Top Software Engineer Jobs in Manchester

Build and maintain scalable, reliable agentic AI systems for biomedical research, integrating LLMs, tool-calling, and data platforms. Drive technical decisions, optimize analytical workflows, deploy agents on the data platform, mentor teammates, and participate in on-call rotation to ensure performance, security, and continuous improvement.

Develop scalable full-stack web applications, backend services, APIs, and AI-powered features for Roku’s advertising platform. Build RAG chatbot solutions, optimize distributed systems, write tests, support CI/CD, improve delivery processes, and deploy customer-facing features. Collaborate with UX, engineering, DevOps, QA, and product teams while solving complex reliability and performance challenges. The role requires modern web development, cloud platforms, AI-assisted engineering workflows, and strong software architecture practices.

Develop and deliver scalable, highly available software services, APIs, and middle-tier components within a cross-functional Agile team. The role involves architectural design, non-functional requirements, CI/CD, testing, cloud deployment, containerization, mentoring engineers, and continuous improvement. Candidates will work across the technology stack using C#, .NET Core, modern JavaScript frameworks, AWS, databases, messaging technologies, and RESTful APIs in an investment platform environment.

Lead a software engineering team delivering critical infrastructure across the full software development lifecycle. Responsibilities include owning team deliverables, requirements analysis, design, implementation, testing, deployment, collaboration with product, frontend, and QA teams, and mentoring junior developers. The role requires Java backend or React frontend expertise, scalable system development, and familiarity with CI/CD, containers, deployment technologies, and AWS.

Own and develop Unity’s Web runtime, optimizing build size, download, startup, and loading performance. Design and implement low-level improvements across C++, C#, JavaScript, WebAssembly, Emscripten, and LLVM, including multi-threading and progressive asset loading. Collaborate with platform teams, profile and debug across native and browser boundaries, mentor engineers, and establish code quality standards.

Design, build, and operate resilient Java and Spring Boot backend services for inventory availability, order promising, and fulfillment. Develop event-driven Kafka integrations, concurrency and consistency controls, caching strategies, observability, and graceful degradation mechanisms. Own services from design through production, optimize performance and reliability, integrate with commerce and enterprise platforms, conduct code reviews, document architecture decisions, and mentor junior engineers.

Own quality strategy, automated testing, and test execution for omnichannel commerce capabilities. Build scalable API, integration, contract, event-driven, and end-to-end test frameworks; manage complex test data; integrate quality gates and regression testing into CI/CD pipelines; define quality metrics; validate order, inventory, fulfillment, returns, and post-purchase workflows; and mentor engineers on quality practices and automation.

Design, build and maintain scalable, secure backend systems using Java and the Spring ecosystem. Lead architecture and API design, ensure quality through testing and observability, mentor engineers, drive delivery across initiatives, evaluate emerging technologies and AI capabilities, and collaborate with cross-functional teams to deliver client value.

Own technical direction and hands-on execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; lead architecture decisions; solve production problems; improve testing, security, observability, and development practices; and mentor engineers across teams.

Lead technical direction and hands-on execution for major products, systems, and engineering initiatives. Design scalable and reliable backend, frontend, API, database, and infrastructure solutions; write code; make architecture trade-offs; solve production problems; improve testing, security, observability, and development practices; and mentor engineers across teams.

Own technical direction and hands-on execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; lead architecture decisions; solve production issues; improve engineering quality, testing, security, and observability; and mentor engineers across teams.

Own, build and maintain scalable Loyalty platform services for Sparks. Deliver end-to-end features from design to deployment, improve developer experience, and support live services with reliability, observability, and operational excellence across distributed, cloud-native systems.

Design, develop, maintain, and review software for mission-critical systems. Contribute hands-on code, design product features, break down work for Agile delivery, maintain CI/CD pipelines, and demonstrate solutions to customers. The role also involves technical leadership, guiding engineers through development and delivery challenges, and working across backend or frontend technologies, cloud platforms, containerization, and databases.

Build and scale production inference infrastructure and customer-facing APIs for AssemblyAI’s voice AI models. Partner with researchers and applied engineers to productionize model capabilities, transforming prototypes into reliable, low-latency, well-documented products. Contribute across backend services, SDKs, inference systems, and internal tooling while incorporating customer feedback into product and research direction.

Ownership of backend Loyalty platform services: design, build, deploy, monitor and optimise scalable, distributed systems. Collaborate across teams to shape technical direction, improve developer experience, and maintain reliability, observability and operational excellence for customer-facing Sparks journeys.

Deploys, supports, and improves software products and services while maintaining customer satisfaction and SLA performance. Responsibilities include investigating and resolving tickets, managing delivery requirements, preparing estimates and quotes, coordinating with development teams, identifying product and support improvements, managing risks, protecting customer information, and adhering to GDPR and information security requirements. The role is primarily remote with occasional travel to Leicester offices and customer sites.

Lead the design and implementation of core authentication infrastructure at Phantom, focusing on secure authentication systems, secrets management, and API integrations.

As a Software Engineer - L3 Support, you will resolve complex Ubuntu-related issues, collaborate with teams, and participate in upstream communities to drive bug fixes and improvements.

As a Software Engineer, you will resolve complex customer issues related to Ubuntu and open source software, participate in upstream communities, and develop and review code across multiple layers of the software stack.

Develop and maintain enterprise applications using Camunda BPMN, Java and Spring Boot. Implement front-end features with Angular/Vue/React, integrate microservices, use source control and IDEs, write documented and tested code, and work independently in cloud-based environments. Containerization and orchestration (Docker/Kubernetes) are advantageous.

Lead development of Runware’s AI platform, including scalable backend APIs, SDKs, developer tools, and inference orchestration systems. Design high-performance distributed architectures, optimize image and video model integrations, improve reliability and observability, shape technical direction, and mentor engineers. Collaborate across platform, infrastructure, and product teams to deliver robust developer experiences and maintainable systems.

Lead the architecture and hands-on development of reliable AI-powered email applications across backend, mobile, and desktop platforms. Design orchestration, state management, tool use, retries, fallbacks, and failure handling for long-running workflows. Build production APIs, improve observability and reliability, make trade-offs involving latency, cost, security, and user experience, and lead a small senior engineering team through technical reviews, mentorship, and execution.

Leads application engineering for an AI-powered email product across backend, mobile, and desktop platforms. Designs reliable AI workflows involving orchestration, state, tool use, retries, fallbacks, and failure handling. Builds APIs connecting AI capabilities to product experiences, makes architectural trade-offs, establishes observability and operational excellence, and leads a small senior engineering team through mentorship, design reviews, and code reviews. Partners with ML leadership to deliver scalable, reliable, and maintainable production systems.

Lead application engineering for an AI-powered email product across backend, mobile, and desktop platforms. Design reliable AI workflows involving orchestration, state, tool use, retries, fallbacks, and failure handling. Build APIs connecting AI systems to product experiences, make architecture and scalability decisions, mentor senior engineers, and establish strong observability, monitoring, testing, security, and operational practices. Partner with ML leadership to ship fast, reliable, maintainable product experiences.

Lead design and delivery of scalable, secure payment platform capabilities across stores and digital channels. Own end-to-end payment product outcomes, ensure reliability, security and performance, implement SRE/DevOps and CI/CD practices, drive observability and incident management, shape architecture, mentor engineers and promote engineering excellence.