senior javascript engineer jobs in Croydon, London

Position: Front End JavaScript Developer Apply now, read the job details by scrolling down Double check you have the necessary skills before sending an application. 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...

You will shape how our engineers build, test, release, and monitor software, ensuring frictionless workflows while keeping ownership of business logic, test quality, and development practices firmly with the product engineering teams.

Job Description The Senior Electrical Design Engineers role will be to oversee junior staff and undertake engineering designs, provide project management and administration duties and to monitor design team costs taking into account the programme and budget provided for each of the projects. The Senior Electrical Design Engineer will also be responsible for assisting with fee assessments and...

Senior Data Engineer | Remote (UK or Europe) Please double check you have the right level of experience and qualifications by reading the full overview of this opportunity below. A leading prop trading firm is hiring a Senior Data Engineer to take ownership of their trading and market data infrastructure. Operating globally with connectivity to dozens of exchanges, the firm executes millions of...

You will work alongside industry recognised experts to deliver value to key utility company clients, such as Uisce Éireann, NI Water, Scottish Water and other AMP water companies.

You will also be involved with business development including providing specialist support to our account leaders and engineering practices.

Senior AI/ML Engineer Before applying for this role, please read the following information about this opportunity found below. Fully Remote £100,000–£120,000 + benefits About the Role Our client, a blockchain analytics scale-up, is looking for a Senior AI/ML Engineer to join their expanding team. They're scaling their AI capabilities and need someone passionate about applying cutting-edge...

You will be working as part of a multi-functional team based in either Croydon or Manchester , shaping our deliverables within our Single Intelligence Environment.

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.

You will join a cross-functional product engineering team working on the evolution and modernisation of a core SaaS platform. The focus is on building scalable, cloud-native services while improving reliability, performance, and long-term maintainability.

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 will be given autonomy over your work so that you will have the opportunity to shape the projects you're working on. We are a people-first business, which means people are at the heart of everything we do here. We offer our consultants a safe environment where knowledge sharing, and open communication is encouraged.

You will be working as part of a multi-functional team based in either Croydon or Manchester , shaping our deliverables within our Single Intelligence Environment.

Founded by Paul Anthony, creator and co-founder of Primer (Series B, $425M valuation), Colossal is building at the intersection of generative app development and commerce infrastructure. Think: Lovable for commerce, but for non-developers. Read on to find out what you will need to succeed in this position, including skills, qualifications, and experience. We're backed by Tier 1 investors:...

About Webigence and Spark Travel Is this your next job Read the full description below to find out, and do not hesitate to make an application. 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...

Title: Forward Deployed Engineer – AI & Customer-Facing Technical Leader Are you ready to apply Make sure you understand all the responsibilities and tasks associated with this role before proceeding. Location: Remote Travel: Customer visits 4–5 days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech:...

Location Read on to fully understand what this job requires in terms of skills and experience If you are a good match, make an application. - Remote, but requirement to meet up once a month for in-person collaboration day - UK based About Akixi Akixi is a leading provider of SaaS analytics solutions for cloud-based communication platforms, helping service providers and enterprises gain...

BRAND NEW ROLE - Senior Exec Level - Marine Geo All potential applicants are encouraged to scroll through and read the complete job description before applying. Director of Business Development - Geotechnical Engineering & Geoscience Consulting About the Company Our client are a growing offshore geotechnical services and consulting unit, focused on delivering high-quality, technically robust...

Do you have 4+ years of hands-on ML experience and enjoy deploying models into production? Please make an application promptly if you are a good match for this role due to high levels of interest. Have you worked with GenAI / LLMs and modern ML tooling in real systems? Are you interested in crypto, blockchain, and applying ML to complex on-chain data? A Series B, high-growth SaaS platform...

Mott Mac Donald is seeking a Senior Process Engineer to join their dynamic One Water Team in the UK. This role involves leading process engineering projects in water and wastewater treatment, mentoring junior staff, and supporting business development efforts. In addition to technical expertise in water sector challenges, the position offers substantial opportunities for career growth within a...

Senior Mechanical Engineer - Southern EnglandBrighton, United Kingdom / Cambridge, United Kingdom / Croydon, United Kingdom / London, United Kingdom / Reading, United Kingdom / Southampton, United KingdomLocation/s: Reading, London, Croydon, Brighton, Cambridge, Southampton; UKRecruiter contact: Nicola CoyleMott Mac Donald is a global engineering, management, and development consultancy with over...