4,507 Back End Developer jobs in the United Kingdom
Back End Developer
Posted 6 days ago
Job Viewed
Job Description
Back End Developer
Home-based within the UK
The Organisation
Our client transforms lives by providing practical, emotional and financial support to those experiencing poverty, disadvantage and social isolation.
They’re now looking for a Back End Developer to join them on a full-time, permanent basis, working 37 hours per week.
The Benefits
- Salary of £43,042 per annum (inclusive of £,044 market supplement and 80 home working allowance)
- An annual paid leave entitlement of 30 working days plus bank holidays
- Up to 6% matched-pension contributions
- Flexible working arrangements and new starters have the right to make flexible working requests from day one of employment
- Enhanced paid sick leave and paid family leave provisions
- Eye care and winter flu jabs vouchers
- Cycle to work scheme
- Investing in your professional development with ongoing quality training and career development opportunities
This is a brilliant opportunity for a talented software engineer who’s confident working with Node.js, TypeScript, and PostgreSQL to join a team that values creativity and growth.
You’ll be enabled to keep learning, experiment with new ideas, and use the latest tools and technologies to create innovative solutions that make a real difference to the services our client delivers.
So, if you’re someone who loves solving problems, building elegant solutions and being part of a mission that really matters, read on and apply today!
The Role
As a Back End Developer, you’ll design, build, and run secure, scalable backend services that power web applications and keep things running smoothly behind the scenes at our client’s organisation.
Specifically, you’ll develop APIs and data models, integrate systems and elevate services to ensure they are world-class and contribute to supporting service users.
In this critical role, you’ll develop and maintain REST API over serverless functions using TypeScript; you’ll also design and implement scalable PostgreSQL schemas and data models.
The integrations you’ll be involved with will connect to external services, including video conferencing, messaging, and payment platforms.
Additionally, you’ll support our robust security infrastructure through best practice and work with front-end developers and product managers to deliver cohesive and user-focused solutions.
Occasional travel to our client’s London-based head office and other locations across the UK will be required.
About You
To be considered as a Back End Developer, you’ll need:
- Significant experience developing back-end systems for production applications
- Proven expertise in Node.js and TypeScript, including use within serverless architectures
- Strong experience designing secure, performant APIs and data models
- Experience managing PostgreSQL databases including, schema design and optimisation
The closing date for this role is Sunday 9th November 2025.
Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.
Equality, Diversity & Inclusion:
Our client is happy to consider any reasonable adjustments that candidates may need during the recruitment process and you will be asked whether you require any adjustments if shortlisted for interview. They also make reasonable adjustments on the job, where required.
Our client is committed to Equality, Diversity & Inclusion in all that they do and welcome applications from all sections of the community. Intersectionality is important to them and they particularly welcome applications from ethnically diverse communities, LGBTQIA+ candidates and disabled candidates because they are committed to increasing the representation of these groups. They know that greater diversity will lead to even greater results for families and children and strive for their workforce to be truly representative of the diverse communities they support. They offer a guaranteed interview scheme for disabled applicants who meet the minimum criteria for the role, and will reimburse your travel costs if you attend an interview in person.
So, if you want to join our client as a Back End Developer, please apply via the button shown. This vacancy is being advertised by Webrecruit. The services advertised by Webrecruit are those of an Employment Agency.
Back End Developer
Posted today
Job Viewed
Job Description
Backend Software Engineer
Term: 6 Months
Pay: £888 per day Inside IR35
Location: Kings Cross London Hybrid
Our client see a world in which advanced applications of Machine Learning and AI will allow us to develop novel therapies to existing diseases and to quickly respond to emerging or changing diseases with personalized drugs, driving better outcomes at reduced cost with fewer side effects. It is an ambitious vision that will require the development of products and solutions at the cutting edge of Machine Learning and AI, as well as extensive safety and robustness evaluations. We’re looking for a highly skilled machine learning engineer to help us make this vision a reality.
