1 to 25 of 69 Permanent Senior Developer Jobs in Hemel Hempstead

Senior NetSuite Developer – NetSuite, Systems Developer, Software Developer, Systems Engineer, Software Engineer, Web Developer, SuiteScript, Technical Lead, NetSuite Engineer, Senior Developer, Lead Developer, Integration Developer, Mulesoft, Celigo, Boomi, HTML, JavaScript, API – Greater Manchester – London -Surrey – Merseyside - West Midlands - East Midlands – Midlands … Edinburgh – Cheshire – Staffordshire – Hampshire – Derbyshire – Kent – Essex – Permanent – Hybrid - £80,000 - £90,000 Our client, a UK based global end user, are seeking a Senior NetSuite Developer to join their internal team to support implementations, customisation and further enhancements across the business. The ideal candidate will posses a … practices and working in an Agile environment. Desirable Skills & Experience: Bachelor’s degree in Computer Science/Information Technology or similar Preferred certifications: Application Developer, Web Services Developer, SuiteCloud Developer Other NetSuite certifications are an advantage (Administrator, ERP Consultant etc.) Experience with Boomi, Mulesoft or other integration More ❯

Senior React Developer - Manchester/Hybrid (React Developer, ReactJS Developer, Front End Developer, Senior Developer, React, ReactJS, Node.js, HTML, CSS, JavaScript, ES standards, TypeScript, Unit testing, Functional testing, Source Control, Git, React Developer, ReactJS Developer, Front End Developer) Our client … innovator and world leader with one of the most recognisable names within technology. They are continually growing and are looking for a technically savvy Senior Front End Developer with exceptional React skills to join an award winning technical team. We are seeking passionate Senior React Developers with More ❯

Senior Salesforce Developer Senior Salesforce Developer required by a leading professional body/non-profit in London. The role: This organisation has a dynamic technology environment and as the Senior Salesforce Developer you will play a key role in the ongoing development of the … for application and database architecture, and will oversee implementations, integrations, and support. You will even get the opportunity to mentor and manage a Junior Developer and Salesforce Administrator. With a collaborative, friendly and stable team, this is an organisation that continually invests in its technology estate. You will have … accurate delivery estimates and manage the transition from analysis through to design and delivery. This is an exciting and challenging opportunity for a Salesforce Developer who is looking to make that next step in their career, be involved in a wide range of projects and take on responsibility for More ❯

Senior PHP Developer Salary: £60,000-65,000 Location: Manchester- Hybrid Tech Stack: PHP, Laravel, Vue.js, AWS Are you a PHP Developer who's looking to take the next step up as a Senior Developer, taking ownership of projects and make a positive impact? Maxwell … Bond have partnered with a Tech start-up who are looking for a PHP Developer to join them at an exciting stage of their growth where you can work on greenfield projects and progress your career. With a pipeline of projects and the business expanding globally, you'll work … building APIs from scratch. This is a great opportunity to join the team at this stage of growth, so if you're an experienced Senior PHP Developer, apply for the position now More ❯

Senior .NET Developer Fully Remote (UK based) Paying £75,000 - £80,000 Oliver Bernard are partnered with a Software Development company in the Sustainability sector. They are looking for a Senior Backend Developer with at least 5 years experience writing scalable, performant and maintainable code. The … the UK to be considered. Visa sponsorship is not available for this role. Salary is paying £75k-£80k + benefits. If you are a Senior .NET Developer who is looking for a great work life balance, whilst having lots of ownership and a key say in the direction … of your projects, please apply now for more info! Senior .NET Developer More ❯

Senior Developer (SC Cleared) Location: Remote with occasional travel The Company At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises autonomy, experimentation, and rapid learning to deliver exceptional value to our clients. Our company culture is deeply collaborative, ensuring that all colleagues … and accelerate delivery. Our team consists of highly skilled cross-functional consultants, analysts, and support staff. Job Overview We are seeking a highly skilled Senior Developer to join our dynamic team. You will lead the development and enhancement of web applications using HTML, CSS, JavaScript, Node.js, Express.js, and More ❯

Our two key sites are futwiz.com and pikawiz.com, with more being launched shortly. Role Description This is a full-time remote role for a Senior Developer at Wiz Media. The Senior Developer will be responsible for the day-to-day tasks associated with developing, maintaining, and More ❯

