Lead Principal Full Stack Developer 18 Month Fixed Term Contract jobs in Bristol – Browse 140 openings on RoboApply Jobs

Lead Principal Full Stack Developer 18 Month Fixed Term Contract jobs in Bristol

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Contract|On-site|Bristol, England, United Kingdom

About Us:AND Digital is a cutting-edge technology company committed to enhancing digital delivery while addressing the digital skills gap. Since our inception in 2014, we have empowered organizations to create superior digital products and foster robust digital teams.Our mission is to make a significant impact on our clients' success through the establishment of regional offices, known as 'Clubs', which cultivate strong partnerships by ensuring dedicated teams are always nearby. This innovative approach has propelled our remarkable growth, allowing us to expand to over 1,300 talented individuals across the UK, Europe, and the USA, with ambitious plans for global expansion within the next few years.Join us in our quest to bridge the global digital skills divide!Role Overview:The Principal Full Stack Developer will leverage their extensive technical expertise to guide project direction and mentor a team in engineering best practices, ensuring the creation and delivery of exceptional products. This role will be pivotal in advocating for software quality and maintaining a technical vision for AND Digital and our clients, engaging with large-scale projects while supporting team development.

Oct 7, 2025
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company
Contract|On-site|Bristol, England, United Kingdom

Join Our Team as a Contract Principal Full Stack Developer (Node, React, Azure) - Initial Duration: 6 MonthsAt AND Digital, we are a leading tech company committed to accelerating digital delivery and addressing the digital skills gap. Since our inception in 2014, we have empowered organizations to create superior digital products and cultivate robust digital teams.We believe in making a significant impact for our clients by fostering strong relationships through our network of regional offices, known as 'Clubs'. This unique approach has fueled our success and led to remarkable organic growth, expanding our team to over 1,300 professionals across the UK, Europe, and the USA, with ambitious plans for global expansion.As a Principal Tech Developer, you will leverage your extensive technical expertise to guide project direction and mentor your team in engineering best practices, ensuring the delivery of exceptional products. You will be a champion of software quality and technical vision for both AND Digital and our clients, working on large-scale projects while supporting team development.

Oct 7, 2025
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companyDPD Group UK logo
Contract|On-site|Bristol

DPD Group UK is looking for a Customer Service Advisor to join the team in Bristol on a 6-month fixed-term contract. This role centers on supporting customers and upholding the DPD brand with care and professionalism. Key responsibilities Respond to customer inquiries, providing clear and helpful information Process orders with accuracy and efficiency Work to resolve issues, ensuring customers feel supported Maintain a positive and solutions-focused approach in each interaction Contract details 6-month fixed-term contract Role based in Bristol

Apr 28, 2026
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company
Full-time|On-site|Bristol, England, United Kingdom

At Spruce, we are driven by our commitment to revolutionize home energy in the UK, making it accessible and affordable for every household to be powered by clean electricity. Our primary customers are installers, who are leading this critical transition but have historically faced challenges with outdated and inefficient software.Having launched in early 2024, we have experienced remarkable growth, securing multiple rounds of funding from prestigious venture capital firms, and now proudly support over 500 heat pump installation businesses across the UK.We are seeking a remarkable Lead Full Stack Engineer to accelerate our progress and broaden our impact as we venture beyond heat pumps.About SpruceWe tackle one of the most challenging yet essential aspects of the home energy transition: replacing traditional boilers with innovative heat pumps. With nearly 20% of the UK's carbon emissions stemming from home heating, transitioning away from gas and oil boilers is vital for reaching net zero. Heat pumps stand out as the only scalable solution, capable of converting 1kW of electricity into an impressive 4kW of heat ().However, the installation process remains cumbersome, fragmented, and excessively manual, which inflates costs for homeowners, hampers the growth of installation businesses, and complicates urgent replacements when a boiler fails.We are addressing this challenge with our comprehensive operating system designed specifically for heat pump installers. This system streamlines operations from initial inquiries through design, installation, compliance, and paperwork. Compared to leading alternatives, Spruce:Reduces the time installers spend on each job by half;Increases sales conversion rates twofold;Enhances quality, profit margins, and customer satisfaction.And this is just the beginning. With new investments and rising demand, we are expanding into the broader home renewable energy supply chain, supporting manufacturers and merchants alongside installers, and facilitating solar and battery installations in conjunction with heat pumps.Your RoleAs our Lead Full Stack Engineer, you'll blend hands-on technical expertise with team leadership and product strategy. You will continue to write significant portions of code, particularly for critical components, but your influence will grow as you define direction, remove obstacles, and elevate team performance.You will collaborate closely with engineers, designers, and product leaders to ensure we are constructing the right things, in the right way, and at the right time.

