Backend Engineer (m/f/d)

Hawk-Eye Innovations - Budapest

Salary:
HUF 1.8M - 2.6M per month

Contract:
Full-Time, Permanent

Location:
Hybrid - minimum 2 days per week in office, Budapest

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

• Annual leave in line with Hungarian labour law
• Hybrid working - minimum 2 days per week in office
• Sony Group perks - discounted tickets and events
• Cafeteria allowance: SZEP Card, nursery/kindergarten support, MOL Bubi Pass
• Private medical, life and accident insurance, dental discounts
• Seniority awards and Employee Assistance Programme
• All You Can Move fitness pass option

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.

About the role

Currently, at Tesco Technology we work in a hybrid model. We love working from home, but we also love connecting,

 

collaborating,

 

and innovating with our colleagues in person.

We meet in our office in Budapest for 3 days a week. As a Software Development Engineer (JAVA), you will be an expert in different backend technologies and develop software that helps both our customers and colleagues in their daily lives.

You will be responsible for the entire development and support process for a software programme. Your applications will make previously complex tasks simple with the impact ranging from saving time, effort, or money to re-defining normal.

What will you do?

• Demonstrate in-depth knowledge of IDE, language and toolset in Java Comfortably test drive any feature
• Profile and optimise code Identify and apply appropriate design patterns to problems
• Demonstrate a good understanding of cohesion,

and how to apply it

• Demonstrate a good working knowledge of one relevant operating system Script and automate within the relevant environment

You will be responsible for

As a Software Development Engineer (JAVA), you will be an expert in different backend technologies and develop software that helps both our customers and colleagues in their daily lives. You will be responsible for the entire development and support process for a software programme. Your applications will make previously complex tasks simple with the impact ranging from saving time, effort, or money to re-defining normal.

 

You will need

• Experience of operating in the cloud (AWS or Azure)
• Understanding NoSQL technologies (Redis, MongoDB or similar)
• Exposure to a variety of frameworks and libraries (Spring Boot, Micronaut or similar)
• Experience using Docker and Kubernetes (or similar) for

 

containerization, scalability and monitoring applications

• Experience in Lean and Agile environments and understanding of principles behind methodologies such as BDD, ATDD and TDD

Whats in it for you?

Tesco is a diverse and exciting employer, dedicated to being #aplacetogeton, providing career-defining opportunities to all of our colleagues. If you chose to join our business, we will provide you with: 

• Permanent contract from the go – as a sign of our trust in your abilities
• Yearly salary bonus – based on both individual and business performance
• Extensive private healthcare - complex care package including a wide range of specialists, medical services, and free flu vaccination
• Cafeteria
• Relocation Help - professional service to secure relevant working permits and other necessary documents
• Learning opportunities - certified technical training and learning platforms like Udemy, Pluralsight, and O'Reilly
• Referral Bonus
• Learning culture and excellent opportunities to develop your career within your chosen field or something altogether new
• Varied and exciting projects to play a part in – there is always something new and exciting in the pipeline

 

If that sounds exciting, then we'd love to hear from you.

About Us

Tesco Business Solution and Tesco Technology were established in Budapest in 2019, supporting the Tesco retail business in Central Europe and the Tesco Group. TBST and Tesco Technology are part of our global business services and technology organisations within Tesco. 

 

In the UK, Ireland, India, Hungary, Poland, the Czech Republic we operate to offer great value to our customers every day. 

 

In Budapest, our Technology hub currently employs more than 200 – and a growing number – of highly trained software engineers and managers who are implementing global software development projects across fulfilment, supplier and product management, online and in-store loss prevention, and our online grocery sites. 

 

Our goal is to bring significant changes to the market by using the latest technologies. We are focusing on a large variety of modern technologies from the backend space and frontend to UX, UI and even data science and engineering. 

 

We are aiming to drive business value through innovation and to create an organization that fundamentally transforms the retail environment. 

 

We put accountability and ownership on the individuals and their teams in order to run a horizontal organization where teamwork is extremely important. With an end-to-end approach, we offer our colleagues opportunities for self-development and career growth. 