Competitive candidates will have a track record of writing and shipping quality, well-documented and well-tested software in the AI/ML industry. We are looking for candidates with experience in the field of Responsible AI, preferably for generative AI or language applications. In addition to ML engineering and data science skills, ideal candidates will demonstrate a keen interest in ethical and safety aspects of using AI in drug discovery and the clinic.
The Responsible AI team is built on the principles of ownership, accountability, continuous development, and collaboration. This fixed-term position is a unique opportunity to contribute to the development and evaluation of generative AI for drug discovery in a fast-paced environment, with a focus on impact and in collaboration with a large team. Our leaders will be committed to your career and development from day one.
Key responsibilities
- Back end development for a Python web application
- Integration of AI/ML components with frontend, backend, data and compute infrastructure
- Responsible for high quality software implementations according to best practices, including automated test suites and documentation
- Develop, measure, and monitor key metrics for all tools and services and consistently seek to iterate on and improve them
- Participate in code reviews, continuously improving personal standards as well as the wider team and product
- Liaise with other technical staff and data engineers in the team and across allied teams, to build an end-to-end pipeline consuming other data products
Basic qualifications:
- Demonstrated experience of Python backend development (e.g. using FastAPI)
- Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience
- Cloud experience (e.g. Google Cloud and cloud run preferred) including core web application infrastructure is essential
- Strong skills in Python
- Unit testing experience (e.g. pytest)
- Knowledge of agile practices and able to perform in agile software development environments
- Strong knowledge of modern software development tools / ways of working (e.g. git/GitHub, DevOps tools for deployment) – should be able to show practice of commit early and deploy often
Preferred qualifications:
- Experience with Docker or containerized applications, especially architecture of multi-container applications
- Demonstrated experience with biological or scientific data (e.g. genomics, transcriptomics, proteomics), or pharmaceutical industry experience
- Knowledge of AI/ML approaches and deployment of AI/ML powered applications – especially using language models or NLP and agent-based approaches (e.g. LangGraph, PydanticAI, AutoGen)
- Knowledge of AI/ML evaluation and benchmarking approaches, experience with iterative improvement of AI/ML models and products
- Some experience with frontend software development (e.g. React)
Back End Developer
Posted today
Job Viewed
Job Description
Title:
Backend Developer
Salary:
up to £80,000 + share options
Location:
Fully remote (UK)
Sector:
Cybersecurity SaaS
We're supporting a high-growth cyber SaaS scale-up on the hire of a Backend Developer to own production APIs and serverless microservices. You'll work with senior engineers to design, build and operate secure, reliable services that protect users in real time.
What you'll do
- Design, develop and secure RESTful APIs and serverless microservices (AWS).
- Optimise data access across MySQL/RDS and NoSQL (DynamoDB); write efficient queries.
- Automate deployments (CI/CD), add observability, and ship with high quality.
- Collaborate on architecture, testing and documentation; contribute across the full lifecycle.
What you'll bring
- 3+ years' commercial engineering.
- Hands-on AWS Serverless (Lambda, API Gateway, CloudWatch) and microservices.
- Experience with AWS Amplify.
- Strong API security (OAuth/JWT) and SQL/MySQL query optimisation.
- Version control with Git and modern team workflows.
Why apply
- Up to £80k base + share options.
- 25 days' holiday + bank holidays & your birthday off.
- Private healthcare (24/7 GP & mental health), pension, eye-care support.
- Fully remote (UK); learn from senior engineers; clear growth path.
If you enjoy solving real-world problems, want to work with modern tech, and like the idea of being part of a mission-driven team, this could be the role for you.
Click "Apply" now or reach out to to discuss the role in more detail.
Back End Developer
Posted 3 days ago
Job Viewed
Job Description
️ Back End Developer
Hybrid | West Sussex | Full-time
About Viewture
At Viewture, we connect content creators and investment through data, technology, and finance.
We help creators scale, monetise their content, and maximise returns for both themselves and investors — all powered by our proprietary tech platform.
We’re now looking for a Back End Developer who’s passionate about building scalable systems, optimising performance, and bringing great ideas to life through clean, reliable code.