Mar 20, 2026
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companyNew Route Recruitment Limited logo
Full-time|On-site|Bristol

We are looking for a talented Full Stack/Backend Developer to join our dynamic development team.About Us:As a leading online sports betting affiliate, we specialize in football, horse racing, greyhounds, American sports, and more. Our portfolio includes multiple websites, social media channels, and mobile applications. With a team of around 25 permanent staff and various freelancers, we have experienced rapid growth since our inception five years ago. Our websites attract over 2 million users every month, providing an excellent platform for showcasing your skills.We offer a relaxed working environment, generous paid holidays, regular team lunches, and the chance to attend exciting sporting events like football matches and horse racing meets.Reporting Structure:This role reports to the Development Manager.Role Overview:In this position, you will be instrumental in the ongoing development and enhancement of our websites, APIs, and associated products. Your responsibilities will include coding, testing, and deploying new features, contributing to the company’s growth and online visibility.Key Responsibilities:Develop and maintain company websites and essential products.Assist with user experience (UX) and product design efforts.Support fellow developers in their tasks.Conduct thorough testing prior to deployment.Ensure efficient and accurate coding practices.Drive improvements in team structure and processes.Transform briefs into products using optimal methods.Adhere to web security best practices consistently.Qualifications:Essential Skills:Proficiency in HTML, CSS, PHP, and JavaScript.Experience with WordPress CMS, APIs, and Git source control.Strong teamwork capability.Exceptional attention to detail.Excellent written and verbal communication skills.Ability to perform under pressure and meet tight deadlines.Strong problem-solving and logical thinking skills.Desirable Skills:Experience with additional frameworks and technologies.

Oct 25, 2018
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company
Full-time|On-site|Bristol, England, United Kingdom

Join us at Spruce as we revolutionize the home energy landscape in the UK! Our mission is to simplify and make affordable the transition to clean, green electricity for every home. We empower installers, who are pivotal in this transformation, by providing innovative software solutions that combat the challenges of outdated systems.Since our inception at the beginning of 2024, we have experienced remarkable growth, securing multiple funding rounds from leading VCs and now supporting over 500 heat pump installation businesses across the UK. We are on the lookout for exceptional engineers of all levels to accelerate our journey as we branch out beyond heat pumps.About SpruceWe have taken on the most critical aspect of the home energy transition: replacing traditional boilers with cutting-edge heat pumps. With heating responsible for nearly 20% of the UK’s carbon emissions, a credible approach to reaching net zero emissions necessitates the replacement of gas and oil boilers. Today, heat pumps stand out as the only scalable alternative, boasting the incredible capability to convert 1kW of electricity into 4kW of heat ().However, the installation process is often slow, disjointed, and manual, raising costs for homeowners and hindering the growth of installation businesses. This is where we come in. We have developed a comprehensive operating system for heat pump installers, covering everything from initial inquiry to design, installation, compliance, and paperwork. Compared to existing solutions, Spruce:Reduces installation time by half;Doubles sales conversion rates;Enhances quality, profit margins, and overall customer experience.And this is just the beginning. With new investments and increasing demand, we are expanding our services across the entire home renewables supply chain, supporting manufacturers and merchants alongside installers, and enabling solar and battery installations along with heat pumps.The RoleIn this role, you will collaborate closely with a talented team of engineers, designers, and domain experts to build and scale the tools that drive the Spruce platform.Depending on your experience level, you may:Take ownership and deliver complex features from start to finish;Influence system architecture and technical direction;Mentor teammates and elevate the team's standards;Or, if you are earlier in your career, learn rapidly by tackling meaningful production challenges with significant ownership from day one.The challenges you will address are diverse and profound, including:Heat loss modeling and hydronic system design;2D and 3D floor-plan tools utilizing LiDAR and computer vision;Large-scale data ingestion and geospatial analysis;Offline-first, collaborative Progressive Web Apps (PWAs);Hardware integrations with Bluetooth measurement tools, sensors, and more.

