Senior Software Engineer - Backend - Manchester

Salary: £61,000 - 93,000 per yearRequirements:Strong commercial backend software engineering experienceC# and .NET or comparable experience building modern backend applicationsExperience designing and developing APIsExperience building distributed systems and service-oriented architecturesExperience developing cloud-native applications, ideally within AWSExperience working with messaging, asynchronous processing, or event-driven architectureExperience designing reliable integrations with external or internal systemsExperience with SQL and/or NoSQL data storesExperience building scalable systems handling significant traffic or data volumesExperience with performance optimisation, caching, and latency reductionExperience designing for resilience and failureExperience with containerisation and orchestration technologies such as Docker and KubernetesExperience with observability, monitoring, and operating production systemsExperience with automated testing and modern engineering practicesStrong engineering fundamentals and evidence of solving comparable problems at scaleAbility to independently solve complex engineering problemsAbility to think about customer and commercial impact of technical decisionsUnderstanding of trade-offs between speed, quality, and long-term maintainabilityAbility to contribute meaningfully to technical and architectural discussionsStrong communication skills with both technical and non-technical colleaguesAbility to raise engineering standards through collaborationAbility to help less experienced engineers developComfort working in an environment where priorities and problems can change quicklyEligible to work full-time in the UKResponsibilities:Design and build scalable backend applications and servicesDevelop APIs used by customer-facing applications and internal systemsIntegrate with external suppliers and third-party platformsBuild systems that process high volumes of requests and dataDesign distributed and event-driven architecturesWork with asynchronous messaging and streaming technologiesSolve problems around performance, latency, resilience, and availabilityImprove caching and data-access strategiesBuild reliable transactional workflowsDevelop applications and services within AWSDeploy and operate containerised applicationsImprove monitoring, alerting, and observabilityExplore AI-assisted engineering and modern development toolingCollaborate with engineers, product managers, and other technical specialists to design, build, deploy, and operate reliable software at scaleConsider how systems behave in production and identify failure scenariosTechnologies:AIAWSBackendC#CloudDockerSupportKubernetesLESSNoSQLSQLASP.NETDevOpsMore:Were On the Beach, and since 2003 weve been rewriting the rules of how people discover, book, and experience their perfect getaway. Weve grown from short-haul beach holidays into premium beach destinations, long-haul adventures, and vibrant city breaks, sending around two million holidaymakers on their dream breaks every year. Were powered by entrepreneurial spirit, proprietary tech, curiosity, and our incredible people, and were building the future of travel with best-in-class technology and a holiday app that keeps customers coming back. We offer a remote-first hybrid working model with core hours of 10am to 4pm, and we meet in our Manchester City Centre Aeroworks office one day every two weeks. Our Beach Perks benefits include 25 days holiday plus your birthday off, holiday discounts, learning and development support, enhanced family leave, wellbeing and health benefits, company sick pay, social events, and more.last updated 36 week of 2026

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