Java Engineer

Explipro Group AB

Senior Java Engineer – Build the Future in the Cloud As a Senior Java Engineer at Explipro, you’ll be right at the heart of designing, building, and optimizing cloud-native applications that power real-world solutions. We work with Java, Spring Boot, and top-tier cloud platforms like AWS and Azure to deliver systems that are scalable, secure, and future-proof. This isn’t just about writing code – it’s about shaping architecture, influencing technical decisions, and delivering value that clients can see and feel. You’ll collaborate closely with other engineers, designers, and stakeholders, ensuring every solution is as elegant as it is effective. What You’ll Be Doing Create & innovate – Design and develop modern cloud-based applications with Java and Spring Boot. Streamline delivery – Build and maintain CI/CD pipelines to keep deployments smooth and efficient. Collaborate – Work with cross-functional teams to bring features from concept to launch. Solve big challenges – Troubleshoot complex technical problems and find solutions that stick. Elevate quality – Participate in code reviews and champion best practices. What We’re Looking For 7+ years of professional Java development experience. Solid understanding of CI/CD tools and processes. Hands-on experience with AWS, Azure, or Google Cloud. Strong English communication skills, written and spoken. Degree in Computer Science or related field. Problem-solving mindset and an eye for detail. Why You’ll Love Working Here At Explipro, we keep things helpful, simple, and human. We value integrity, transparency, and genuine teamwork. Here, you’ll find: A supportive, growth-oriented culture. Competitive salary and great benefits. Flexible work conditions to suit your life. Continuous learning opportunities.

Hawk-Eye Innovations

Senior Java Engineer Salary Banding: HUF 1.5M - HUF 2.2M per month Contract: Full-Time, Permanent Working Location: Hybrid, 2 Days a week in the office, minimum Office Location: Budapest Join Our Team as a Senior Java Engineer at Hawk-Eye Innovations Hi, I’m Peter Laszlo, Backend Discipline Lead and hiring manager for this role. I’m excited to invite you to apply for the Senior Java Engineer position in our Data and Platforms Value Stream at Hawk-Eye Innovations. If you're passionate about building scalable backend systems and want to work on high-impact projects for sports around the world, this could be the ideal role for you. What Your Day Will Look Like As a Senior Java Engineer in our team, you'll play a key role in designing, developing, and optimizing data-intensive backend services that power live events. Our team is responsible for managing data feeds, event-driven processing, and cloud-based infrastructure to deliver real-time insights to global leagues and partners. You’ll work in an agile environment, collaborating with engineers across our backend team. Given the high-profile nature of our work, we operate in a fast-moving environment where efficiency and scalability are key to success. What We Value At Hawk-Eye, we believe in collaboration, ownership, and innovation. We strive to create an environment where engineers can contribute meaningfully, solve challenging problems, and improve their skills. Given the pace of work, we value engineers who can hit the ground running, take initiative, and contribute to mission-critical projects from day one. Key Responsibilities * Develop, optimise, and maintain backend services using Java (Spring Boot) * Contribute to design decisions for new and existing projects * Deploy and scale applications in AWS (ECS, Lambda, S3, DynamoDB, etc.) * Enhance system observability, ensuring real-time monitoring and logging using tools like Datadog * Work on event-driven architectures, leveraging message queues (Pulsar, Kafka, RabbitMQ, SQS, etc.) * Collaborate with engineers, stakeholders and external partners to meet high-impact project deadlines * Ensure system reliability and performance in high-traffic, real-time environments Tech Stack and Skill Requirements Required: * Strong Java 17 & Spring Boot experience * Knowledge of cloud platforms (AWS preferred) * Familiarity with observability tools (e.g., Datadog, Prometheus, OpenTelemetry) * Experience with microservices and distributed systems * Understanding of monitoring, logging, and traceability * Ability to work efficiently in a fast-paced environment Bonus Skills: * Experience with event-driven architectures (Kafka, RabbitMQ, SQS, etc.) * Knowledge of CI/CD pipelines and automation (GitHub Actions, Terraform) * Familiarity with containerisation and orchestration (Docker, Kubernetes) * Exposure to real-time data processing and sports tech Reward, Benefits, and Wellness * Annual Leave: Standard according to local labour law * Flexible Working: Hybrid model (2 days in the office per week) * Exclusive Perks: Access to sporting events and tickets, Sony Group Company discounts * Additional Benefits: Cafeteria options (SZÉP Card, Nursery & Kindergarten contributions, Annual MOL Bubi Pass), private medical insurance, life & accident insurance, dental clinic discounts, seniority awards, an Employee Assistance Program, and the option to purchase an "All You Can Move" Pass Equal Opportunity Employer Hawk-Eye is committed to fostering an inclusive and diverse workplace. We ensure all employees are treated fairly, regardless of gender, marital status, race, nationality, religion, age, disability, or union membership status. We value diversity and strive to create an environment where everyone can reach their full potential. Apply Today! This is a fantastic opportunity to join Hawk-Eye Innovations and make a significant impact in football technology. If you're looking for a role where you can solve real-world problems at scale, we’d love to hear from you!

