Senior Web Application Developer jobs in Preston

About Roadern Roadern is building an AI-powered road and asset intelligence platform used by road authorities and councils. Our product is mobile-first, turning smartphone imagery, GPS, and sensor data into actionable insights at scale. We're looking for a senior engineer who is strong in React Native, comfortable with map-heavy interfaces, and happy working across mobile and web in a startup...

About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‐first, often highly complex software. Our engineers pair forward‐thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‐standing third‐party clients, we're scaling our own SaaS product—Spark...

You will be working in a fast-paced environment to develop new website themes and add new features in a complex Next. js-based codebase (including a CMS). This is a great opportunity for the right person to take on a challenging and broad role. Homeflow is operating on a fully remote basis but occasional travel will be required for our company meet ups (bi-annually at most in the UK).

Department: Support Reports To: Application Software Support Manager Location: Remote Salary: £55k - £60k /yr (depending on experience) Contract Type: Permanent – Full Time Role Summary We're looking for an experienced full-stack .NET developer to join our team in a new and exciting role. This role will initially be supporting an array of clients, helping our support team to continue to...

Sanderson Government and Defence are supporting a commercial supplier to government in their search for a Cloud Application Developer to work out of either London, Manchester or Gloucestershire. Find out exactly what skills, experience, and qualifications you will need to succeed in this role before applying below. This client, aside from offering a very strong package, offer an excellent...

Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date: ASAP Purpose of the role: As a Front End Developer you will join one of our multinational Scrum teams to create state-of-the-art software solutions. In all...

You will also be entitled to 8 Bank Holidays, 2 additional statutory Bank Holidays, and have the option to buy additional leave each year. - Our staff discount scheme in partnership with Vivup, allowing you to access discounts with a range of UK retailers, saving on everything from weekly food shops to white goods and cars.

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

Reports to: Technology Director / Executive Sponsor Location: Remote with occasional travel to London (2 times a month) Contract: Full-time, permanent Base Salary: £70,000 – £80,000 location and experience dependent + 10% company bonus scheme and sales commission scheme Why This Role Exists Serve Legal is entering a new chapter: evolving beyond compliance auditing into AI enabled,...

You will be responsible for defining QA standards, improving test coverage, and ensuring consistent, reliable releases across multiple teams. This is a hands on role with a strong focus on both manual and automated testing. Location: Remote or hybrid, UK based

You will design, develop, and maintain our platform's backend infrastructure, focusing on multi-tenant architectures, security, and efficient LLM integration. This role requires a strong understanding of Python web frameworks, cloud services (particularly AWS), and modern AI approaches including working with agentic architecture.

You must speak, write and be able to understand fluent English. - Deep knowledge and regular usage of Firebase suite, especially Firestore. - Strong proficiency in TypeScript and modern JavaScript (ES6+).

You must enjoy constantly learning and researching to improve your level of expertise.

React Native Developer (Tech for Good) (Social Education Learning) Remote Work 3-month Voluntary Work Experience Opportunity London Are you a React Native developer with mobile app experience, and a desire to put your skills toward positive social impact? Want hands-on experience designing and building intuitive mobile interfaces for learners around the world? If yes, this could be the...

We're looking for a Principal Business Development Manager to join WD Interiors, based within our Old Bailey office in central London, with the opportunity of flexible hybrid working. This is a lead-level role within our business, focused on driving the growth of our private sector workplace and Cat B occupier fit-out portfolio, typically projects valued between £5m and £30m (20,000–70,000 sq....

Business Development Manager – Energy Consultancy UK-based | Remote-first | New Role Are you an experienced energy sector Business Development professional with a strong track record in energy procurement, bill validation and strategic partnerships? This is a newly created role offering the opportunity to shape and lead the business development and field sales function for a growing energy...

You will own the UK market from the first touchpoint to the final signature, selling directly to CTOs, Heads of QA, and Engineering Leaders.

You will be given the tools to succeed and supported by a successful bid function and marketing teams.

You will be adept at prospecting for new business, converting qualified leads and networking across existing clients. Applicants must have experience of developing new business and converting sales opportunities within the security sector.

About Sirion Sirion is the world's leading AI–native Contract Lifecyle Management (CLM) platform, transforming the end-to-end contracting journey for enterprises. With Agentic AI at the core, the platform's extraction, conversational search, and AI-enhanced negotiation capabilities have revolutionized contracting across Fortune 500 companies like IBM, Coca Cola, Citi and GE. With more than 800...

Identify, develop and win new business opportunities within the Auto, Industrial, Beverage, Rail and Utilities sectors that fit with our core competencies and capabilities, delivering a New Business pipeline and growth for the business. Opportunities normally in the range of £1.5m to £10m sales, £150k to £1m EBITDA. Main Duties & Responsibilities: - Engagement plan: Create and maintain a...

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.