U02 - Senior Backend Engineer

Role Overview

We are seeking an experienced Senior Backend Engineer to design and build high-performance, scalable, and resilient backend services using Java, Spring Boot, Kafka, and Microservices architecture. The ideal candidate has strong engineering fundamentals, deep understanding of distributed systems, and hands-on experience delivering enterprise applications in fast-paced, highly regulated environments.

Key Responsibilities

• Design, develop, and maintain backend services using Java 11/17, Spring Boot, Spring Cloud, and modern JVM patterns.
• Build microservices following clean architecture, domain-driven design (DDD), and asynchronous design principles.
• Implement RESTful APIs, event-driven components, and backend modules that meet business and technical requirements.
• Optimize backend systems for performance, scalability, fault tolerance, and low latency.
• Design and implement event-driven flows using Kafka (producers, consumers, partitions, schema management).
• Ensure message integrity, idempotency, retries, dead-letter queue strategies, and exactly-once/at-least-once processing where applicable.
• Build streaming and asynchronous integrations to support real-time and near real-time use cases.
• Work with relational and NoSQL data stores (PostgreSQL, Oracle, MongoDB, Redis).
• Design data models, queries, and schemas optimized for performance and maintainability.
• Integrate backend services with internal/external systems using REST, events, or batch interfaces.
• Implement robust automated tests (unit, integration, contract, performance) using JUnit, Mockito, Testcontainers, etc.
• Ensure observability through logging, metrics, and distributed tracing (OpenTelemetry, Prometheus, Grafana).
• Conduct code reviews, improve code quality, and enforce engineering best practices.
• Work closely with DevOps to build CI/CD pipelines (Jenkins, GitLab CI, GitHub Actions, or Azure DevOps).
• Deploy and troubleshoot services on container orchestration platforms (Kubernetes/OpenShift).
• Contribute to infrastructure-as-code and automation initiatives.
• Mentor junior engineers and contribute to knowledge sharing and technical excellence across the team.
• Collaborate with Product, QA, Architecture, and other engineering teams to deliver high-quality solutions.
• Participate in solution design discussions, architecture reviews, and technical decision-making.

Qualifications

• 6-10 years of backend engineering experience, preferably in large-scale enterprise systems.
• Bachelor's/Master's degree in Computer Science, Engineering, or related field.

Strong proficiency in:

• Java 11/17, Spring Boot, Spring Cloud
• Kafka (event-driven systems, streaming patterns)
• Microservices architecture, API design, distributed systems
• RDBMS (PostgreSQL, Oracle, MySQL)
• NoSQL stores (MongoDB, Redis)
• Docker, Kubernetes/OpenShift
• CI/CD pipelines and cloud-native delivery
• Nice to Have
• Experience in banking/payments or other mission-critical environments.
• Familiarity with performance tuning (JVM, GC, load testing tools such as JMeter/Gatling).
• Exposure to messaging systems (RabbitMQ, ActiveMQ) or additional streaming platforms.
• Knowledge of security best practices (OAuth2/OIDC, mTLS, secrets management).