126 to 150 of 289 JavaScript Jobs in Central London

agentic systems. Both on performance and compliance (harm, guardrails, etc) 4+ years of development competency across a variety of languages, frameworks, and tooling, such as Python, R, Kubernetes, Kubeflow, JavaScript/JVM, Kafka Background in Application development, deployment, and monitoring on Kubernetes Proficient in PyTorch or similar frameworks (e.g Tensorflow) – demonstrates strong understanding of neural networks and LLMs; familiar with More ❯

/weekends during major sports events. What you’ll bring 1–3 years in technical operations, reliability/SRE, support engineering, or data operations. Comfortable with a scripting language (JavaScript or Python); familiarity with a strongly-typed language (Rust/Java/C/C++) is a plus. Hands-on debugging skills: reading logs, calling API endpoints, basic troubleshooting on More ❯

will work with their product team to design, code and test their platform, while also working together with their customers and partners Key requirements: 4+ years’ experience working with JavaScript and React. Experience working with Python. Experience working with Django. AWS. Bonus if you have worked in start-ups before. If you’re a Senior Fullstack Engineer (React, Python) looking More ❯

We’re building out a brand-new division from scratch and need immediate, hands-on Lead Engineers with both strong technical skills and proven people leadership experience. ➡️ Tech stack: JavaScript, TypeScript, Node.js, React or Vue (not all essential) ➡️ Location: Hybrid — 2 days onsite in Central London ➡️ Rate: £600-650pd (Outside IR35) If you’re interested, his the apply button More ❯

customers use of their products, comprised of all senior level developers and above this team tackles the toughest tech challenges in the business. Key Skills Strong understanding of either JavaScript or TypeScript Good experience with C++ and/or Rust Experience with WebAssembly (WASM) Knowledge of Cyber Security when creating web applications Good knowledge of cloud platforms, IaC containers and More ❯

on frontend patterns, API design, and how the frontend and backend fit together (they currently use Python, REST, GraphQL, microservices). What They Are Looking For: Proven expertise in JavaScript and React, including modern practices and shadcn experience. A track record of building products from scratch or pivoting products at speed, ideally in startup/scaleup contexts. A mindset for More ❯

highly collaborative, product led team building out greenfield features used by thousands of users every day. We’re looking for: 👉🏼 3+ years’ commercial experience with React Native & React 👉🏼 Strong JavaScript/TypeScript development background 👉🏼 Solid knowledge of state management, REST APIs, HTTP, async programming 👉🏼 Hands-on experience integrating with AWS (Cognito, Amplify, S3) 👉🏼 Experience working with app stores (Apple/ More ❯

mentality : adaptable, proactive, and comfortable wearing multiple hats A genuine interest in building meaningful products in a collaborative environment Nice to have Exposure to modern frontend technologies like TypeScript, JavaScript, and React Professional experience with ERP systems , ideally around inventory, warehouse, and logistics features Experience in fast-paced, early-stage startup environments Why Join? Backing from a globally recognised VC More ❯

in algorithms and data structures Experience with concurrent programming and asynchronous systems Familiarity with distributed systems, microservices-based architectures Commitment to clean, disciplined software engineering practices Proficiency in Go, JavaScript, Java, C++ or other similar statically typed languages Why Apply? Technically challenging projects in a highly collaborative, engineering-led environment Greenfield and business-critical development with rapid release cycles Flat More ❯

working with relational databases or CRM Systems - Experience working in a consultancy environment would be ideal - Experience working with project based work - Skills in SQL, HTML, CSS, SSRS and JavaScript - Experience working within non-profit backgrounds would be desirable REF: AR129394Tiger is B Corp Certified. We are part of a global movement of businesses committed to improving social and environmental More ❯

of hands-on experience in IT Operations, including IT asset lifecycle management, infrastructure (networking, servers), and IT Helpdesk Demonstrable development/scripting skills in at least one language (Python, JavaScript, C#) Proven experience building solutions with the Microsoft Power Platform Familiarity with Azure or AWS A strong interest in AI/LLMs. Practical experience with Dify, or building RAG applications More ❯

least 5 ServiceNow CIS certifications . Proficiency across multiple ServiceNow product lines beyond ITSM (e.g. ITOM, ITAM, HR, CSM, SPM, HAM/SAM). Strong scripting and integration skills - JavaScript, SQL, API/Web Services . Experience integrating ServiceNow with cloud platforms such as AWS, Azure, or GCP. Proven ability to operate as a Technical Design Authority and influence key More ❯