The Role
You’ll design and maintain high-performance APIs, build data pipelines in Azure, and help evolve the backbone of our creator platform.
What you’ll do:
- Design, develop, and maintain RESTful APIs & microservices
- Optimise database performance (Azure SQL / SQL Server)
- Implement secure authentication (OAuth2 / SSO)
- Develop data processing pipelines using Azure services
- Collaborate with DevOps on CI/CD and monitoring
- Troubleshoot production issues and improve reliability
- Mentor junior developers and maintain technical documentation
Back End Developer
Posted 4 days ago
Job Viewed
Job Description
Go Backend Engineer (Data Platform & APIs) - Northern Ireland (Remote-first)
* Salary: £75,000-£150,000 + bonus + benefits
About the Company:
Our client is scaling an ML-driven data and analytics platform and modernizing their engineering standards. Their current stack includes Python, GoLang, TensorFlow, PyTorch, AWS, and Kubernetes , with a focus on building scalable, ML-driven data and analytics platforms. They are planning to hire 5-7 engineers right now with further expansion in 2026 and building a high-impact team in Northern Ireland.
The Role:
You'll build robust backend services in Go that power both the data platform (data lake, pipelines, model serving) and product-facing APIs . You'll collaborate with Data Science (leaders, DS, ML engineers, data engineers) to standardize tooling, operationalize models, and ship reliable APIs at scale. This role suits engineers who enjoy clear ownership, modern cloud infrastructure, and working at the intersection of Go + ML platforms .
What You'll Do:
Platform & ML Enablement
* Design and implement Go services for data ingestion, transformation, and orchestration on AWS & Kubernetes
* Integrate with Python-based ML services (TensorFlow/PyTorch), enabling model training, evaluation, and real-time/batch inference
* Help standardize frameworks, libraries, and best practices across DS/Eng (packaging, environments, CI/CD, testing)
* Contribute to the data lake/data platform foundations (catalog, lineage, governance, access patterns)
Backend APIs & Services
* Build and evolve gRPC/REST APIs powering customer-facing features and internal platforms
* Implement event-driven components (queues/streams) and caching to meet latency and throughput SLOs
* Add observability (metrics, logs, traces), performance profiling, and production readiness
* Collaborate with product, DS, and frontend on API shape, contracts, and release cadence
Essential Criteria:
* 3+ years' backend experience (2+ in Go ) building production services
* Solid grasp of concurrency, distributed systems, and networking fundamentals
* Ideally Hands-on with AWS (IAM, ECS/EKS, S3, RDS/DynamoDB, networking) and Kubernetes
* Experience designing REST/gRPC APIs; protobuf/OpenAPI familiarity
* Proficiency with SQL (Postgres/MySQL) and a NoSQL/Key-Value store (e.g., DynamoDB/Redis)
* CI/CD (GitHub Actions/GitLab/CircleCI), automated testing, and containerization (Docker )
* Demonstrated work in a commercial setting with data-intensive or ML-adjacent systems (e.g., pipelines, model serving, feature stores, analytics workloads)
Nice to Have:
* Experience integrating Python ML services (TF/torch), feature stores, or model registries
* Event streaming & messaging (Kafka, Kinesis, NATS, SQS, Pub/Sub)
* Observability stacks (OpenTelemetry, Prometheus, Grafana)
* IaC (Terraform), security-by-design, OAuth/OIDC, secrets management
* Batch & streaming data processing (Spark/Flink/Beam) or columnar analytics (Parquet/Arrow)
Career Paths (we're hiring multiple profiles):
* Go Backend (API-first): Own product APIs, performance, reliability.
* Go Platform (ML-first): Focus on data lake, pipelines, model serving.
* Hybrid: Split time across APIs and ML platform enablement.
* Growth routes to Senior or Tech Lead as the NI team scales.
Why Join:
* Shape a greenfield data/ML platform and raise the engineering bar with standard frameworks
* Real ownership: design → build → run for systems that matter to customers
* Remote-first with strong investment in building a Hub/R+D site in Belfast.