 

Our colleagues are the key to our success at Tesco. We foster an environment of openness and collaboration. We draw from the diversity, knowledge and experience of our colleagues. It is all about equal opportunities, no matter who you are, or where you come from, you can get on at Tesco. 

 

Our teams consist of individuals who can truly make a difference. Focussing on building a world-class business services centre alongside cutting-edge technology capability, they are working towards our goal of serving our customers and colleagues a little better every day. 

 

We are expanding our operations locally and we are looking for the best talent.

About the role

Currently, at Tesco Technology we work in a hybrid model. We love working from home, but we also love connecting,

 

collaborating,

 

and innovating with our colleagues in person.

We meet in our office in Budapest for 3 days a week. As a Software Development Engineer (JAVA), you will be an expert in different backend technologies and develop software that helps both our customers and colleagues in their daily lives.

You will be responsible for the entire development and support process for a software programme. Your applications will make previously complex tasks simple with the impact ranging from saving time, effort, or money to re-defining normal.

What will you do?

• Demonstrate in-depth knowledge of IDE, language and toolset in Java Comfortably test drive any feature
• Profile and optimise code Identify and apply appropriate design patterns to problems
• Demonstrate a good understanding of cohesion,

and how to apply it

• Demonstrate a good working knowledge of one relevant operating system Script and automate within the relevant environment

You will be responsible for

As a Software Development Engineer (JAVA), you will be an expert in different backend technologies and develop software that helps both our customers and colleagues in their daily lives. You will be responsible for the entire development and support process for a software programme. Your applications will make previously complex tasks simple with the impact ranging from saving time, effort, or money to re-defining normal.

 

You will need

• Experience of operating in the cloud (AWS or Azure)
• Understanding NoSQL technologies (Redis, MongoDB or similar)
• Exposure to a variety of frameworks and libraries (Spring Boot, Micronaut or similar)
• Experience using Docker and Kubernetes (or similar) for

 

containerization, scalability and monitoring applications

• Experience in Lean and Agile environments and understanding of principles behind methodologies such as BDD, ATDD and TDD

Whats in it for you?

Tesco is a diverse and exciting employer, dedicated to being #aplacetogeton, providing career-defining opportunities to all of our colleagues. If you chose to join our business, we will provide you with: 

• Permanent contract from the go – as a sign of our trust in your abilities
• Yearly salary bonus – based on both individual and business performance
• Extensive private healthcare - complex care package including a wide range of specialists, medical services, and free flu vaccination
• Cafeteria
• Relocation Help - professional service to secure relevant working permits and other necessary documents
• Learning opportunities - certified technical training and learning platforms like Udemy, Pluralsight, and O'Reilly
• Referral Bonus
• Learning culture and excellent opportunities to develop your career within your chosen field or something altogether new
• Varied and exciting projects to play a part in – there is always something new and exciting in the pipeline

 

If that sounds exciting, then we'd love to hear from you.

About Us

Tesco Business Solution and Tesco Technology were established in Budapest in 2019, supporting the Tesco retail business in Central Europe and the Tesco Group. TBST and Tesco Technology are part of our global business services and technology organisations within Tesco. 

 

In the UK, Ireland, India, Hungary, Poland, the Czech Republic we operate to offer great value to our customers every day. 

 

In Budapest, our Technology hub currently employs more than 200 – and a growing number – of highly trained software engineers and managers who are implementing global software development projects across fulfilment, supplier and product management, online and in-store loss prevention, and our online grocery sites. 

 

Our goal is to bring significant changes to the market by using the latest technologies. We are focusing on a large variety of modern technologies from the backend space and frontend to UX, UI and even data science and engineering. 

 

We are aiming to drive business value through innovation and to create an organization that fundamentally transforms the retail environment. 

 

We put accountability and ownership on the individuals and their teams in order to run a horizontal organization where teamwork is extremely important. With an end-to-end approach, we offer our colleagues opportunities for self-development and career growth. 

