Full stack Engineer

LocationSheffield, UK., United Kingdom# Full stack Engineer at N Consulting LtdLocationSheffield, UK., United KingdomSalary£400 - £500 /dayJob TypeContractDate PostedFebruary 17th, 2026Apply Now Full stack Engineer - Senior API Architect Domain: Payments Banking Technology Cloud Modernization Be part of a newly formed team delivering for payment processing . This role will drive the introduction of a lean, reusable payment processing engine that will power next-generation payment capabilities.You will work within an inner sourcing model, leveraging existing enterprise software assets with a strong focus on reuse, modernization, and enhancement. The goal is to enable rapid delivery of new product features with high quality and cost efficiency. Key ResponsibilitiesDeliver engineering expertise for the building best-in-class payment processing capabilitiesDevelop high-quality, production-ready code with robust test coverageDesign highly available and resilient distributed systemsContribute to design and development within a cross-functional delivery teamLead modernization of payment platforms with cloud-native adoptionProvide architecture guidance aligned with global standardsResolve architectural and development blockersPartner with DevOps teams to implement CI/CD pipelines and DevSecOps practicesEnsure compliance with regulatory, cybersecurity, and data privacy standardsDrive feasibility studies, cost/benefit analysis, and vendor evaluations Technical Expertise Required15+ years of experience as an API Engineer / ArchitectStrong API design expertise with architectural artefacts (LLD, gap analysis, data models)10+ years in backend microservices developmentExpert-level Java (mandatory); exposure to Go and Rust preferredJVM tuning & performance diagnosticsDistributed systems design (Microservices, Spring Boot)Docker, Kubernetes (K8s), Service MeshKafka (cluster configuration + producer/consumer development)Monitoring & Observability: Splunk, Grafana, Prometheus, Jaeger, Kiali, OpenTelemetryCloud & DevOps expertise (VPC, IAM, firewall, sizing & costing)Strong Linux, networking, storage, load balancing knowledgeAdvanced SQL & distributed databasesExperience in Financial Services (Payments domain preferred) Leadership & Soft SkillsSet engineering standards and lead by exampleMentor and coach engineering teamsStrong analytical and problem-solving skillsAbility to influence architectural and technical decisionsExcellent communication and stakeholder management skillsAbility to thrive in fast-paced, evolving environments