Mid Developer jobs in Hatfield

Backend Software Engineer (Python) | Senior Python Backend Software Developer | Python Software Engineer 📍 London (1 day per week in office) 💰 £75,000 – £95,000 + progression as company scales 💻 Python, Django, AWS, Postgres We’re working with a high-growth, Series B SaaS company hiring multiple

Senior Java Backend Developer (Contract) Location: London (Hybrid) Rate: £650 - 700 per day (likely inside IR35) A leading global financial institution is seeking a Senior Java Backend Developer to join a high-performing engineering team, delivering scalable, data-intensive backend systems that supp

Senior Web Application Developer | £425 - £538 We're working with an international travel and holiday e-commerce leader on this exciting opportunity. They are a major player in the global leisure market, currently modernizing their digital landscape to support high-traffic booking platforms and rich

React Front End Developer | £300 - £365 per day We're working with a leading edge technology consultancy delivering high-impact custom software for enterprise clients on this exciting opportunity. Are you a React expert who thrives in a fast-paced, collaborative environment? We are looking for a hig

Web Developer (Javascript, PHP & Wordpress) | £30,000 - £40,000 We're working with a powerhouse large-scale engineering group on this exciting opportunity to take full ownership of their digital presence. This is a high-impact role where you will act as the technical heart of the group's web str

NET Developer | £45,000 - £65,000 We're working with Europe's largest and most profitable commercial radio group on this exciting opportunity. Step into a high-octane engineering environment where you will transform traditional radio into interactive digital brands across mobile, web, and digital TV

Junior Frontend Developer Cleveland & Co — London Full-time (part-time considered for students) · 4 days in-office, Fridays from home · £35,000–£40,000 + discretionary bonus + venture participation About us Cleveland & Co ( cleveland-co.com ) is an award-winning outsourced in-house legal fir

Web Developer | £40,000 - £45,000 We're working with a dynamic and innovative digital solutions agency on this exciting opportunity. We are hunting for a talented Full Stack Developer who can bridge the gap between creative UI design and robust C# .Net Core logic to help scale their expanding digita

Senior Java Developer | £85,000 - £95,000 We're working with a leading financial services technology vendor on this exciting opportunity. Are you ready to spearhead a flagship platform rebuild at the heart of London’s fintech scene? This is your chance to architect and deliver high-performance, auto

About Journi is a London-based technology consultancy where we partner with businesses to support their technology needs from strategy through delivery. We provide bespoke software development, digital transformation consulting, team augmentation, and ongoing technical support, helping clients build

Department: Engineering Location: London, UK Description About White Swan Data Technology is at the heart of our business and has produced consistent and significant results. We are a small but rapidly growing team of mathematicians, data scientists and software engineers constantly striving to refi

C# Developer | £400 - £415 We're working with a prestigious global Tier-1 investment bank on this exciting opportunity. You will join a high-performing engineering team in Canary Wharf, delivering mission-critical desktop solutions that power international financial operations. This is a high-impact

Oracle Developer | £45,000 - £55,000 We're working with a tech-forward enterprise software consultancy on this exciting opportunity. They are known for building high-performance, database-driven applications that power mission-critical operations for global clients. This is a rare chance for a heavy

As a Business Developer, you will be vital in building strong relationships with new and existing trade customers. With your friendly and engaging approach, you will contact trade customers on a daily basis via telephone and email, identifying upselling opportunities and delivering exceptional custo

Mark43 is approved to hire in Canada, the UK, and 36 U.S. states, including Alabama, Arizona, California (excluding San Francisco), Colorado, Connecticut, Washington D.C., Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, North C

About Twelve Twelve designs and builds the world’s most inspiring merchandise and packaging for the world’s most coveted brands. Using our end-to-end methodology, we integrate expert teams with a global supply chain to transform visionary concepts into high-impact realities. As a proudly B-Corp cert

About Us SharkNinja is a global product design and technology company, with a diversified portfolio of 5-star rated lifestyle solutions that positively impact people’s lives in homes around the world. Powered by two trusted, global brands, Shark and Ninja , the company has a proven track record of b

Groupon is a marketplace where customers discover new experiences and services everyday and local businesses thrive. To date we have worked with over a million merchant partners worldwide, connecting over 16 million customers with deals across various categories. In a world often dominated by e-comm

You sweat the details. You open a SaaS app and immediately notice the component that shouldn't be a modal, the auth flow nobody thought through, the table that takes half a second too long to load. Most engineers file a ticket. You fix it — and then you make sure it never happens again. That instinc

About Solo60 A London-based fitness scale-up whose platform manages dynamic bookings, PT matching, and studio analytics. Stack: React Native (Expo), Next.js, Supabase, Vercel/AWS, Stripe, GitHub Actions, Hex, Figma — with a growing IoT footprint across studios. The Role You'll be the second Full Sta