 

Our colleagues are the key to our success at Tesco. We foster an environment of openness and collaboration. We draw from the diversity, knowledge and experience of our colleagues. It is all about equal opportunities, no matter who you are, or where you come from, you can get on at Tesco. 

 

Our teams consist of individuals who can truly make a difference. Focussing on building a world-class business services centre alongside cutting-edge technology capability, they are working towards our goal of serving our customers and colleagues a little better every day. 

 

We are expanding our operations locally and we are looking for the best talent.

At Kpler, we are dedicated to helping our clients navigate complex markets with ease. By simplifying global trade information and providing valuable insights, we empower organisations to make informed decisions in commodities, energy, and maritime sectors.

Since our founding in 2014, we have focused on delivering top-tier intelligence through user-friendly platforms. Our team of over 850 experts from 69 countries works tirelessly to transform intricate data into actionable strategies, ensuring our clients stay ahead in a dynamic market landscape. Join us to leverage cutting-edge innovation for impactful results and experience unparalleled support on your journey to success.

Engineering crews in Chartering & Logistics Tribe are responsible for growing and scaling our Freight, Voyage Calculator, Chartering and Marine Traffic Inbox products for our wide range of customer personas.

We are seeking a Mid-Level Full-Stack Engineer to join our Voyage Calculator crew and help us grow and scale one of the core products in our Chartering suite.

Key Responsibilities

• Ship new Voyage Calculator features end-to-end
• Build and maintain backend services with clean domain boundaries
• Implement polished, consistent frontend experiences
• Cover new and existing functionality with solid E2E tests
• Challenge the status quo where it improves quality
• Try new frameworks and tools, keep learning
• Own monitoring and alerting to meet SLAs and SLOs
• Work closely with Product, Design and other crews in the Tribe

Requirements
Essential:

• Excellent command of written and spoken English
• 3-5 years of full-stack engineering experience
• Strong TypeScript proficiency (our new services are TypeScript-first)
• Solid backend engineering skills and understanding of microservices architecture
• Experience with relational databases, ideally PostgreSQL
• Solid understanding of RESTful APIs and service-to-service integration
• Frontend experience with a modern FE framework (Vue 3 preferred, React acceptable)
• Experience working with frontend design systems and shared component libraries
• Experience with E2E testing frameworks and test implementation
• Familiarity with DevOps tools including Git, Docker, and Kubernetes
• Excellent communication skills and collaborative mindset
• Outcome-focused approach with ability to own features end-to-end
• Openness to work in and around existing Scala and Python while migrating to TypeScript services
• Bachelor's degree in Computer Science, Computer Engineering, or equivalent field

Desirable

• Exposure to domain-driven architecture or hexagonal architecture
• Background in building complex, data-heavy applications
• Experience with Elasticsearch
• Experience with Scala or Python in production
• Experience with Mapbox for interactive mapping and geospatial data visualization
• Previous experience working closely with design teams and PMs
• Exposure to the maritime, commodities, or logistics domain

We are a dynamic company dedicated to nurturing connections and innovating solutions to tackle market challenges head-on. If you thrive on customer satisfaction and turning ideas into reality, then you’ve found your ideal destination. Are you ready to embark on this exciting journey with us?

We make things happen
We act decisively and with purpose, going the extra mile.

We build
together
We foster relationships and develop creative solutions to address market challenges.

We are here to help
We are accessible and supportive to colleagues and clients with a friendly approach.

Our People Pledge

Don’t meet every single requirement? Research shows that women and people of color are less likely than others to apply if they feel like they don’t match 100% of the job requirements. Don’t let the confidence gap stand in your way, we’d love to hear from you! We understand that experience comes in many different forms and are dedicated to adding new perspectives to the team.

Kpler is committed to providing a fair, inclusive and diverse work-environment. We believe that different perspectives lead to better ideas, and better ideas allow us to better understand the needs and interests of our diverse, global community. We welcome people of different backgrounds, experiences, abilities and perspectives and are an equal opportunity employer.

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