.
• Offer — If it’s a match, you’ll receive an offer.

WHAT YOU’LL GAIN

• Remote work — Work from where you feel most productive.
• Local presence in India — Work in a structured and compliant environment aligned with Indian regulations.
• Competitive compensation in INR — Receive compensation in INR, plus support for learning, education, and wellness.
• Exciting projects — Work with modern technologies for global clients and fast-growing companies.

MUST HAVES

• 4+ years of backend software engineering experience.
• Experience building and operating production backend services at scale.
• Strong 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 PSPs.
• Experience writing unit, integration, and contract tests.
• Experience with Agile/Scrum and sprint-based delivery.
• Ability to ramp up quickly on an existing codebase with minimal guidance.
• Experience with Git-based version control and code reviews using GitLab.
• Experience with GitLab CI/CD pipelines.
• Experience with relational databases, particularly MySQL, and SQL.
• Understanding of distributed systems, including message queues, asynchronous processing, and eventual consistency.
• Experience using Jira for task and sprint tracking.
• Production experience building end-to-end backend payment flows, including charges, refunds, disputes, and webhooks.
• Experience refactoring or migrating legacy services with regression testing.
• Experience resolving production incidents in payment or billing systems.
• Experience designing internal APIs consumed by multiple downstream services.
• Upper-intermediate English level.

NICE TO HAVES

• Experience in a large enterprise engineering organization.
• Experience with Spring Boot, Gradle, or service mesh.
• Knowledge of PCI-DSS compliance, payment security, or financial data handling.
• Experience with observability tooling such as Datadog.
• Open-source contributions or a portfolio of shipped payment features.

WHAT YOU WILL DO

• Implement new backend features for payment flows.
• Reduce technical debt by refactoring legacy services, improving test coverage, and modernizing APIs, including deprecated API migrations.
• Write clean, well-tested, production-ready code that meets engineering standards and passes CI/CD checks and peer review before merging to main.
• Deliver multiple initiatives within agreed sprint cycles and participate in code reviews, design discussions, and sprint ceremonies with the Payments engineering team.
• Collaborate with product managers, partner teams, and engineers to clarify requirements and deliver end-to-end solutions.
• Document owned workstreams, including designs, API specifications, knowledge-transfer documents, and runbooks, to support long-term maintainability.
• Ensure a smooth hand-off to the full-time engineering team at the end of the engagement.