5 contract senior backend software engineer jobs found

Outside IR35 Backend Software Engineer - MOD/Defence Project, Farnborough, Hybrid, £500-550 per day Contract opportunity for a Back End software engineer for a programme involving LLM. This is for a defence consultancy and security clearance (SC) would be needed prior to engagement. Due to the nature of the role, 1-3 days per week in Farnborough is needed. Key skills required Backed development experience (Mid-senior level) Python Data Pipeline Creation and Management API Creation and Integration Database Creation and Integration Working with JSON If you have worked in a security cleared environment, have the active relevant Security Clearance and skilled with Back End development - please apply.

At Mindera, we craft software with people we love. We’re looking for a Principal Java Engineer with strong Retail experience who can join our crew! Please note: This is a six month contract that sits outside IR35. You will be required to work in Paddington 3 days a week. What does the role involve? Lead technical deep dives and knowledge sharing in the teams, anticipating challenges and proposing solutions Start influencing product and business decisions Hands-on Software Development: Write high-quality Java code using frameworks such as Spring Boot or Micronaut. Build robust services that support secure, high-volume payment transactions. Develop integrations with acquiring banks, payment gateways, and fraud detection tools. Cloud & DevOps Practices: Build and support cloud-native systems on the cloud (preferably Azure) using Terraform and Kubernetes. Manage CI/CD pipelines using GitHub Actions and ensure smooth delivery to production....

Senior Full Stack Engineer (Backend Learning) | Contract Role | JavaScript/Typescript | B2C, Scale-up | Hybrid London | £500pd, Outside IR35 | 6 month Contract, likely extension We are working with a extremely fast growing and well recognised start-up who are looking for 2 Backend Leaning Full Stack Engineers with very strong typescript experience to work towards building out a new product with a rapidly scaling userbase. Urgently hiring for x2 Full stack engineers, experienced required: 6+ years experience working with JavaScript/TypeScript for fast growth product companies. Backend: Typescript, Node, Express, PostgreSQL Experience working with front-end Infrastructure: AWS ClickHouse desirable, but not required. Must have's are: Confidence with performing in Leetcode style interviews (Data Structures and Algorithms) A degree in Computer Science or Software Engineering related Senior Full Stack Engineer (Backend Learning) | Contract Role |...

Principal Software Engineer (React & Java) – Contract Rate: Up to £700/day (Outside IR35) Location: UK Remote / Hybrid (Public Sector) Duration: Initial 6 months Clearance: SC eligible (active not required) Notice: Under 1 month preferred We’re working with a consultancy delivering a large-scale cloud transformation and modernisation programme across a public sector application portfolio. The focus is on modernising legacy systems, enabling cloud-native services, and laying the groundwork for AI and generative capabilities , all within AWS. They’re looking for a Principal-level Software Engineer who can operate as a hands-on technical leader. The Role Lead a small team of contractors (2+ already in place) Drive technical direction across React and Java-based services Hands-on delivery (approx. 80% engineering / 20% leadership ) Own design decisions, code quality, and best practices Contribute to modernisation strategy and cloud-native...

Principal Software Engineer (React & Java) - Contract Rate: Up to £700/day (Outside IR35) Location: UK Remote/Hybrid (Public Sector) Duration: Initial 6 months Clearance: SC eligible (active not required) Notice: Under 1 month preferred We're working with a consultancy delivering a large-scale cloud transformation and modernisation programme across a public sector application portfolio. The focus is on modernising Legacy systems, enabling cloud-native services, and laying the groundwork for AI and generative capabilities , all within AWS. They're looking for a Principal-level Software Engineer who can operate as a hands-on technical leader. The Role Lead a small team of contractors (2+ already in place) Drive technical direction across React and Java-based services Hands-on delivery (approx. 80% engineering/20% leadership ) Own design decisions, code quality, and best practices Contribute to modernisation strategy and cloud-native...