Senior Java Software Engineer

As a Senior Java Developer, you will work on and deliver high-quality applications that meet user needs and business goals. You will be responsible for designing, coding, testing, and maintaining web software using modern technologies and best practices. 

• Design and develop high-quality Java applications using modern engineering practices with Java and Spring Boot.
• Design and implement scalable microservices and secure REST APIs for customers to send data and retrieve tracking details and reports.
• Develop event-driven services and integrations using Apache Kafka for efficient follow-up on shipments, invoices, customs documents, and other data.
• Develop and maintain connections with external providers such as logistics companies, customs authorities, middleware solutions, and partner organisations.
• Design and optimise PostgreSQL database schemas and queries, including performance tuning.
• Deploy and maintain applications on AWS, including containerised deployments using Docker and infrastructure managed via Terraform.
• Write clean, efficient, well-documented code adhering to best practices and design patterns.
• Participate in architecture discussions and technical design reviews, exercising independent judgment on design and abstraction.
• Collaborate with Product Leads, Architects, and DevOps engineers to refine technical solutions and estimate development work.
• Mentor and guide junior developers on technical and professional best practices.
• Participate in code reviews, provide constructive feedback, and troubleshoot and debug complex technical issues.
• Collaborate effectively with other developers, testers, product owners, and stakeholders.
• Use AI-assisted development tools (e.g., OpenAI Codex, Claude Code) to improve productivity while maintaining engineering quality and depth.

• 6+ years of professional experience as a Software Developer with Java and Spring Boot.
• Experience with Spring Data JPA / Hibernate.
• Experience with Apache Kafka and event-driven/asynchronous microservices.
• Experience with PostgreSQL (including AWS RDS PostgreSQL), SQL performance tuning, database design, and normalisation.
• Working knowledge of AWS for application deployment, including ECS/ECR, S3, API Gateway, and CloudFront.
• Experience with Maven for build/dependency management.
• Working knowledge of Git and JIRA in an Agile/Scrum environment. 
• Experience developing and integrating with third-party APIs (both consuming and creating APIs).
• Familiarity with common integration patterns (e.g., REST, message queues).
• Strong understanding of object-oriented programming principles and design patterns (e.g., SOLID principles, hexagonal architecture).
• Excellent software design skills with strong abstraction and modelling capability, and the ability to make independent architectural decisions.
• Experience already using modern AI development tools (e.g. OpenAI Codex, Claude Code) as part of daily workflow, with genuine depth on configuration, evaluation, and effective use (e.g., memory/context management, token usage, multi-agent setups) — not just prompt-level usage.
• Prior experience with enterprise-scale systems and AWS infrastructure is a major plus.
• Having an AWS certification is a plus.