Mar 20, 2026
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companyBlake & Blake Recruitment logo
Full-time|On-site|Bristol

Join an in-house recruitment team in a full-time role as a Recruitment Assistant for a 12-month fixed-term contract. This is an outstanding opportunity to be part of a supportive and professional team while covering a maternity leave vacancy.In this position, you will collaborate closely with the Head of Recruitment and a Recruitment Advisor, working alongside the HR team to manage a variety of administrative tasks. This role is ideal for someone who thrives in a busy environment, possesses exceptional organizational skills, and has strong communication abilities.As the primary contact for all recruitment inquiries, you will facilitate the smooth operation of recruitment administration tasks. Your responsibilities will include maintaining the new Recruitment/HR database and ensuring accurate data entry.Your daily tasks will encompass:Serving as the first point of contact for recruitment inquiries via phone and email, directing queries to the appropriate HR team members.Providing comprehensive administrative support throughout the recruitment process, ensuring accurate candidate records and tracking recruitment stages. This includes arranging interviews and managing correspondence with applicants and recruitment agencies.Logging and distributing emails effectively.Ensuring timely and professional responses to all candidates, including arranging feedback as needed.Demonstrating familiarity with all job vacancies and recruitment stages.Formatting job descriptions and assisting with internal and external job advertisements.Conducting telephone screening interviews when necessary.Promoting vacancies through social media, the company website/intranet, and external job boards.Supporting HR and Recruitment Advisors with offer paperwork and communication for new starters.Organizing induction programs for new employees and completing referencing and compliance checks.Assisting with the company's graduate recruitment initiatives.This role is well-suited for individuals with a background in recruitment administration, but we also welcome applications from candidates with strong general administrative experience who are eager to support a dynamic team. Key attributes include being exceptionally organized, enjoying collaboration in a professional environment, possessing excellent communication skills, and being proficient in IT applications, particularly Word and Excel. Experience with various databases and the ability to quickly adapt to new systems will be advantageous.

Oct 2, 2018
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companyNavantia UK logo
Full-time|On-site|Bristol

Join Navantia UK as a Reward & Benefits Consultant on a 12-month fixed-term contract, where you will play a pivotal role in shaping our employee compensation and benefits strategies. You will collaborate with various teams, providing insights and recommendations to enhance our rewards framework, ensuring it remains competitive and aligned with industry standards.

Mar 20, 2026
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company
Full-time|On-site|Bristol, England, United Kingdom

AND Digital works with organizations to strengthen their digital capabilities. The team combines expertise in technology, business strategy, software development, and product management to help clients address complex challenges and close digital skills gaps. Creative thinkers and technologists who value real transformation are central to the company's approach. Role overview This Lead Backend Principal Engineer (Java) role is based in Bristol and sits within a group of over 80 professionals, with 30-40 developers ranging from Associate to Technical Lead. The position shapes technical direction for both AND Digital and its clients, balancing hands-on engineering with strategic influence. Main responsibilities Begin in a fully billable, hands-on engineering capacity. As the team grows, transition toward strategic consulting, focusing on client development and project turnaround. Work to secure new clients by addressing their technology challenges with practical and creative solutions. Define and lead the engineering vision, ensuring alignment with Club Executive strategy and client needs. Mentor developers across all levels, supporting their growth through direct involvement in projects. Establish and uphold coding standards across client projects. Provide technical leadership on complex engineering tasks, collaborating closely with Product Developers and Technical Leads. Foster a culture of inclusivity and diversity within the team and champion these values in client work. Support project delivery by aligning technical strategy with client requirements and contribute to resource planning during discovery phases. Work with the Consulting team to help shape AND Digital’s technology proposition and contribute to Thought Leadership efforts. Location Bristol, England, United Kingdom

Apr 21, 2026
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companydev2 logo
On-site|On-site|Bristol

Join dev2 in Bristol for an exciting term-time role where you can make a significant impact in a dynamic environment. This position offers a unique opportunity to engage with innovative projects and collaborate with a talented team.

