Software Engineer – Java, Python, React, MongoDB

Location: Flexible/Hybrid
Contract Type: Permanent or Contract
Level: SFIA Level 4-5 (Enable / Ensure & Advise)

Must go through eDV

About the Role

We’re looking for a versatile Software Engineer with strong experience across Java, Python, React, and MongoDB to join a high-performing engineering team. You will work across the full development lifecycle, contributing to the design, build, and delivery of high-quality software solutions. The role requires strong technical expertise, proactive problem-solving, and the ability to collaborate effectively in multidisciplinary teams.

Key Responsibilities

• Design, develop, test, and deploy high-quality software solutions using Java, Python, React, and MongoDB.
• Participate in solution design, estimation, and technical decision-making.
• Develop reusable components and shared services.
• Work within Agile teams to support sprint planning, refinement, and retrospectives.
• Ensure code quality through reviews, automated testing, and engineering best practice.
• Maintain and improve CI/CD pipelines and deployment processes.
• Troubleshoot, debug, and optimise performance across services.
• Collaborate with product, UX, DevOps, and QA to deliver reliable, maintainable systems.
• Produce and maintain documentation and contribute to knowledge sharing.

Essential Skills & Experience

• Strong commercial experience with Java and Python.
• Front-end engineering experience using React and JavaScript
• Solid hands-on experience with MongoDB including data modelling and performance tuning.
• Proficient with CI/CD, Git, automated testing, and modern engineering workflows.
• Experience delivering within Agile environments.
• Ability to work at SFIA Levels 4-5, demonstrating:
  • Level 4: Ownership of deliverables, specialist knowledge application, resolving defined problems.
  • Level 5: Leading technical work, assuring quality, advising others, shaping technical solutions.

Beneficial Skills

• Ansible for automation and configuration management.
• Kubernetes for container orchestration.
• Experience with microservices, API design, event-driven systems.
• Understanding of Docker, cloud platforms (AWS/Azure/GCP), and observability tools.

Personal Attributes

• Strong analytical and problem-solving skills.
• Clear communicator with varied audiences.
• Proactive, collaborative, and delivery-focused.
• Enthusiastic about continuous learning and improving engineering practice.

What We Offer

• The opportunity to join a high-performing, modern engineering team with a strong culture of quality and innovation.
• Flexible working arrangements and work-life balance.
• Professional development aligned with SFIA.
• Bonus Structure: A performance-linked bonus based on utilisation, delivery outcomes, and contribution to project success.
• EOT Transition: The company is transitioning to an Employee Ownership Trust (EOT) model, giving employees a meaningful stake in long-term success and enhanced shared-reward opportunities.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Senior Software Engineer (Python/Java, AWS)

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Sanderson are working with an ambitious SportsTech organisation that is embarking on a major greenfield platform rebuild and is looking for a hands-on Technical Lead to drive the project from both a technical and delivery perspective.

This role will take ownership of rebuilding a large-scale legacy platform using a modern React and Node stack, leading a newly formed engineering team while remaining close to the code and technical decision making. The organisation is particularly interested in individuals who actively embrace AI-assisted development practices and modern engineering workflows, with a strong interest in how AI tooling can accelerate delivery and improve engineering quality.

Key Responsibilities

• Lead the technical direction and architecture of a greenfield platform rebuild
• Remain hands-on across both React frontend and Node backend development
• Guide and mentor engineers within a newly formed product team
• Drive engineering standards, code quality, and delivery practices
• Collaborate closely with product, delivery, and leadership stakeholders
• Contribute to system design, scalability, security, and platform performance
• Champion modern development practices including AI-assisted engineering workflows
• Support technical planning, estimation, and delivery execution

Skills & Experience

• Strong commercial experience with React, TypeScript, and Node
• Previous experience in a Technical Lead, Lead Engineer, or similar leadership role
• Commercial experience using AI-assisted development tooling or integrating AI-driven features into products
• Experience delivering greenfield products or large-scale platform rebuilds
• Strong understanding of software architecture and modern engineering practices
• Experience mentoring developers and leading collaborative engineering teams
• Strong communication and stakeholder management skills
• Experience with cloud platforms, CI/CD, Docker, Kubernetes, or event-driven systems is beneficial

This is a full-time, permanent opportunity offering a salary up to £90,000 (DOE), with fully remote working.

If you’re a hands-on Technical Lead looking for the opportunity to own and shape a modern platform rebuild within a forward-thinking SportsTech environment, this is an exciting opportunity to make a genuine impact.

Please Note: You must be a UK resident to apply.

Apply now or contact [email protected] for more details.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Sanderson are working with a growing SportsTech organisation that is continuing to invest heavily in its engineering teams as they scale a suite of globally used platforms.

