Copy of Senior Software Engineer - Processing

United States Digital Space LLC; Greater London; Hybrid; GBP 120,000 - 150,000; Full time

Job summary

United States Digital Space LLC in London is seeking a Senior Software Engineer to join the hybrid engineering team. You will build, run and improve real-time data systems powering betting solutions, with a focus on reliability, performance and maintainability.

The role is hands-on and involves working with Scala-based services, event-driven architectures and modern development practices, including AI-assisted tooling where valuable.

Qualifications

• Strong senior software engineering experience in production systems where reliability, performance and maintainability matter.
• Experience designing, building, maintaining and operating backend services or data-processing systems.
• Experience working with event-driven or event-processing systems, messaging and streaming technologies.
• Ability to work effectively in an existing Scala codebase, or strong experience with similar backend/JVM technologies and a willingness to work with Scala.
• Practical experience debugging and operating production systems, including working with databases and Linux-based environments.
• Experience with software architecture, technical design, requirements engineering, estimation, release planning and code review.
• Ability to communicate clearly with developers, product owners, testers, business stakeholders and operational teams.
• Ability to challenge over-engineering and advocate for simple, robust, maintainable solutions.

Responsibilities

• Lead the design and delivery of robust, scalable solutions using proven tools and patterns.
• Design, build and operate event-driven and event-processing systems using appropriate technologies such as Kafka or similar platforms.
• Help move custom or hand-rolled systems toward simpler, maintainable, industry-standard approaches where this improves the product.
• Maintain and improve existing Scala-based code while advocating for simplicity and efficiency.
• Collaborate with cross-functional teams to ensure solutions align with business goals.
• Mentor and support junior engineers, helping them navigate complexity.
• Participate in architectural decisions and requirements engineering.
• Make pragmatic use of modern development practices, including AI-assisted tools where they add value.
• Ensure systems are performant, reliable and easy to maintain.

Skills

Senior software engineering

Production systems

Scala

Backend services

Event-driven systems

Kafka

Linux

Code review

Communication

Mentoring

Tools

Kafka

NATS.io

NATS JetStream

Linux

Job description

Senior Software Engineer

London, UK. Hybrid - min. 2 days in office per week

Permanent, Full-time

About the company

the company is a premier provider of ultra low-latency, accurate odds data, fast scores, and innovative betting solutions for the global sports betting industry. With offices in London, Chicago, and Belgrade - and team members working worldwide - we deliver cutting‑edge technology and data products that power some of the world’s top sportsbooks.

About the Role

We’re looking for a Senior Software Engineer to join our London‑based engineering team and help build, run and improve the systems behind real‑time sports data products used by betting operators around the world.

This is a hands‑on engineering role for someone who enjoys production systems, event‑driven architecture and pragmatic technical decision‑making. You’ll work on existing Scala‑based services, help simplify complex systems, champion proven tools and patterns, and make thoughtful use of modern development practices, including AI‑assisted tools where they add value.

What You’ll Do:

You’ll be working on systems where reliability, performance and maintainability matter. The role combines hands‑on development, production ownership and technical judgement.

• Lead the design and delivery of robust, scalable solutions using proven tools and patterns.
• Design, build and operate event‑driven and event‑processing systems using appropriate technologies such as Kafka or similar platforms.
• Help move custom or hand‑rolled systems toward simpler, maintainable, industry‑standard approaches where this improves the product.
• Maintain and improve existing Scala‑based code while advocating for simplicity and efficiency.
• Collaborate with cross‑functional teams to ensure solutions align with business goals.
• Mentor and support junior engineers, helping them navigate complexity.
• Participate in architectural decisions and requirements engineering.
• Make pragmatic use of modern development practices, including AI‑assisted tools where they add value.
• Ensure systems are performant, reliable and easy to maintain.

What You’ll Bring:

We’re looking for someone with the skills, experience and mindset to thrive in this role. Ideally, you’ll have:

• Strong senior software engineering experience in production systems where reliability, performance and maintainability matter.
• Experience designing, building, maintaining and operating backend services or data‑processing systems.
• Experience working with event‑driven or event‑processing systems, messaging and streaming technologies.
• Ability to work effectively in an existing Scala codebase, or strong experience with similar backend/JVM technologies and a willingness to work with Scala.
• Practical experience debugging and operating production systems, including working with databases and Linux‑based environments.
• Experience with software architecture, technical design, requirements engineering, estimation, release planning and code review.
• Ability to communicate clearly with developers, product owners, testers, business stakeholders and operational teams.
• Ability to challenge over‑engineering and advocate for simple, robust, maintainable solutions.

Nice to have

• Direct production Scala experience.
• Hands‑on experience with Kafka, NATS.io, NATS JetStream or similar technologies in high‑throughput, real‑time or event‑processing systems.
• Exposure to sports data, betting systems, odds data or other real‑time data products.
• Experience mentoring engineers or leading small technical workstreams.
• Interest in AI‑assisted development and emerging engineering practices.

What You’ll Get From Us

At the company, you’ll be part of a well‑established, technology‑first company with ambitious growth plans and a global footprint. You’ll work alongside brilliant minds in a culture that’s fun, relaxed, and hardworking – where innovation and collaboration are at the heart of everything we do.

We offer a competitive benefits package tailored to your location, and we’re happy to share more details during the hiring process.

Interview Process

• Initial chat with our HR Business Partner.
• A practical technical assessment focused on problem‑solving.
• Interview with the hiring manager.
• Final conversation with a senior leader.

Please note, we use AI tools to record calls during the process. This helps us give you our full attention in the conversation and ensures we can review discussions accurately.

Equal Opportunities & Data Protection

the company is an equal opportunities employer. We welcome applications from all backgrounds and are committed to creating an inclusive, respectful workplace. If you require any adjustments during the recruitment process, please let us know.

We take data protection seriously. Any personal information shared during the application process will be handled in line with applicable privacy laws.