culture that values different perspectives, encourages career growth, and supports work-life balance. Tech environment (not required, just context for a tech agnostic individual at this level) Node.js/JavaScript Go, Python (selective use) Docker, Terraform GitLab Google Cloud (GCE, Cloud Run, BigQuery, Composer, ...) LLM (VertexAI) n8n Cavendish (Recruitment) Professionals Ltd are proud to be an equal opportunity employer More ❯

escalations. • Maintain basic network and Wi-Fi troubleshooting capability. Skills & Experience Essential: • 2–4 years’ experience as a Shopify Developer (Shopify Plus experience a bonus). • Strong HTML, CSS, JavaScript, Liquid templating, and Shopify CLI skills. • Experience integrating third-party apps and APIs into Shopify. • Ability to work with and manage external development teams, including understanding version control, branching, and More ❯

warehousing solution preferrably Snowflake. Excellent data modelling and analytics techniques preferrably dbt (for transforming raw data into meaningful insights within modern data warehouses) Strong Python and SQL coding skills. JavaScript is a plus but not required. Experience implementing development best practices including writing automated testing and CI/CD deployment. Responsibilities : Build and maintain reliable data pipelines and ETL processes More ❯

with experience in a technical lead role Experience developing large-scale business-critical SaaS applications In-depth knowledge of the React and React Native frameworks Excellent programming skills in JavaScript, preferably with TypeScript and GraphQL experience A good understanding of the Android and iOS platforms Experience with frontend testing frameworks Familiarity with modern front-end build pipelines and tooling Understanding More ❯

Contribute to design discussions and provide technical input on feasibility and implementation Continuously improve app retention and engagement through thoughtful UX improvements Requirements Technical Expertise: Expert-level proficiency in JavaScript and relevant frameworks such as Next.js Design Sensibility: Demonstrated passion for exceptional UI/UX design, animations, and micro-interactions Mobile Development: React Native experience would be helpful, but is More ❯

ServiceNow in Development Experience in 3 product lines outside of ITSM (e.g. ITOM, ITAM, HAM/SAM, SPM, HR, CSM, etc.) Ability to demonstrate advanced scripting and integration skills – JavaScript, SQL, API Web Services Experience integrating ServiceNow with Cloud Infrastructure (e.g AWS, Azure, GCP) Security Clearance is desirable, or the ability to obtain SC clearance is required. What’s in More ❯

current digital marketing trends and best practices on topics such as personalization, cross channel marketing, mobile, and data driven optimization of experiences. Functional knowledge of client-side development in JavaScript or native mobile apps, and front-end debugging. Agile experience and familiarity with JIRA and Confluence. History of successful technical consulting or architecture engagements with large-scale customers or enterprises. More ❯

will work with their product team to design, code and test their platform, while also working together with their customers and partners Key requirements: 2+ years’ experience working with JavaScript and React. Experience working with Python. Experience working with Django. AWS. Bonus if you have worked in start-ups before. If you’re a Junior-Mid Fullstack Engineer (React, Python More ❯

London and are planning on moving more central. The team tend to work 1 or 2 days a week in the office. Requirements Strong background in Ruby Experience with JavaScript – React/Vue.js Knowledge of cloud based technologies – AWS/GCP/Azure Advocate of TDD Knowledge of Postgres or MongoDB would be advantageous Bonus points for Hotwire, Stimulus, Turbo More ❯

roadmap development and innovation (approx. 30%) Challenging and improving engineering practices as the team scales YOUR SKILLS AND EXPERIENCE Strong GCP experience needed BigQuery + SQL knowledge Typescript/Javascript/Node.js ideal Python exposure Ideally agency or consultancy background Strong understanding of digital media data Confidence building solutions independently and rapidly BENEFITS Salary up to £75,000 Discretionary bonus More ❯

Skills: Proven experience in both manual and automated testing of complex financial systems In-depth knowledge of investment banking products, trade flows, and financial applications Expertise in SQL, Python, JavaScript, and test management tools such as XRAY and JIRA Strong analytical and problem-solving skills, with a track record of effective test coordination and stakeholder management Familiarity with ISTQB certification More ❯

of c.80 people. This is a key role in this small team and as such has broad requirements that balance current, hands on coding experience (C# back end and JavaScript/Angular front end) with architecture responsibilities and oversight of devops/infrastructure. There is also line responsibility for an offshore development team (currently 7 but includes leads). The More ❯

for someone with a great attitude who is happy to go the extra mile. Skills and experience: 5+ years of professional experience as a software engineer. Ideally, experience with JavaScript/Typescript and GCP Strong system design experience. Able to explain architectural trade-offs. Strong backend development skills and experience designing resilient systems. Strong experience building secure and performant REST More ❯