As part of this growth, they are looking for two Full Stack Developers with a strong React focus to join an established product engineering squad working on large-scale international software. This is a modern product engineering environment where developers are given genuine autonomy, ownership over features, and the opportunity to influence technical decisions within a collaborative, highly supportive team.

Key Responsibilities

• Build and enhance modern React-based applications used across global sports platforms
• Develop and maintain Node backend services and APIs
• Work closely with Product Managers, Designers, and Engineers to deliver high-quality features
• Contribute to component architecture, state management, and front-end best practices
• Write clean, scalable, well-tested TypeScript and JavaScript code
• Support continuous improvement across engineering standards, performance, and accessibility
• Participate in code reviews and collaborative technical discussions

Skills & Experience

• Strong commercial experience with React in production environments
• Solid experience with TypeScript and JavaScript
• Hands-on backend experience with Node
• Experience building and consuming REST APIs
• Good understanding of component architecture and state management libraries
• Experience working within Agile engineering teams
• Strong communication and collaboration skills
• Experience with testing frameworks, CI/CD, or cloud environments is beneficial

This is a full-time, permanent opportunity offering a salary up to £65,000 (DOE), with fully remote working.

If you’re a React-focused Full Stack Engineer looking for an opportunity to work on globally used products within a collaborative and modern engineering culture, this is a fantastic opportunity to join a growing SportsTech organisation.

Please Note: You must be a UK resident to apply.

Apply now or contact [email protected] for more details.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Enhanced security clearance is required for this role.

We’re looking for an experienced Software Engineer to help build and scale secure backend platforms used by National Security and Defence customers. You’ll work on modern cloud‑based systems using a mix of commercial and open‑source technologies across private and public cloud environments.

What you’ll be doing

• Designing, building, deploying and improving backend services and platforms
• Delivering features that meet both functional and non‑functional requirements
• Estimating and shaping user stories as part of an Agile team
• Shipping small, frequent releases to keep momentum high
• Working closely with other engineers in cross‑functional teams
• Building, optimising and running CI/CD pipelines
• Owning and supporting the services your team delivers in production

What we’re looking for

• 5+ years’ experience delivering production‑grade cloud solutions
• Strong Java experience, with exposure to JVM languages such as Kotlin or Scala
• Experience with Kafka or similar messaging platforms
• Background in Agile DevSecOps environments and Zero Trust architectures
• Experience integrating with services such as PostgreSQL, Redis and S3
• Solid engineering fundamentals: clean code, testing, documentation, code reviews and continuous delivery
• Comfortable using GitHub, GitLab and Atlassian tools
• Strong TDD experience
• Hands‑on experience with microservices and distributed systems
• Exposure to Big Data technologies

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Senior Software Engineer (Python/Java, AWS)

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Fullstack Software Developer

£600/day Inside IR-35 for an initial 6 months with extension likely

London – 2-3 days per week on site

Active SC Clearance essential

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

3x Senior C# / .NET Developer – Financial Technology (Risk & Financing Platforms)
Pay Rate: £600-£650 (Inside IR35 via umbrella)
Location: London – 3/4 days per week (with flexibility)
Duration: 6 Months (due to be extended)

A leading global financial institution is expanding its engineering group and is looking for experienced C# / .NET Developers to help build and enhance the technology that powers its risk, financing, and securities‑related platforms. This is a high‑impact role within a team responsible for systems that support critical exposure calculations, regulatory processes, and front‑to‑back financing workflows.

You’ll work closely with quantitative teams, risk specialists, and business stakeholders to deliver scalable, resilient solutions used across the organisation.

Responsibilities:

• Designing and developing robust C# / .NET services that underpin risk, collateral, and securities‑financing platforms
• Building and integrating RESTful APIs to connect with upstream and downstream systems
• Delivering clean, maintainable, object‑oriented code aligned with engineering best practices
• Supporting risk‑related workflows, including exposure calculations, limits monitoring, and reporting
• Working with large datasets and high‑throughput systems typical of institutional finance
• Participating in architectural discussions, design reviews, and technical planning sessions
• Collaborating with cross‑functional teams across Risk, Front Office, Operations, and Compliance
• Providing production support and contributing to incident analysis and resolution

Requirements:

• Advanced commercial experience with C# and modern .NET frameworks
• Background in Financial Services technology, ideally within risk, financing, or trading environments
• Strong grounding in object‑oriented design, clean coding practices, and scalable architecture
• Proven ability to design, build, and integrate RESTful APIs
• Solid experience working with SQL databases and optimising data‑driven applications
• Familiarity with automated testing, CI/CD pipelines, and modern development workflows

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Java Software Developer

£600/day Inside IR-35 for an initial 6 months with extension likely

London – 3 days per week on site

Active SC Clearance essential

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.