Do you have a PhD in Computer Science? FULLY REMOTE Senior Java Developer – Sustainable Energy GreenTech Salary : £100-140k + benefits Location : fully remote from anywhere in the UK I am partnered with a unique energy software platform that is helping consumers transition towards a sustainable future … by producing energy as a services. They are in search of an enthusiastic and knowledgeable Senior Java Developer with a strong comprehension of the Core Java principles alongside a deep understanding in Advanced Computer Science: Algorithms Graph theory Interval graphs Compiler theory You will be a fantastic Senior Java Developer if you have worked with Core Java and have extensive experience with Multithreading, Concurrency and Low Latency, because you will be building your own frameworks and designing new databases from scratch. Your role as a Senior Java Developer will include: - Domain modelling - Requirement engineering More ❯

Senior WordPress Developer PHP - Laravel - JS/JQuery £400-450 per day, Outside IR35 Fully Remote (Must be based in the UK) Initial 6 week contract (Very likely to extend) Start date: 16th of June One of our longstanding partners urgently requires the services of a Senior WordPress Developer on an Outside IR35 Contract basis, initially until the end of July, with the strong likely hood of longer term extensions. This Contract would suit an experienced Senior WordPress Developer who is ideally comfortable across the Full Stack, however this role will have a More ❯

Senior Frontend Developer - with Full Stack Experience | £70K | Fully Remote (UK-based) Are you a Senior Frontend developer/React Developer who thrives on crafting elegant, user-centric applications, and also enjoys getting stuck into backend logic when needed? Want to work in a team … of the best places to work in the UK. They’re now looking to add one more A-Player to their Engineering team, a Senior Frontend Engineer who’s also comfortable getting hands-on with Node.js on the backend when needed. You'll be joining a high-performing team More ❯

Senior Software Developer - Lisburn (Hybrid/On-Site) 📍 Location: Lisburn, Northern Ireland 🕒 Contract: Permanent, Full-Time (37.5 hrs/week) 💻 Work Setup: Hybrid/On-site We're hiring a Senior Software Developer to join a small, agile engineering team working on impactful, business-critical software. … modern DevOps and deployment practices ( Docker, AWS ECS, CI/CD ) Refactoring and optimising legacy systems for performance, scalability, and maintainability Mentoring a junior developer through code reviews, guidance, and best practices Collaborating with business stakeholders to translate needs into efficient technical solutions Contributing to architectural decisions, technical direction More ❯

Senior .Net Developer (Azure) We are seeking a hands-on Senior developer to join a reputable fintech banking as a service organisation. You will be responsible for mentoring and providing continuous improvement. Working alongside peers we are looking for someone who enjoys collaborating with their Team More ❯

Senior CRM Developer Hybrid – Hook, Hampshire | £55,000 - £65,000 + Bonus + Benefits We’re supporting a fast-growing, tech-driven business in their search for a Senior CRM Developer to help revolutionise how they manage customer operations. This is a hybrid role , typically … Be part of something high-impact and high-visibility Competitive salary, strong benefits, and a clear progression path 📩 If you're an experienced CRM developer who enjoys coding, automation, and building better customer journeys through smart tech—get in touch today to find out more. More ❯

Job: Senior PHP Developer Location: UK remote Salary: up to £65K Tech: Symfony, React, MySQL, git, Restful API Are you looking for a remote Senior PHP Developer role? Working with some of the UK’s biggest companies? Then read on... The company: At heart, they’re … long-term project with a leading telecoms supplier. The project has been running for over 8 years already and they’re looking for a Senior PHP Developer to come in and take over the workload. Tech skills you'll need: Symfony (or similar MVC frameworks like Laravel, CodeIgniter More ❯

Senior Oracle Developer | up to £75,000 | Berkshire, Hybrid Pearson Carter are working with a very exciting client in the Travel and Leisure industry who are are partnered with giants such as TUI, EasyJet, Premier Holidays and more. They are looking for a Senior Oracle Developer More ❯

Senior PHP Developer Drive Innovation, build the future at Micropress. About Micropress Printers Ltd As one of the UK’s largest independently owned commercial printers, Micropress operates from a state-of-the-art facility, utilizing cutting-edge technology to deliver high-quality, bespoke print solutions tailored to the … people who can effectively manage and align with the evolving expectations of a fast-paced business environment. About the Role Join us as a Senior PHP Developer, where you’ll lead the charge in building robust, scalable software solutions that power our operations. You’ll own pivotal development More ❯

Senior Laravel Developer w/VueJS (or React/Angular and willing to cross train) 🌳🌳 Areti has partnered with a brilliant Fintech seeking an experienced Senior Full Stack Developer to join the team, working to deliver their bespoke financial software. You must be an advocate of More ❯

Job Title: Senior Business Central Developer/Architect Location: Northampton (Hybrid – 3 days in-office per week) Employment Type: Full-time, Permanent Salary: Up to 85k Overview: A leading Microsoft Dynamics 365 Business Central partner is seeking an experienced Senior BC Developer/Architect to join More ❯