* Competitive package, modern tooling, and a path to leadership as the team expands
How to Apply:
If you believe you meet the criteria for this role and are excited about the opportunity to join our team, please apply via this link. Alternatively, you can reach out to Phil Gamble directly for an informal chat via LinkedIn or WhatsApp.
About Phil Gamble:
Phil Gamble has over 20 years of experience in the Tech recruitment industry, successfully delivering on challenging IT recruitment campaigns in global IT software companies in the US, UK, and Ireland. He takes a personalized approach to understanding candidates and has garnered praise for his professionalism and dedication to their career goals.
Recent LinkedIn Testimonials:
"I cannot recommend Phil and Ocho enough.Phil is a professional who does not treat his candidates as resources."
"Phil was by far the best recruiter I have ever dealt with.I wouldn't hesitate to recommend Phil to my friends or colleagues."
"Phil has helped me find new roles more than once.Phil takes the time to understand what it is I'm looking for."
Back End Developer
Posted 4 days ago
Job Viewed
Job Description
We're a UK based, profitable and fast growing company that began as a small bootstrapped AI startup in 2023. Nowadays, we're a relatively small team (10) of talented individuals located in London, Brighton and Bratislava.
In a period of significant growth, we're looking for another talented engineer to help us scale further and allow the company to help even more job seekers save time by automating job applications and building tools they love using.
We’re hiring a backend developer to join our Auto-Apply team.
This team is building a system that automatically finds the best jobs for users, fills out applications on their behalf, and lets them approve or reject jobs directly from their dashboard.
- Build and maintain automation for job application flows across multiple ATS systems
- Add new integrations so we can support more users and more job platforms
- Work on the backend services that power job search, matching, and application submission
- Collaborate closely with the frontend and product teams to deliver fast, reliable user experiences
- Write clean, maintainable code and contribute to system design discussions
- Help improve the performance and scalability of our job search and application engine
- Auto-Apply: Playwright, Python, FastAPI, Meilisearch
- Main web backend: Laravel (PHP), Vue.js
- Strong backend development skills (Python or PHP experience preferred)
- Comfortable working with APIs, integrations, and external systems
- Familiarity with Playwright or browser automation is a big plus
- Solid understanding of web technologies and modern backend frameworks
- Proven ability to work independently, you take ownership, figure things out, and don’t need constant hand-holding
- You thrive in a team of A-players where speed, precision, and reliability matter
- Join a fast-growing UK-based company with a global user base
- Be part of a profitable and sustainable business, not a burn-and-churn startup
- Work on critical systems that power the core of the product, your code will have real impact from day one
- Learn fast and grow quickly by taking ownership of challenging, high-leverage problems
- Small, high-performing team, direct communication, no bureaucracy
- Regular team meetups every few months in England, Slovakia, or other European capitals. A chance to align, build, and have a good time together
AI Apply is on a mission to make job applications effortless using the power of AI and automation. We help candidates stand out and get hired faster by streamlining the application process—from CVs to cover letters to full job submissions—in just a few clicks. Backed by real user growth and built by a fast-moving team, we’re one of the fastest-growing startups in the region. With a lean, hands-on approach and a strong focus on data, we’re redefining how people get hired. We’re remote-friendly, Europe-based, and building a team of smart, kind people who want to create something meaningful—together.
Back End Developer
Posted 6 days ago
Job Viewed
Job Description
Job Title: BackEnd Technical Support Developer
Location: London, UK
Work Pattern: Hybrid – 3 days onsite, 2 working from home
Salary: up to £50,000 per annum + on call bonus
Job Position: Permanent
Additional Info: This position does require you to be on call every 5th week (extra pay on top of your salary)
We are looking for a dedicated BackEnd Technical Support Developer to help handle production issues. This includes working with the company’s clients and customer success team to identify the source of a technical problem and then fixing those problems.
This role covers a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this is a great opportunity to learn and expand all those skills.
What we’re looking for from a Back End Developer:
- The right candidate needs to be hungry to learn, a good problem solver and can prioritise what is important and get it done.