Jan 22, 2023
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companyRaven Recruitment Limited logo
Contract|On-site|Bristol

Join our team at Raven Recruitment Limited as we seek skilled 2nd Fix Carpenters to contribute to an exciting commercial refurbishment project.To succeed in this role, candidates must hold a valid blue CSCS card and possess full personal protective equipment (PPE).Your key responsibilities will include:Hanging doors with precisionSecuring architrave and skirting boardsInstalling high-quality hardwood wall panelsThis position is expected to last for 2 months.Site hours are from 07:00 to 19:00, with flexibility in hours available. Weekend work is also an option.On-site parking is provided.For further information, please reach out to David at Raven Recruitment at 07483 301974.

Aug 21, 2019
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company
Full-time|On-site|Bristol Office

Our VisionAt Vertical Aerospace, we are at the forefront of transforming electric aviation. Our flagship eVTOL aircraft, the Valo, is designed to achieve 'zero emissions' and will establish new benchmarks for safety in aviation.We aim to revolutionize aerospace practices, moving away from outdated conventions to reshape the future of flight. As we evolve from a prototype company into a thriving small-to-medium enterprise (SME), the next few years are pivotal for us in achieving our ambitious objectives. Our goal is to secure airliner-level safety certification by 2028, paving the way for operational service with our airline partners.Your RoleThis unique opportunity allows you to influence a fundamental component of a groundbreaking aircraft. As the Principal Propeller Engineer, you will serve as the technical expert for propeller systems, directly impacting design choices, certification processes, and system integration.You will collaborate within a small, skilled team across various disciplines to create a safe, reliable, and certifiable solution for the Valo. Your role will be hands-on and central to overcoming one of our key engineering challenges.Your ResponsibilitiesServe as the technical authority on propeller systems, guiding design, development, and certification efforts.Establish, evaluate, and endorse the propeller architecture, including blade design, hub, spinner, and associated hardware, ensuring compliance with safety, performance, and regulatory standards.Assume responsibility for complex engineering initiatives, from analysis and design trade-offs to drafting and reviewing certification documentation.Make informed technical decisions, considering trade-offs, even under uncertain or incomplete data conditions.Lead and assist in propeller certification activities to CS-P standards, contributing to broader aircraft-level certification under SC-VTOL.Utilize extensive knowledge of materials, manufacturing techniques, and operational behavior to guarantee the durability, maintainability, and certifiability of the propeller system.

Jan 23, 2026
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companyGraphcore logo
Full-time|On-site|Bristol, UK

About Graphcore At Graphcore, we are pioneering the future of AI computation. Our skilled team of semiconductor, software, and AI specialists has extensive experience in developing a comprehensive AI compute stack—ranging from silicon and software to large-scale infrastructure. As a proud member of the SoftBank Group, supported by substantial long-term investment, we are providing crucial technology to the rapidly growing SoftBank AI ecosystem. As we capitalize on the immense and thrilling AI opportunities, Graphcore is expanding its global teams. We are uniting the brightest talents to tackle the toughest challenges in an environment where everyone has the chance to impact the company, our products, and the future of artificial intelligence. Job Summary Our team stands at the forefront of the artificial intelligence revolution, empowering innovators across various sectors to enhance human potential through technology. The accessibility of specialized AI computation will significantly influence the pace of AI's evolution. Graphcore enables innovators to achieve more, more swiftly—our contributions truly make a difference. Reporting to the Director of Silicon Architecture, the Principal SoC Architect is responsible for designing, specifying, modeling, and integrating subsystems within sophisticated, high-performance, and highly integrated silicon devices that drive AI acceleration technology. This role entails close collaboration with architecture, silicon design, verification, hardware, and software teams. The Team The Silicon Architecture Team operates within the COO group. The SoC Architects are accountable for the architectural specifications, integration, modeling, validation, and evaluation of numerous critical subsystems, ensuring the highest standards in performance and reliability.

