Senior Software Engineer - Backend

As a Senior Software Engineer (Backend), you’ll design and build scalable applications, services and platforms across On the Beach.

This is a full-stack engineering position with a stronger emphasis on backend engineering, distributed systems and cloud-native architecture.

Our backend engineers solve a wide variety of problems. You could be working on systems responsible for communicating with external travel suppliers, processing large volumes of hotel inventory and pricing information, powering customer search experiences, or ensuring bookings move reliably through complex transactional workflows.

You’ll work across the development lifecycle and collaborate with engineers, product managers and other technical specialists to design, build, deploy and operate reliable software at scale.

Designing and building scalable backend applications and services

Developing APIs used by customer-facing applications and internal systems

Integrating with external suppliers and third-party platforms

Building systems that process high volumes of requests and data

Designing distributed and event-driven architectures

Working with asynchronous messaging and streaming technologies

Solving problems around performance, latency, resilience and availability

Improving caching and data-access strategies

Building reliable transactional workflows

Developing applications and services within AWS

Deploying and operating containerised applications

Improving monitoring, alerting and observability

Exploring AI-assisted engineering and modern development tooling

At Senior level, you’ll be expected to understand the wider system rather than only the individual service you are working on.

You should be comfortable considering how systems behave in production, identifying failure scenarios and balancing scalability, resilience, maintainability and delivery speed.

We’re looking for strong full-stack engineers whose experience leans towards backend and platform engineering.

Beyond the technologies themselves, we’re looking for someone who:

Can independently solve complex engineering problems

Thinks about the customer and commercial impact of technical decisions

Understands the trade-offs between speed, quality and long-term maintainability

Can contribute meaningfully to technical and architectural discussions

Communicates clearly with both technical and non-technical colleagues

Raises engineering standards through collaboration rather than hierarchy

Helps less experienced engineers develop

Is comfortable working in an environment where priorities and problems can change quickly

After a call with our Talent Acquisition Team, We will run a 3 stage interview process all on Microsoft Teams, Which will consist of: Hiring Manager meet & greet - 30 Minutes Behavioural & ways of working - 60 Minutes Tech Pairing & System Design - 120 Minutes, broken down into two parts (50 minutes each) with a short break and time for your questions at the end.

We want to make sure everybody has the opportunity to perform at their best. If you require any reasonable adjustments during the interview process please let the Talent Acquisition team know and they will be happy to assist.

Ways of working Our full time hours are 37.5 per week, but we don't have rigid working hours so you can find the working pattern that's right for you. We have core working hours between 10am - 4pm, so we can collaborate and enjoy the social side of work.

We also have hybrid working so we all work from home and from our Aeroworks office in Manchester City Centre. We operate a remote-first working model, with colleagues meeting in our Manchester office one day every two weeks. Please note that all applicants must be eligible to work full-time in the UK