Backend Developer Jobs

Senior Full Stack Developer Internal Title: Software Engineering Senior Consultant Location: London, UK (Hybrid - typically 1-2 days per month in office) Contract: Permanent, Full-time Package (perm): £70,000 - £85,000 10% Bonus 10% Shares Benefits (see more below) About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve deve...

Python Developer | Wireshark | Network Automation 6-Month Contract | £580 per Day Inside IR35 | Hybrid - 2 Days Onsite, North London We are looking for an experienced Python Backend Developer to join an exciting 6-month contract, working on a specialist project focused on Wireshark automation, network sniffing, packet capturing and backend application development . The successful contractor will play a key role in de...

About Us: Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple: safeguard the...

POSITION DETAILS: Position Title: Lead Software Developer Team: Engineering Department: Technology BYTES: Established in 1982, Bytes has grown rapidly and now employs over 800 people across 6 locations in the UK and Ireland. Our turnover in Financial Year 2024 was in excess of £2bn. We work with SME’s, corporates and public sector organisations to modernise and digitally transform their IT infrastructures. We invest ...

About Vintage.com At Vintage.com, we’re building the most trusted platform for pre-loved items. We help people give valuable things a new life, making the experience simple, transparent and rewarding. We bring together specialist knowledge, thoughtful technology and genuine care for our customers. By helping more items stay in circulation, we create value for people and make a positive impact at the same time. About ...

About Threecolts Threecolts is a software suite built for consumer brands, helping them recover revenue, operate more efficiently and grow across major retailers and marketplaces. Our largest business, Margin Pro, helps brands recover money owed to them by retailers and marketplaces such as Amazon, Walmart and Target by managing disputes on their behalf. Alongside this, we’re building and scaling newer products, incl...

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are r...

The ideal candidate will have good experience in web application UI development, developing backend microservices, and event-based architecture. We are happy to meet developers with a particular interest in a subset of the whole stack but as a cross-functional team we need you to have working knowledge of the whole stack. We have a microservice web application we use to manage an array of our front and middle office ...

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200 public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trus...

We are looking for a Backend Developer to join our HCM Localisation engineering team and help evolve a large-scale, cloud-based enterprise product. This role is focused on building and maintaining scalable backend services supporting complex product workflows, integrations, performance improvements, and ongoing platform modernisation. Please note: This is a hybrid role requiring 3 days per week in our Newcastle or Lo...

We are looking for a Senior Backend Developer to join our HCM Localisation engineering team and help evolve a large-scale, cloud-based enterprise product. This role is focused on building and maintaining scalable backend services supporting complex product workflows, integrations, performance improvements, and ongoing platform modernisation. Please note: This is a hybrid role requiring 3 days per week in our Newcastl...

Belfast, Northern Ireland Full time R14901 About Us: Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI work...

_Please note that we operate a hybrid working model and this role will require you to work from our offices in Oeiras at least 2 days a week._ Meet the Team Cisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network-even those they don't own. Powered by AI and an unmatched set of cloud, internet, and enterprise network telemet...

I'm currently working on an exciting Full Stack Engineering contract with one of the world's leading online travel platforms and thought it could be of interest given your background. The Opportunity Role: Full Stack Engineer Rate: £550 per day Location: Manchester (2 days onsite) Contract: Inside IR35 (Umbrella) Tech Stack: React, TypeScript, Java, AWS, Micro Frontends, BFF Architecture Focus: AI-assisted software d...

YAGRO Ltd are seeking a Mid Software Engineer with strong Python and TypeScript skills and practical experience integrating AI into production applications. The role is responsible for building and maintaining enterprise Software as a Service (SaaS) and white label technology solutions for agri-food enterprises. Working alongside senior engineers, you will take ownership of development tasks, contribute across the st...

Salary: £50,000 - 60,000 per year Requirements: Commercial experience with TypeScript, Node.js, APIs and distributed systems Understanding of cloud-based development Interest in AI-assisted development and improving productivity while maintaining engineering quality Experience with Google Cloud, Kubernetes, Terraform, Pub/Sub or C# is beneficial but not essential Ability to take ownership, solve technical problems an...

Salary: £60,000 - 60,000 per year Requirements: Commercial experience with TypeScript, Node.js, APIs and distributed systems Understanding of cloud-based development Interest in AI-assisted development and improving productivity without compromising engineering quality Ability to take ownership, work independently and collaborate with a team Experience with Google Cloud, Kubernetes, Terraform, Pub/Sub or C# is benefi...

Salary: £? - ? per year Requirements: Strong commercial experience in Python backend development, scripting, and automation Experience designing and developing REST APIs and backend applications Strong understanding of networking fundamentals, including TCP/IP, DNS, HTTP/HTTPS, and network communications Knowledge of network sniffing, packet capturing, and network traffic analysis Experience integrating command-line ...

Salary: £70,000 - 75,000 per year Requirements: Strong C# and modern .NET development, including ASP.NET Core Web APIs and backend services Azure development experience, including Azure Functions Experience with REST APIs, HTTP, JSON, OpenAPI/Swagger and webhooks Knowledge of integration patterns, including authentication, pagination, rate limits, retries and exception handling Experience with Microsoft Entra ID, OAu...

Python Engineer / Data Engineer - SC Cleared New Permanent Opportunity for an SC Cleared Python Engineer / Data Engineer with a leading Public Sector Consultancy Location : Cardiff - hybrid working model Salary : Up to £50,000 DOE Clearance : Active SC required to start Type : Permanent Experience : Python, AWS/Azure/GCP, Git, CI/CD, SQL, ETL/Data Pipelines, IaC Role Opportunity I'm currently working with a leading p...

Software Engineer - eDV Cleared New Opportunity in Manchester for Backend Developers who want to work on mission-critical, operational projects Can be based in Manchester, Bury, Harrogate Up to £75,000 Benefits Clearance bonus company bonus To apply, email: [email protected] or call: 07704 152 640 Are you ready to work on some of the UK's most critical Defence & National Security programmes? We're growing our ...

Software Engineer - eDV Cleared New Opportunity in Cheltenham for Backend Developers who want to work on mission-critical, operational projects Can be based in Cheltenham, Bristol, Gloucester Up to £75,000 Benefits Clearance bonus company bonus To apply, email: [email protected] or call: 07704 152 640 Are you ready to work on some of the UK's most critical Defence & National Security programmes? We're growing ...

Contract Java Developer - Enhanced DV Cleared New Contract Opportunity for a Java Software Developer in Cheltenham with eDV Clearance * New contract opportunity working on highly secure operational systems within the National Security domain * Enhanced DV (eDV) Clearance required for access to high-side systems * Cheltenham based - 3 days per week on-site * 24 month contract * Daily rate up to £700 DOE * To apply ple...

Python Engineer / Data Engineer - SC Cleared New Permanent Opportunity for an SC Cleared Python Engineer / Data Engineer with a leading Public Sector Consultancy Location : London - hybrid working model Salary : Up to £50,000 DOE Clearance : Active SC required to start Type : Permanent Experience : Python, AWS/Azure/GCP, Git, CI/CD, SQL, ETL/Data Pipelines, IaC Role Opportunity I'm currently working with a leading pu...

Python Engineer / Data Engineer - SC Cleared New Permanent Opportunity for an SC Cleared Python Engineer / Data Engineer with a leading Public Sector Consultancy Location : Manchester - hybrid working model Salary : Up to £50,000 DOE Clearance : Active SC required to start Type : Permanent Experience : Python, AWS/Azure/GCP, Git, CI/CD, SQL, ETL/Data Pipelines, IaC Role Opportunity I'm currently working with a leadin...