- It is very much a role that is a combination of a digital detection and a problem solving.
- It requires getting to know the client’s needs, the company’s platform features and technologies from the ground up.
Experience needed as a Back End Developer:
- 3+ years of Node.js development
- Type Script/Strong JavaScript skills
- React
- REST API development
- SQL
- Git
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Back End Developer
Posted 6 days ago
Job Viewed
Job Description
Role: Back End Engineer (Python)
Location: London (Hybrid)
Inara are excited to be partnered with a pioneering AI ScaleUp, where they have built a platform that uses AI to transform how organisations tackle inefficiencies and scale their operations. Now we’re looking for a Backend & Integrations Engineer to help us bring that vision to life.
This isn’t just another backend role, you’ll be hands-on with Python, APIs, and system integrations , while also championing the use of AI tools in day-to-day engineering. Think of it as coding meets next-gen automation.
The role will be:
- Designing and refining backend services that power our SaaS apps.
- Developing integrations with external APIs and systems.
- Taking automation-generated code and making it production-ready.
- Embedding AI capabilities into workflows with strong safeguards and monitoring.
- Helping the team get the most from AI-assisted development.
- Partnering with product, data, and platform teams to deliver impactful features.
You will need:
- Solid Python skills and confidence working with APIs and databases.
- Hands-on experience with integrations (APIs, file transfers, webhooks).
- Familiarity with workflow orchestration tools (e.g. Temporal, Dagster).
- Comfortable working with AI-driven coding tools and automated code generation.
- Knowledge of CI/CD pipelines, containerisation (Docker), and cloud platforms (AWS/Azure/GCP).
- A curious mindset and enthusiasm for raising the team’s AI skills.
If you’re excited by the idea of blending backend engineering with AI-powered development, we’d love to hear from you.
Back End Developer
Posted 6 days ago
Job Viewed
Job Description
Title: Node.js Backend Developer
Salary: up to £80,000 + share options
Location: Fully remote (UK)
Sector: Cybersecurity SaaS
We’re supporting a high-growth cyber SaaS scale-up on the hire of a Node.js Backend Developer to own production APIs and serverless microservices. You’ll work with senior engineers to design, build and operate secure, reliable services that protect users in real time.
What you’ll do
- Design, develop and secure RESTful APIs and serverless microservices (AWS).
- Optimise data access across MySQL/RDS and NoSQL (DynamoDB); write efficient queries.
- Automate deployments (CI/CD), add observability, and ship with high quality.
- Collaborate on architecture, testing and documentation; contribute across the full lifecycle.
What you’ll bring
- 3+ years’ commercial Node.js engineering.
- Hands-on AWS Serverless (Lambda, API Gateway, CloudWatch) and microservices.
- Experience with AWS Amplify.
- Strong API security (OAuth/JWT) and SQL/MySQL query optimisation.
- Version control with Git and modern team workflows.
Why apply
- Up to £80k base + share options.
- 25 days’ holiday + bank holidays & your birthday off.
- Private healthcare (24/7 GP & mental health), pension, eye-care support.
- Fully remote (UK); learn from senior engineers; clear growth path.
If you enjoy solving real-world problems, want to work with modern tech, and like the idea of being part of a mission-driven team, this could be the role for you.
Click "Apply" now or reach out to to discuss the role in more detail.
Back End Developer
Posted 6 days ago
Job Viewed
Job Description
Backend Engineer - Gen AI
- Backend development – building and maintaining Python-based web applications.
- Generative AI & LLMs – understanding and working with large language models (LLM) and GenAI datasets. Also integrating ML into applications.
- Cloud infrastructure – experience with Google Cloud (Cloud Run preferred) and core web app infrastructure.
- DevOps tools – familiarity with Git/GitHub, CI/CD, and deployment practices - I wouldn't put that in search string however look out for the tech stack
- NLP & agent-based frameworks – knowledge of LangGraph, PydanticAI, AutoGen, etc.
Please apply to the advert for more information.