Senior Java Developer

Job Summary

We are seeking an experienced Backend Developer with a strong background in Agentic AI development and robust backend systems. The ideal candidate will have 7+ years of commercial experience, specializing in Java 8+ (Java 17 preferred), Spring Boot, microservices, and event-driven distributed architectures. This role focuses on enhancing engineering productivity and software quality through improvements in delivery pipelines, automated testing, monitoring, and building resilient systems.

• Proficiency in Agentic AI development, including autonomous agents and AI-powered coding agents.
• Deep expertise with Java 8+ (Java 17 preferred), Spring Boot, microservices, and event-driven distributed architectures.
• Experience with RESTful APIs, Docker, AWS (Lambda, SNS, SQS, DynamoDB, KMS), and MySQL.
• Familiarity with observability tooling (Splunk, Datadog) and resiliency patterns (Resilience4j).
• Strong grounding in unit testing with JUnit and Mockito.
• Experience with CI/CD pipelines (Azure DevOps, Jenkins, GitHub Actions).

Job Description

At Quest Global, it's not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impossible possible. Our people are driven by the desire to make the world a better place—to make a positive difference that contributes to a brighter future. We bring together technologies and industries, alongside the contributions of diverse individuals who are empowered by an intentional workplace culture, to solve problems better and faster.

Key Responsibilities

• Delivery pipeline improvements (CI/CD, build reliability, deployment automation)
• Improving automated test coverage and quality across services, with a target of achieving and maintaining high coverage levels where appropriate
• Monitoring, telemetry, and observability for integrations with third-party services
• Fallback and resiliency mechanisms (circuit breakers, retries, failover)
• Making microservices more robust and self-healing
• Refactoring legacy services to improve maintainability, testability, performance and operational resilience

Requirements

• Candidate must demonstrate proficiency in Agentic AI development, including creating autonomous agents, integrating tools and APIs, implementing multi-step workflows, and effectively utilizing AI-powered coding agents (CLI and IDE-based) to enhance engineering productivity and software quality.
• 7+ years of commercial back-end development experience
• Strong hands-on experience with Java 8+, with Java 17 exposure preferred
• Deep expertise with Spring Boot, microservices, and event-driven distributed architectures
• Solid experience designing and building RESTful APIs
• Working knowledge of Docker and container-based deployment
• Practical experience with AWS, including Lambda, SNS, SQS, DynamoDB, and KMS
• Hands-on experience with MySQL — schema design, query tuning, and performance optimisation
• Experience with observability tooling — metrics, logging, distributed tracing (e.g. Splunk, Datadog, Prometheus, Grafana, OpenTelemetry, CloudWatch)
• Strong grounding in unit testing with JUnit and Mockito, with a quality-first mindset
• Familiarity with resiliency patterns (Resilience4j, circuit breakers, bulkheads)
• Experience with CI/CD pipelines (Azure DevOps, Jenkins, GitHub Actions, GitLab CI, or similar)
• Bachelor's degree in Computer Science or equivalent

Desirable

• Kubernetes / container orchestration
• Prior experience focused on platform observability
• Experience working across distributed teams and time zones
• Experience with API and event contract testing, and establishing automated compatibility guarantees between microservices and their consumers

About the Company

We are known for our extraordinary people who make the impossible possible every day. Questians are driven by hunger, humility, and aspiration. We believe that our company culture is the key to our ability to make a true difference in every industry we reach. Our teams regularly invest time and dedicated effort into internal culture work, ensuring that all voices are heard.

We wholeheartedly believe in the diversity of thought that comes with fostering a culture rooted in respect, where everyone belongs, is valued, and feels inspired to share their ideas. We know embracing our unique differences makes us better, and that solving the world's hardest engineering problems requires diverse ideas, perspectives, and backgrounds. We shine the brightest when we tap into the many dimensions that thrive across over 21,000 difference-makers in our workplace.