Senior Full Stack Developer - UK Based Only 💻 React | TypeScript | Python | Django 💸 Up to £75,000 🌍 Fully Remote (UK-Based) | Occasional Team Meetups Are you a seasoned Full Stack Developer who enjoys taking technical ownership and driving architectural decisions? A fast-growing tech company is hiring a Senior Full Stack Developer to join their collaborative team working on cutting-edge, data-driven platforms. You’ll play a pivotal role in both hands-on development and leading best practices across the engineering function. 🔧 The Stack: Frontend: React, TypeScript Backend: Python, Django DevOps/Infra: CI/CD More ❯

Job Title: Senior Java Developer Location: Primarily Remote (with meet ups twice a month) Salary: £80,000 - £90,000 (Flexible based on experience) Are you an experienced Java developer looking for a new challenge? Do you thrive in an environment where you can take ownership of key … exciting? Then this may be for you: Mostyn Chase are conducting an exclusive search for a well-established fintech in the payments space for Senior Java Developers to join this growing and dynamic team. The roles are designed to bring in developers who can work independently, solve complex problems … building scalable and secure web applications, and participating in the entire software lifecycle—from gathering requirements to deploying solutions. If you are an experienced developer who enjoys working autonomously and is comfortable working in a flexible, remote-first environment, this could be the perfect opportunity for you. The ideal More ❯

Job Title: Senior Salesforce Developer Location: Remote (UK-based) with occasional client site visits Salary: £85,000 - £100,000 An established digital consultancy is seeking a Senior Salesforce Developer to join a high-performing UK-based engineering team. This is a hands-on, client-facing role … Experience with version control (Git/SVN) and DevOps pipelines. - Solid grasp of Agile methodologies. - Confident communicator with stakeholder-facing experience. Preferred: - Salesforce Platform Developer I/II - Salesforce Platform App Builder - Salesforce Administrator - JavaScript Developer I More ❯

Senior Salesforce Developer £60,000 per annum Central London (2 days/week onsite, remainder remote) Full time hours, permanent contract Professional/Membership Body Key Responsibilities: Lead the development, improvement, and support of a major organisation's Salesforce platform Drive adoption and optimise the use of Salesforce … the in-house Salesforce technical expert, overseeing implementation, integration, and support Define and design Salesforce application and data architecture Line manage the Junior Salesforce Developer and Salesforce Administrator Collaborate with Membership, Exams, Events, and third parties to ensure smooth CRM operations Lead on system upgrades, enhancements, and testing to … and Digital planning and resource allocation Champion collaborative working across internal teams for seamless delivery of systems and services Key requirements: Salesforce Administrator and Developer certifications (essential) 2+ years' experience in Salesforce project development Strong experience with Apex, Lightning Web Components, SOQL, Flows, and Salesforce APIs Proven ability to More ❯

Senior Looker BI Developer (Fixed-Term Contract) - Marketing Analytics Location: Flexible within the UK Contract Duration: 12 Months Fixed-Term Anticipated End Date: December 2025 Salary: £60,000 - £80,000 per annum The Opportunity We're recruiting on behalf of a prominent global technology company , a leader in … BI solutions primarily within Looker , translating complex marketing data into actionable insights. A key part of your role will be mentoring a junior LookML developer . This is a hands-on role focused on empowering data-driven decision-making. Responsibilities Design, develop, and maintain Looker dashboards, reports, and explorations. … provide user training. Contribute to BI development standards and stay updated on Looker/GCP trends. Qualifications and Experience Extensive experience as a BI Developer/Analytics Engineer, specialising in Looker (dashboarding, advanced LookML). Proven experience mentoring junior developers in LookML/BI development. Strong SQL proficiency with More ❯

Senior Frontend Developer Ready to solve a $600B problem affecting millions of lives across Africa? I'm partnering with a rapidly scaling fintech startup that's revolutionizing cross-border payments for African businesses. They're tackling the massive challenge of expensive, slow international transactions that currently cost merchants More ❯

My client, a reputable cyber security vendor with a global presence and excellent product recognition, is seeking a Senior Backend PHP Developer to join their team. This is a permanent role and this client is open to a fully remote candidate based in the UK or someone based … in London who is open to hybrid work. Your Responsibilities : As Senior Backend PHP Developer, you will be working closely with the Development Team and Infrastructure Team to work on their tech stack and projects. What you'll be doing: • Design, develop, and maintain scalable, secure, and high … backend development, cloud computing, and DevOps to enhance system design and team capabilities. What You Should Bring? We're looking for a hands-on Senior Backend Developer with DevOps experience, possessing the following: • Proven expertise (5+ years) in backend development with proficiency in PHP and experience in Python More ❯