Rails Developer jobs in Doncaster

You will be part of a small hybrid-working team focusing on building new services and maintaining existing services on company’s cloud platforms. You'll work closely with the dedicated Infrastructure Engineer who manages company’s AWS infrastructure.

Mid-Level Ruby on Rails Developer Location: Hybrid or Remote We’re partnered with clients that are looking to bring in Mid-Level Ruby on Rails Developers. What we’re looking for - 3+ years of experience with Ruby on Rails. - Strong knowledge of RESTful APIs and service-oriented architecture. - Familiarity with front-end technologies (JavaScript, React, or similar) is a plus. - Experience with...

Ruby on Rails Developer - Senior - £450p/d Inside IR35 - Remote Experience Requirements - Extensive experience with Ruby on Rails development. - Strong understanding of web application design and best practices. - Proven ability to deliver high-quality code and work collaboratively in a team environment. - Prior experience working to Government Digital Standards

Are you a geotechnical design engineer with experience of working on rail infrastructure projects? Are you looking for a new contract position? Location: Doncaster (3 days in office, 2 from home) - potential to be based in Manchester as well Rate: £350-£400 day (subject to IR35 assessment) Contract: Initial 6 months with likely extensions We're looking for a geotechnical design engineer with a...

Are you a master of sparks? Look no further! We're on the lookout for skilled and passionate PTS rail welders to join our dynamic team and play a pivotal role in shaping the future of the rail infrastructure. RSS Infrastructure is looking to recruit the following roles:Aluminothermic Welders (both processors) MMA 1-5FCAW 1-2 WeldersGSMSO53/54 InspectorsTR80 Grinding OperativesWhat will I be...

Job Description Site Health & Safety Advisor Location: Site Based / Doncaster Salary: £40,000 - £50,000 Negotiable dependant on level of experience plus car allowance and package Company Information: A successful rail infrastructure contractor specialising in track installation & signalling is looking to recruit a HSQE Advisor to support their busy team and actively ensure high standards of...

You will be working in one of these 2 locations: Belfast or Prestwick (Scotland), 3 to 4 days onsite. Key Responsibilities - Lead complex supplier development and recovery missions to safeguard delivery and quality - Drive continuous improvement roadmaps with strategic suppliers and their sub-tiers

Senior Full Stack Developer Contract type: Full time, permanent Salary: £DOE Reports to: Head of Product Engineering Direct reports: Yes (initially none, growing over time) Location: Remote-first with occasional travel to client sites or team meet-ups (typically quarterly) The successful candidate must hold British Citizenship, due to the requirement for Security Clearance. About...

This is a remote role, preference being someone based in the North West of England and able to come to the South Manchester area sporadically for meetings etc…. This role would suit someone who has solid front AND back end development experience, our clients are agnostic on tech and background – more about personality and quality of experience. The Client: SaaS Platform with outstanding uptake...

You will define the technology, data and AI foundations that make this vision a global reality.

You will lead our evolution from surface-level, bolt-on AI features to a deeply integrated AI-native platform—where data, models, and decisioning are embedded across the customer journey, logistics orchestration, and operational tooling to drive measurable step-changes in performance.

You will be responsible for identifying, acquiring, and managing new clients across both regulated and high-risk sectors, leveraging your regional knowledge and technical understanding of payments. Key Responsibilities - Manage and grow an active client portfolio across financial institutions, fintechs, and high-risk merchants (including gaming, FX brokers, and e-commerce platforms).

You will be joining an organisation synonymous with engineering excellence, developing leading power generation technology solutions for customers in the marine, construction, agricultural, rail and defence sectors (amongst others). A genuine leader in their field, this company provides comprehensive training for the engineers, to reflect the developing and emerging technology in its product range.

Estimator (Rail) Salary bracket: £50,000 pa - £60,000 pa + car allowance Location: Doncaster Opportunity for an experienced Estimator (accustomed to working on Rail Projects), to join the Commercial Team of a multinational company in the Infrastructure Sector, to manage bids from inception to submission and navigate communication with internal and external stakeholders. The ideal candidate...

You will act as the subject matter expert (SME) for fire strategy and fire safety guidance, ensuring strategies are buildable, operable and auditable across design, project delivery and steady‑state operations. Translate standards and client obligations into clear operational controls for ISS teams and partners, consistent with the OneISS way of working.

You will represent the company to new and prospective customers, promoting its product range, technical services, and strong reputation for reliability and quality. This role is ideal for a self-motivated individual with a solid background in B2B technical sales and an understanding of electronic components or the supply chain needs of high-reliability sectors.

Senior Software Engineer / Tech Lead £90,000-£120,000+ Benefits + Remote working A Senior Software Engineer / Tech Lead opportunity for an exciting product led SaaS business offering innovative AI and Robotics solutions to a global customer base. The business offer an exciting product and are growing rapidly. They promote autonomy and collaboration and value problem solving skills and the...

Technical Staffing Resources (TSR) are the in-house agency and master vendor for KBR who are a leading global engineering, construction, and services company. KBR support the hydrocarbon and government services markets on six continents. Serving their customers through diverse business units, KBR offer challenging assignments on some of the world's largest and most complex projects. We are...

You will operate at a senior level, engaging in Opportunity Assessment, Savings Delivery, Transformation, Strategic Sourcing, Contract and Supplier Relationship Management, and Project/Programme Management.

You will be expected to lead consultancy deliverables, manage teams or work independently, and contribute to internal business development, best practice, and innovation.

Senior Ruby on Rails Engineer Location: Hybrid or Remote We’re partnered with clients that are looking to bring in Senior Ruby on Rails Developers. What we’re looking for - 5+ years of experience with Ruby on Rails. - Strong knowledge of RESTful APIs and service-oriented architecture. - Cloud experience with AWS or GCP is an advantage. - Familiarity with front-end technologies (JavaScript,...

You will be responsible for ensuring our teams are delivering high quality, scalable software that powers our global logistics operation.

You will provide direct, practical mentorship required by a lean team.

You will ensure tech priorities perfectly support urgent business goals and operational reality.