Senior Backend Engineer Java, SQL, AWS & Distributed Systems

Role:

• We are hiring a strong senior backend engineer for a high-impact financial technology platform.
• This role is ideal for engineers who enjoy solving practical backend, SQL, and business-data problems.
• They are looking for someone who can understand business requirements, clarify assumptions, write clean Java code, work with relational data, and explain technical trade-offs clearly.

Responsibilities:

• Design, develop, and maintain backend services using Java and Spring Boot.
• Understand business problems and translate them into practical technical solutions.
• Work with relational databases and write SQL queries involving multiple tables, joins, filters, aggregations, and validations.
• Analyse table relationships, data grain, and business rules before writing SQL.
• Troubleshoot slow queries using execution plans, indexing, and query restructuring.
• Design scalable and extensible Java components using object-orientated design, SOLID principles, and practical design patterns.
• Think through low-level design areas such as collections, data structures, thread safety, duplicate processing, and multiple application instances.
• Support production issue investigation, root cause analysis, and performance improvements.
• Communicate assumptions, technical decisions, trade-offs, risks, and long-term solution options clearly.

Required Skills:

• 7+ years of backend software engineering experience.
• Strong hands-on Java experience, preferably Java 8 or above.
• Strong experience with Spring Boot, REST APIs, Hibernate/JPA, and backend application development.
• Ability to write and explain SQL queries involving multiple related tables.
• Ability to understand ERDs, table relationships, data grain, and duplicate-counting risks.
• Experience troubleshooting slow queries using execution plans, indexing, and query restructuring.
• Strong communication skills and ability to explain assumptions, trade-offs, and technical decisions clearly.

Preferred Skills:

• Experience in banking, payments, fintech, trading, investment, insurance, or other transaction-heavy platforms.
• Experience with Kafka, RabbitMQ, JMS, or event-driven architecture.
• Exposure to AWS, Docker, Kubernetes, Jenkins, GitLab CI, GitHub Actions, or similar tools.
• Experience handling production incidents, root cause analysis, and performance bottlenecks.
• Exposure to high-volume systems where reliability, scalability, and data accuracy are critical.

Assessment Process:

1. HackerRank assessment covering backend Java and SQL.

2. Technical interview and practical case-study discussion.