Senior Web Application Developer jobs in Leeds, West Yorkshire

Most "web developers" can't do this job. Why? Because most have only ever built sites using templates WordPress themes, Shopify stores, Wix layouts. But Bounce? We didn't touch any of that. Every single line of code was written from scratch. The backend, the frontend, the pages all bespoke. We've built a fully custom third-party ticketing platform to compete with Eventbrite, Dice, and...

You will play a crucial role in designing and implementing scalable, efficient integration solutions using a range of data formats and technologies, including XML, JSON, and CSV. As an expert in XML tooling, XSLT, and data transformation, you will be responsible for ensuring data accuracy, performing complex transformations, and supporting integration and migration processes.

Role’s Responsibilities - Design, develop, and maintain end-to-end web applications using Python, JavaScript (Node.js/React), and MongoDB. - Build and deploy microservice-based architectures aligned with 12-Factor App principles, ensuring scalability, maintainability, and resilience. - Collaborate with product managers, designers, and other engineers to translate business requirements into...

Please note: applications via EasyApply will not be considered. To apply, email your CV & portfolio to careers@tefl.org Department: Technology Reports to: Head of IT / Managing Director Location: Remote (UK-based) Contract: Full-time, Permanent About Us The TEFL Org is the leading provider of accredited TEFL (Teaching English as a Foreign Language) certification courses. With a global...

Application Development Manager - MS dynamics 365, Power Platform Remote with occasional travel £65,000 - £74,000 + exceptional pension + package Fruition are recruiting an Applications Development Manager for a tech for good organisation who make a genuinely positive impact on people's lives. This role will play a key role at a crucial time for the organisation as they invest in their IT...

Senior Backend Developer Location: Hybrid (Leeds office 2 days/week) + Remote About the Role: Join a values-driven digital agency where your work really makes a difference. You'll be developing high-traffic, performance-critical backend systems for organisations with impact-from cultural institutions to public-sector bodies. You'll work alongside front-end developers, designers and project...

You will be responsible for the end-to-end design, development, and delivery of a critical, high-scale digital service. Leveraging your expertise across the full technology stack, you will build robust solutions that meet stringent standards for security, performance, and reliability.

You must have the full right to work in the UK to be considered. Key Skills & Experience: - Minimum 4 years NetSuite Development experience - Strong experience with SuiteScript (1.0 & 2.0), SuiteFlow, SuiteTalk, SuiteBuilder and other NetSuite tools (min.

Senior Frontend Engineer – Up to 70k – Manchester/Remote – Automotive SaaS ECOM have teamed up with a tech company that build products for the automotive industry in a truly unique way, and they are looking for a Senior Frontend Engineer to craft stunning user experiences and bring a higher level of engineering practises to an already highly performing team. If you're passionate about...

We have one open position of Senior DotNet Developer with one of our client based at Leeds, UK. This is a Permanent/Fulltime and hybrid position . Below is the job description for your reference. Please share your application once you are interested. Role: Senior Dotnet Developer(Serverless and AWS) Mode: Fulltime/Permanent Location: Leeds, UK Hybrid Job Description: Position...

Senior Thingworx Developer Can be based anywhere in the UK - £54,000 + excellent benefits My client is growing their PLM development team and looking for an experienced Thingworx Developer to design and enhance digital tools that connect engineering, data, and manufacturing across their business. You’ll: - Develop dashboards, interfaces, and database integrations - Build and support RESTful /...

Would you like to join a cyber security SaaS company at the forefront of vulnerability scanning and security research? If your skills, experience, and qualifications match those in this job overview, do not delay your application. Do you have experience in a software support role for a SaaS or digital product company, along with strong experience web app and infrastructure technologies? If so,...

Senior Full Stack Developer – SaaS / Field Service Platform Salary: £60,000–£70,000 Location: Ireland or UK (preferably NI or Leeds area) Work pattern: Fully flexible hybrid (remote-friendly) Our client is a homegrown SaaS success story – a multi-award-winning software company developing a leading field service management platform used by mobile workforces across the UK and Ireland. Their...

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...

We're looking for an Application Support Engineer to join a fast-paced tech environment where reliability, automation, and performance are everything. You'll play a key role in maintaining and improving a complex application landscape that powers mission-critical services — ensuring uptime, scalability, and compliance at all times. This role suits someone who thrives in a mixed systems...

Senior Full-Stack Developer | Symfony & React/Angular/Vue | Rapidly Expanding Tech Company My client is seeking a Senior Full Stack Developer with a passion for PHP Symfony & React, Angular or Vue to join their team. You'll be a key contributor to engineering efforts, working closely with our leadership to enhance and scale the core platforms. This is a hands-on position where you'll solve...

Salesforce Developer We’re seeking an experienced Salesforce Developer to lead the technical vision, governance, and design of our clients Salesforce ecosystem. This role would be ideal for a developer looking to move into a development role with an element of Architecture. Ideally you will have experience with CPQ and LWC. Responsibilities • Act as the architectural authority for Salesforce,...

🚀 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...

A cybersecurity start-up in Leeds is seeking a Full-Stack PHP Developer to join its small but growing team. The business has evolved from dark web monitoring into a full External Attack Surface Management (EASM) platform. The role is focused on enhancing, maintaining, and scaling this SaaS platform while embedding secure coding practices. Key Responsibilities Enhance and maintain the SaaS...

Senior Full-Stack Web Developer | Legal EdTech | Remote Join a leading EdTech provider delivering innovative online learning as they embark on a major transformation. As a Senior Full-Stack Web Developer, you'll design, build, and modernise scalable web applications that power our learning management systems. You'll work across ASP.NET Core, React, C#, JavaScript, and Azure. What you'll do: -...