Mar 31, 2026
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companyRamboll Group logo
Full-time|On-site|Bristol

Join Ramboll as a Principal Designer focused on Building Regulations, where you will play a critical role in ensuring compliance and enhancing safety standards in construction projects. Your expertise will guide teams through complex regulatory frameworks, fostering innovation and adherence to best practices.

Feb 5, 2026
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companyAECOM logo
Full-time|Hybrid|Bristol

Kickstart your journey with us and experience professional growth!“Are you eager to collaborate with a team of hydrologists and influence the future of the Water Industry?”Join our vibrant and multidisciplinary Water Team as a Principal Hydrologist. This role offers the flexibility of being based in one of our UK or Ireland offices while benefiting from our adaptable hybrid working model.As a pivotal team member, you will spearhead impactful water projects both across the UK and internationally. Your expertise will be essential in conducting hydrological assessments that inform flood risk management, major infrastructure development, water resources planning, and environmental permitting.This senior position merges technical proficiency, client engagement, project supervision, and leadership within our expanding water team.Your responsibilities will include:Leading hydrological assessments to inform flood risk evaluations, infrastructure design, catchment strategies, and environmental impact assessments.Providing technical guidance on rainfall-runoff modelling, river flow estimation, climate change allowances, and catchment analysis.Overseeing and reviewing hydrological modelling outputs to ensure quality, accuracy, and adherence to UK regulatory standards.Acting as the technical lead on major frameworks and multidisciplinary projects across transport, energy, water, and development sectors.Advising clients on flood risk policies, drainage strategies, abstraction licensing, and environmental permitting requirements.Mentoring and developing junior hydrologists, promoting technical excellence and knowledge exchange.Supporting business development initiatives, including bid preparation and client relationship management.If you are passionate about innovation and turning ambitious ideas into reality, AECOM welcomes you. Join our team, where we not only construct infrastructure but also uplift communities and improve lives. Follow our AECOM Water page on LinkedIn to stay informed about the impactful projects we are undertaking and witness the difference we are making in the industry!Come grow with us.Become part of our dynamic Water business, comprising around 600 experts across the UK & Ireland. Collaborate with elite engineers and consultants to deliver a diverse array of projects, from minor initiatives to large-scale developments, from concept to completion.At AECOM, you'll thrive in an inclusive and progressive environment where your contributions are valued. Enjoy a variety of core and personalized benefits designed to support your future and well-being, tailored to fit your lifestyle. Take advantage of career advancement opportunities, technical practice networks, AECOM University, volunteer days, and our flexible hybrid working model to ensure a work-life balance that suits you.

Mar 3, 2026
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company
Full-time|On-site|Bristol Office

Join Vertical Aerospace as a Principal Loads and Aeroelastics Engineer, where you will play a pivotal role in the development of groundbreaking aerospace technologies. You will be responsible for conducting comprehensive analyses of loads and aeroelastic behavior in cutting-edge aviation systems. This is an exciting opportunity to contribute to innovative projects that redefine air travel.

Mar 12, 2026
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companyAECOM logo
Full-time|On-site|Bristol

