Senior Java Developer

Are you passionate about building technology that powers a global delivery network? Our Logistics Engineering department is at the heart of the Just Eat experience, responsible for the entire delivery lifecycle of millions of orders and supporting our vast network of couriers. The Courier Onboarding team plays a critical role in this mission. Courier Onboarding is the front-door for new applicants around the globe interested in joining JET's courier network. These first experiences we provide to prospective couriers are crucial to guide them through the onboarding process and start delivering as a part of JET's courier network. As a Senior member of our team, you'll be instrumental in developing high-impact product features, setting technical direction, and ensuring the architectural integrity of essential services. You will be expected to own complex technical domains, mentor junior engineers, and drive best practices across the team. These are some of the key ingredients to the role:

• Architect, develop, and maintain highly scalable, robust, and performant backend services using Java, ensuring system resilience and operational excellence.
• Serve as a technical leader in feature development, driving complex projects from inception through deployment and post-release monitoring.
• Conduct rigorous code reviews, providing constructive feedback and enforcing high standards for code quality, design patterns, and system architecture.
• Drive architectural discussions and technical roadmap planning , influencing the long-term strategy and health of our systems.
• Collaborate extensively with cross-functional teams (Product, Data, other Engineering teams) to define requirements, design interfaces, and deliver cohesive, effective solutions.
• Expertly troubleshoot and resolve complex production issues in a high-traffic, distributed microservices environment, minimizing downtime and identifying root causes.
• Mentor and coach mid-level and junior engineers on technical design, engineering best practices, and effective problem-solving.
• Proactively identify and lead initiatives for refactoring, performance optimization, and improvement of development processes (CI/CD, testing methodologies).
• Define and implement comprehensive unit, integration, and performance tests to ensure the quality and reliability of developed features.
• Maintain and enhance continuous integration and continuous delivery (CI/CD) pipelines, ensuring rapid and automated deployment with high confidence.

• Strong demonstrable experience developing and maintaining production-grade backend applications using Java 11+ (or similar modern versions). Strong proficiency with the Quarkus framework, or deep experience with Spring/Spring Boot, is highly desirable.
• Extensive experience designing, building, and operating microservices architectures and resilient, high-volume RESTful APIs.
• Proven track record of mentoring junior engineers, driving engineering best practices, and cultivating a collaborative team environment
• Expertise with relational databases, including advanced knowledge of data persistence, complex query optimization, schema migration, and effective data modelling for scale. Experience with NoSQL databases (e.g., Cassandra, MongoDB) is a significant plus.
• Deep and practical understanding of software engineering principles, including distributed systems design, concurrency, security best practices, and advanced testing methodologies.
• Proven ability to diagnose and resolve complex technical challenges in production environments, leveraging advanced monitoring and observability tools (e.g., Datadog, Prometheus, Grafana, ELK stack).
• A strong, proactive approach to system ownership, architecture evolution, and continuous improvement, coupled with superior analytical and critical thinking skills.
• Exceptional written and verbal communication skills, with the ability to articulate complex technical decisions to both technical and non-technical stakeholders.
• Demonstrated ability to thrive as a key contributor in a fast-paced, dynamic environment, driving technical initiatives independently.
• A humble, inquisitive, and collaborative mindset, with a proven track record of mentoring others and fostering a culture of continuous learning.
• Commitment to staying current with new technologies and best practices within the Java and cloud-native backend development ecosystems.
• Experience with cloud platforms (e.g., AWS, GCP) and containerization technologies (Docker, Kubernetes) is a plus.
• Experience with front-end technologies (React) or acting as a full-stack liaison would be an asset.

Then Just Eat might be the place for you. We're a leading global online food delivery platform, and our vision is to empower everyday convenience., At JET, this is on the menu Our teams forge connections internally and work with some of the best-known brands on the planet, giving us truly international impact in a dynamic environment. Fun, fast-paced and supportive, the JET culture is about movement, growth and about celebrating every aspect of our JETers. Thanks to them we stay one step ahead of the competition. Inclusion, Diversity & Belonging No matter who you are, what you look like, who you love, or where you are from, you can find your place at Just Eat We're committed to creating an inclusive culture, encouraging diversity of people and thinking, in which all employees feel they truly belong and can bring their most colourful selves to work every day. What else is cooking? Want to know more about our JETers, culture or company? Have a look at our career site where you can find people's stories, blogs, podcasts and more JET morsels.