Hawk-Eye Innovations

Principal Java Engineer - Backend Platform Salary: £76,340 - £100,340 Per Annum Contract: Full-Time, Permanent Location: Hybrid - minimum 2 days per week in office, Basingstoke/London/Bristol ABOUT THE ROLE The Principal Software Engineer (Full-Stack, Backend-leaning) is a senior engineer responsible for the backend architecture, data pipelines, and API layer of a new sports technology product, while remaining capable of contributing to frontend development as needed. This role sits within a small, fast-moving product engineering team and requires someone comfortable owning end-to-end technical delivery across the stack, with backend and data work as the primary focus. WHAT YOU’LL BUILD You will be a core contributor to a new backend platform being built from scratch. The work spans the full data journey - from ingestion at the edge through to storage, transformation, and delivery to end users. Key areas of focus include: * Low-latency data pipelines that ingest and process live sports tracking data, with strict latency requirements for time-critical outputs delivered to coaches and analysts in near real-time. * Event-driven processing using Kafka for streaming data and control messages between on-site devices and cloud services, handling both fast-path live outputs and asynchronous post-processing workflows via SQS and AWS Batch. * Cloud infrastructure on AWS, including Greengrass for edge-to-cloud orchestration, S3 for video and data storage, and Lambda for lightweight processing tasks. * Data transformation and aggregation layers that normalise tracking outputs, store them in a data lake, and make them available to downstream consumers via clean API contracts. * REST and WebSocket APIs that serve both a live data product for immediate consumption and an insights portal for historical analysis and performance comparison. * Observability and reliability - instrumentation, logging, and tracing are built in from the start, not bolted on. The platform needs to run 24/7 without on-site support. KEY RESPONSIBILITIES * Design and build backend services and APIs (REST/WebSocket) supporting data ingestion, transformation, and delivery to frontend and downstream consumers, with particular attention to latency and throughput given real-time processing requirements. * Own data storage and pipeline architecture, including integration with streaming/event infrastructure. * Implement authentication and authorisation in line with the team's chosen cloud identity and access management approach. * Provide technical direction and review for frontend development (React/TypeScript), working closely with frontend engineers to align on approach, component contracts, and data shapes - this is a collaboration and oversight function rather than day-to-day frontend delivery. * Collaborate closely with computer vision/data science engineers to define and consume data contracts. * Participate in technical decision-making for a product in active development, including architecture choices with long-term implications for scale, latency, and maintainability. * Contribute to technical leadership of the wider engineering team, given the seniority of this role. SKILLS AND EXPERIENCE * Strong backend engineering background with production experience in Java (required). * Demonstrated experience building low-latency, high-throughput systems - this is a core requirement, not a nice-to-have. * Working knowledge of a modern frontend framework such as React/TypeScript, sufficient to review and direct frontend work rather than deliver it independently. * Experience with cloud infrastructure and event-driven architectures (e.g. Kafka or equivalent streaming technology). * Experience designing and evolving API contracts (OpenAPI or similar) in a fast-moving, still-evolving product environment. * Familiarity with modern cloud identity and access management approaches (e.g. AWS Cognito or equivalent) is a plus. * Strong communication skills - able to work directly with product and cross-functional stakeholders, and to mentor or direct engineers outside their own core discipline. * Comfortable with ambiguity: this is a build-phase product with evolving scope and infrastructure decisions still being finalised. BENEFITS AND PERKS * 25 days annual leave (excluding bank holidays) * Enhanced pension scheme with 5% matching * Hybrid working model * Complimentary Unmind wellbeing app * Onsite gym (Basingstoke) * Access to sporting events and tickets * Sony Group Company discounts EQUAL OPPORTUNITY EMPLOYER Hawk-Eye is committed to fostering an inclusive and diverse workplace. We ensure all employees are treated fairly, regardless of gender, marital status, race, nationality, religion, age, disability, or union membership. We value diversity and strive to create an environment where everyone can reach their full potential. APPLY TODAY If you are passionate about building high-performance backend systems and want to work on real-time data products at scale, we would love to hear from you.