Senior Java Backend Engineer

NymCard

full-time

Posted on: 9/29/2025

Location Type: Remote

Location: Remote • 🇮🇳 India

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Senior

Distributed SystemsJavaKafkaMongoDBNoSQLOraclePostgresRabbitMQSQL

About the role

Design and build APIs supporting NymCard's real-time payment infrastructure, processing millions of transactions with focus on scalability, performance, and reliability
Own and drive the design of scalable backend services and APIs that power real-time payments
Collaborate closely with Product, DevOps, and Engineering leads to align system capabilities with business goals
Contribute to architectural decision-making, balancing performance, security, and maintainability
Lead initiatives to evolve the platform from project-based delivery toward a unified product architecture
Conduct thoughtful code reviews, raise engineering standards, and mentor others through technical leadership
Troubleshoot and resolve complex production issues with a focus on root-cause elimination
Influence and support the adoption of best practices in API design, observability, and operational resilience
Provide input into roadmap planning from a technical feasibility and scalability perspective

5+ years of hands-on Java backend development experience, ideally with distributed systems
A strong foundation in system design, architecture, and scalability principles
Proficiency in relational and NoSQL databases (e.g. PostgreSQL, MongoDB, SQL Server, Oracle)
Deep understanding of RESTful API design, OpenAPI standards, and API gateway patterns
Experience designing or integrating with messaging systems like Kafka, RabbitMQ, Amazon SQS/SNS in event-driven architectures
Experience working closely with Product, DevOps, and cross-functional teams to deliver aligned solutions
Knowledge of secure coding practices, data privacy, and application-level security
Familiarity with CI/CD pipelines, agile delivery, and modern software practices
Strong communication skills — able to explain technical concepts to non-technical audiences
Bonus Points — Experience evolving monoliths or legacy systems into modular platform architectures
Bonus Points — Exposure to payments infrastructure, such as card issuing, settlement, or transaction clearing
Bonus Points — Familiarity with PCI DSS compliance and security audits
Bonus Points — Hands-on experience scaling platforms in high-growth or regulated environments
Bonus Points — Contributions to engineering culture, such as mentorship, knowledge-sharing, or internal tooling initiatives
Bonus Points — Past experience working in product-first engineering teams or helping shape roadmaps from a technical lens

Benefits

Tip: use these terms in your resume and cover letter to boost ATS matches.

JavaAPI designsystem designarchitecturescalabilityrelational databasesNoSQL databasesRESTful APIsCI/CDsecure coding practices

communicationtechnical leadershipmentorshipcollaborationtroubleshootinginfluencecode reviewproblem-solvingorganizational skillsadaptability

PCI DSS compliance