1 to 25 of 39 Permanent JavaScript Jobs in Doncaster

Event-driven, microservices-oriented design Cloud: Azure (AWS experience valued), Infrastructure-as-Code Data: SQL, caching strategies, message brokers (RabbitMQ, etc.) Frontend: HTML, CSS, JavaScript DevOps: CI/CD pipelines, Behaviour-Driven Development, modern agile methodologies What You Bring: Senior: 6+ years of software engineering experience Principal: 10+ years ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

overview Designing and building secure, reliable backend services in Python, following TDD and automated testing practices Developing front-end features using React and modern JavaScript/TypeScript tooling Delivering cloud-native solutions on AWS, working with services such as Lambda, API Gateway, ECS and RDS Working closely with product, design ...

strong fundamentals in core programming principles Experience Required: Relevant experience in software development and familiarity with at least on programming language (C#, Python, Java, JavaScript, or similar) Excellent communication skills and the confidence to engage directly with users and stakeholders A self-motivated and proactive developer who takes initiative Comfortable ...

long-term reliability What We're Looking ForRequired: · 2+ years software development experience · Commercial experience with Angular (v10+) · Strong proficiency in TypeScript and JavaScript · Familiar with RxJS and reactive programming concepts · Experience working with APIs (REST or GraphQL) · Some Node.js back-end experience (or willingness to grow in that area ...

continuously improve solution design and delivery. Required Skills & Experience Strong commercial experience with Node.js for backend development. Front-end development experience using modern JavaScript frameworks (e.g. React, Vue, Angular). Experience designing and building data-driven web applications and APIs. Solid understanding of software development best practices, security, and scalability. ...

introduce new ideas — the team value curiosity and quality. In the role you will: Designing and building new features using CFML (ColdFusion or Lucee), JavaScript and jQuery Improving speed, performance and security across the platform Reviewing code, sharing best practice, and supporting the team Working closely with product and engineering ...

days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech: Python, JavaScript, Azure, AWS, AI, LLM's, RAG Industry: AI Consultancy The Role We're looking for talented engineers to join our customer-facing AI practice, from Senior ...

external developers Contribute to technical decisions and best practices Essential Requirements 3+ years commercial software development experience Strong Ruby on Rails and modern JavaScript skills Front-end experience (HTML, CSS/SASS) Experience with PostgreSQL Git and Agile workflow experience ...

delivering performant, user-focused solutions. Responsibilities Build and maintain backend services and APIs using PHP/Symfony Contribute to front-end development using modern JavaScript frameworks (Angular preferred) Collaborate closely with product, design, and engineering teams Participate in code reviews, testing, and quality assurance Contribute to architectural decisions and technical ...

towards Professional level preferred) Deep technical understanding of Amazon Connect architecture and CX ecosystems Strong communication and leadership skills Nice to Have Python or JavaScript development experience Advanced use of Infrastructure as Code Knowledge of integration patterns with external systems and APIs Experience building CI/CD pipelines for contact ...

high availability and at high scale. Good knowledge of Linux - command line usage, BASH scripting etc. Demonstrate a working development background: programming knowledge of JavaScript and either PHP or NodeJS. Experience building to best practices using techniques such as CI/CD and infrastructure as code. Experience of delivering public ...

Processes (fka Integration Procedures) OmniScripts Skills in Apex (triggers, batch, web services) Integration Experience is beneficial (Mulesoft/APIGEE/Connected Apps) Experience of JavaScript/Lightning components Basic understanding of Apex sharing and security model Experienced with Lightning Web Components Skills in analysing and problem-solving issues Experience ...

product suite, contributing to the design, development, and delivery of innovative software. Our tech stack includes C# (.Net Core), MySQL, HTML/CSS, JavaScript, and containerized workloads in AWS. What you'll do At Optum UK, we believe in the power of technology to make healthcare faster, better, and more … someone with: Strong proficiency in C#, .Net Core, and MVC. Experience designing and developing RESTful APIs. Solid front-end skills including HTML, CSS, JavaScript, and React. Familiarity with microservices and containerization (Docker, Kubernetes). Experience with AWS and cloud-based deployments. Proficiency with MySQL and writing efficient SQL queries. Understanding ...

complex technical hurdles. Continuous Improvement: Identify technical challenges and mitigate common digital delivery pitfalls to ensure customer satisfaction and high performance. Requirements Technical Skills Javascript: Essential experience, specifically within a low-code environment (e.g., Retool). SQL & dbt: Strong ability to use dbt and unit testing to validate advanced ...

systems engineering, technical product/program management Experience in customer-facing technical roles Strong problem-solving skills with complex systems Coding expertise in JavaScript, SQL and Python Ability to coordinate across multi-disciplinary teams Why You'll Love This Role: Work remotely from anywhere in the UK Be part ...

leadership role, managing global teams of architects, analysts, or engineers. 4. Product & Technology Depth Experience with SaaS technologies, SDKs, APIs, web applications (HTML, CSS, JavaScript), and modern integration frameworks. 5. Commercial & Strategic Acumen Demonstrated ownership of partner KPIs, optimisation initiatives, or P&L-related performance; excellent communication and stakeholder-management ...

with clarity and support on what is required to take the next step up. To be considered: Strong experience in PHP Development Experience with JavaScript/Vue/React Demonstrable experience with relevant MVC frameworks (Preferably Laravel) Experience working to SOLID principles Experience with Docker would also be a benefit ...

design and development of technical solutions using Dynamics 365 and Power Platform to meet customer requirements Develop custom components such as plugins, workflows, and JavaScript/UI extensions as needed Ensure adherence to best practices, prioritising standard product capabilities and advising when customisation or extension is necessary Collaborate with Functional ...

copy trading systems and their operational challenges • Ability to identify and explain slippage, spread variations, commission structures, and requotes Technical Skills • Programming experience (Python, JavaScript, or similar) for building dashboards and automation tools • Familiarity with cloud infrastructure monitoring (GCP preferred) • Experience with database monitoring and SQL queries • Basic understanding ...

Rate £550-650pd, Outside IR35 | 12-months Contract Length Senior-level backend experience with Python and Django in production systems Proven work with JavaScript and React (production experience strongly preferred) Familiarity with MySQL Databases and scale Strong grasp of APIs, cloud-native systems, and scalable architecture Freelance mindset: able ...

conducting security testing using OWASP ZAP and Dependency Check. Validating RESTful APIs using Postman or Newman, along with using browser developer tools (Lighthouse, JavaScript debug console, etc.) to support functional and non-functional testing. Collaborating effectively within Agile delivery teams, contributing to continuous improvement of testing practices whilst maintaining test ...

e.g. you understand colour palettes and content hierarchy At least 3 years' of experience building corporate WordPress sites Good understanding of HTML, CSS, and JavaScript ...

Skills & Experience: Proven experience as a ServiceNow Technical Lead or Senior Developer Strong understanding of ServiceNow architecture and module configuration Expertise in scripting (JavaScript, Glide, APIs, IntegrationHub) Experience with ITSM and ITOM modules (CMDB, Discovery, Event Management) Excellent stakeholder communication and leadership ability ServiceNow certifications (CSA, CAD, CIS – ITSM/ ...

selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python ...