Senior Backend Engineer - AWS, C# / .NET

On the Beach Group plc; Manchester; Hybrid; GBP 61,000 - 93,000; Full time

Benefits offered by this job

Remote-first hybrid work Model

25 days holiday

Birthday off

Learning and development support

Wellbeing benefits

Company sick pay

Job summary

On the Beach Group plc is seeking a senior backend software engineer to design and build scalable backend services and APIs for customer-facing applications and internal systems.

You'll work with AWS, Docker, Kubernetes, and data stores (SQL/NoSQL) to deliver high-performance, resilient systems at scale, with a remote-first hybrid setup and in-person collaboration at the Manchester office on a bi-weekly cadence.

Qualifications

• Strong commercial backend software engineering experience.
• C# and .NET or comparable experience building modern backend applications.
• Experience designing and developing APIs.
• Experience building distributed systems and service-oriented architectures.
• Experience developing cloud-native applications, ideally within AWS.
• Experience working with messaging, asynchronous processing, or event-driven architecture.
• Experience designing reliable integrations with external or internal systems.
• Experience with SQL and/or NoSQL data stores.
• Experience building scalable systems handling significant traffic or data volumes.
• Experience with performance optimisation, caching, and latency reduction.
• Experience designing for resilience and failure.
• Experience with containerisation and orchestration technologies such as Docker and Kubernetes.
• Experience with observability, monitoring, and operating production systems.
• Experience with automated testing and modern engineering practices.
• Strong engineering fundamentals and evidence of solving comparable problems at scale.
• Ability to independently solve complex engineering problems.
• Ability to think about customer and commercial impact of technical decisions.
• Understanding of trade-offs between speed, quality, and long-term maintainability.
• Ability to contribute meaningfully to technical and architectural discussions.
• Strong communication skills with both technical and non-technical colleagues.
• Ability to raise engineering standards through collaboration.
• Ability to help less experienced engineers develop.
• Comfort working in an environment where priorities and problems can change quickly.
• Eligible to work full-time in the UK.

Responsibilities

• Design and build scalable backend applications and services.
• Develop APIs used by customer-facing applications and internal systems.
• Integrate with external suppliers and third-party platforms.
• Build systems that process high volumes of requests and data.
• Design distributed and event-driven architectures.
• Work with asynchronous messaging and streaming technologies.
• Solve problems around performance, latency, resilience, and availability.
• Improve caching and data-access strategies.
• Build reliable transactional workflows.
• Develop applications and services within AWS.
• Deploy and operate containerised applications.
• Improve monitoring, alerting, and observability.
• Explore AI-assisted engineering and modern development tooling.
• Collaborate with engineers, product managers, and other technical specialists to design, build, deploy, and operate reliable software at scale.
• Consider how systems behave in production and identify failure scenarios.

Skills

C#

.NET

APIs

Distributed systems

AWS

Messaging

SQL/NoSQL

Performance optimization

Caching

Resilience

Docker

Kubernetes

Observability

Automated testing

CI/CD

Engineering collaboration

Tools

ASP.NET

Job description

On the Beach Group plc is seeking a senior backend software engineer to design and build scalable backend services and APIs for customer-facing applications and internal systems.

You'll work with AWS, Docker, Kubernetes, and data stores (SQL/NoSQL) to deliver high-performance, resilient systems at scale, with a remote-first hybrid setup and in-person collaboration at the Manchester office on a bi-weekly cadence.