Kickstart your career and shape the future!Are you eager to collaborate with a team of skilled engineers and make significant strides in energy infrastructure? Join our Transmission & Distribution (T&D) Engineering team, where we offer comprehensive services from concept development to Power Systems Analysis, Cabling, Substations, Transmission and Distribution Infrastructure, System Balancing and Compensation, Protection Systems, SCADA, Communications, Converter Station Design, HVDC Systems, and Interconnectors, including international links.Be part of a transformative project in the UK - the National Grid's Great Grid Upgrade. AECOM, in partnership with our joint venture, has been selected as the design and consenting service provider for this groundbreaking initiative. This £9bn Enterprise partnership aims to connect clean energy to homes and businesses across England and Wales by 2030. Join us, advance your career, and contribute to this remarkable project!Your Responsibilities:As a Principal Overhead Line Engineer, you will play a pivotal role in our Transmission & Distribution team, engaging with clients to deliver technically demanding overhead line design projects. Your primary focus will be providing technical support and overseeing the design of transmission projects, particularly overhead transmission lines up to 400kV.Deliver technical support for complex overhead line designs on multi-disciplinary projects.Engage in major work programs such as GGP projects.Assist in proposal writing, detailing project timelines, resources, budgets, objectives, and goals.Provide ongoing technical support throughout project implementation, statutory planning, and public consultation events.Lead design activities related to overhead lines, including PLS-CADD modeling, line routing, structural analysis, design criteria formulation, sag-tension calculations, insulator/conductor specifications, clearance reports, and material selection.Conduct feasibility studies and ensure compliance with industry standards and regulations.Develop technical layouts and solutions for client presentations.Originate and review engineering deliverables, including designs, reports, and drawing packages.Perform internal quality checks of engineering drawings and calculations.Why Join Us?At AECOM, you will enjoy a variety of benefits and opportunities for professional growth, all while contributing to meaningful projects that make a difference.

Mar 10, 2026
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companyAECOM logo
Full-time|Hybrid|Bristol

Are you passionate about ecology and ready to make a significant impact on the environment? Join our innovative Nature team as a Principal Ecologist in one of our expanding locations, including Cambridge, Basingstoke, Croydon, Leeds, Nottingham, Newcastle, Manchester, Birmingham, Glasgow, Edinburgh, Bristol, and Liverpool. Enjoy the advantages of our flexible hybrid working model, allowing you to balance work and life effectively.At AECOM, we lead the field in ecological innovation, managing an impressive array of Ecology programs and projects through enduring partnerships with key clients. Our projects span various sectors, including power and renewables, infrastructure, environment, and transport. We frequently collaborate with other technical disciplines, such as landscape architecture, GIS, engineering, sustainability, and drainage. Recent highlights include overseeing the largest solar farms approved in the UK, a cable tunnel beneath the River Thames, significant electrical network upgrades in Kent and Suffolk, and conducting habitat regulations assessments for local authorities.Your Responsibilities:Lead and deliver high-quality ecological consultancy and advisory services to internal and external clients.Plan, schedule, and organize all phases of ecological project work, ensuring resources, budgets, and controls meet program and budget requirements.Develop technically robust and pragmatic solutions for complex ecological challenges.Oversee the production of ecology chapters for environmental statements and protected species license applications.Review and author project deliverables, ensuring high-quality outputs.Contribute to the ongoing enhancement of our technical capabilities.Join Us to Grow:Become part of our dynamic Nature business, consisting of approximately 230 professionals specializing in arboriculture, forestry, groundwater, surface water, and ecology. Our team features national and global experts across the UK & Ireland, from species license holders to impact assessment professionals, habitat creation specialists, and ecosystem restoration leaders. At AECOM, you will thrive in an inclusive and innovative environment where your contributions are recognized and valued.We offer a comprehensive range of personalized benefits designed to support your well-being and future. Enjoy career development opportunities, a flexible hybrid working model, and access to resources like technical practice networks and AECOM University.

Mar 5, 2026
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companyAECOM logo
Full-time|On-site|Bristol

AECOM seeks a Principal Mechanical Engineer to join the Bristol office. This position leads engineering projects that shape real-world outcomes, focusing on the design and delivery of mechanical systems across various sectors. Role overview The Principal Mechanical Engineer manages projects from initial concept to final delivery. The role emphasizes technical leadership and coordination with other disciplines to ensure project success. What you will do Lead mechanical engineering projects through all phases, from early design to completion Develop and deliver mechanical system designs for multiple applications Collaborate with multidisciplinary project teams to meet objectives Location This role is based in Bristol.

Apr 27, 2026
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companyAssystem logo
Full-time|On-site|Bristol

Assystem is seeking a Principal EC&I Engineer to lead and innovate in our engineering projects. As a key member of our team, you will play a pivotal role in designing and implementing electrical, control, and instrumentation solutions that meet our clients' needs. This position offers the opportunity to work on cutting-edge projects within a dynamic and collaborative environment.

Apr 2, 2026

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