Senior Backend Software Engineer - Core Services

Benefits

Parental leave

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Non-birth-parent leave

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Family-building benefits

• Fertility benefits: Not verified
• Adoption assistance: Not verified
• Surrogacy assistance: Not verified

Mental health support

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Relocation assistance

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Childcare support

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Learning budget

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Verification

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Salary

GBP 50K-95K From the posting source checked Jun 20, 2026

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Market context

U.S. role benchmark (BLS OEWS)

$116,543 U.S. median for this role

Projected growth (BLS Employment Projections)

+9.8% - Much faster than average

U.S. benchmark only; posted salary is not compared across countries or currencies.

Matched to SOC 15-1252 - Software Engineering aggregate by role bucket.

Source: U.S. Bureau of Labor Statistics, OEWS, May 2024 and Employment Projections, 2024-2034.

Role

Role function

Engineering From the posting source checked Jun 20, 2026

Seniority

Senior From the posting source checked Jun 20, 2026

Schedule

Shift type

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Weekend work

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Application

Cover letter

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Assessment

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Deadline

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Where they hire

State eligibility is not yet verified.

About this role

Senior Backend Software Engineer - Core Services London, England, United Kingdom About Radiant We're looking for a Senior Software Engineer with strong experience in Golang and Kubernetes to join our core product team. In this role, you'll design and build high-performance, cloud-native back-end systems and scalable APIs to support AI workloads, including LLMs and GPU-based services. You'll collaborate closely with cross-functional teams - including platform and machine learning - to design, develop, and deliver high-quality software solutions. You'll help build tools and services that power model training, inference, and orchestration in production environments, while mentoring junior engineers, upholding engineering best practices, and driving initiatives to improve code quality and system performance. What You'll Do: - Design, develop, and maintain robust applications and services in Go - Implement secure, reliable APIs (gRPC/REST) and backend systems - Work with PostgreSQL or similar relational databases for high-performance querying and storage - Deploy and operate applications in Kubernetes, leveraging Helm charts and the Kubernetes API - Contribute to architectural discussions, providing input on design reviews and system evolution - Maintain high standards for code quality, observability, and maintainability through reviews and best practices What you bring: - Proven experience developing production systems in Golang - Hands-on experience designing and deploying distributed systems and APIs (gRPC, REST) in production environments - Proven ability to improve software quality through unit testing, integration testing, code reviews, and adherence to clean code principles - Deep knowledge of Kubernetes and cloud-native architectures - Hands-on experience with containers, Helm, and

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