1 to 25 of 57 Contract ECMAScript Jobs in London

bugs, and continuously improving. Support the automation of testing and deployment pipelines to improve release velocity and confidence. Technical Skills Required: Proficiency in modern programming languages and frameworks (e.g. JavaScript/TypeScript, Python, .NET, Node.js). Experience with frontend development (e.g. React, Angular, Hugo). Strong understanding of backend systems, API design, and system integration. Comfortable working with cloud platforms More ❯

D, implementation to automation. WE NEED THE SENIOR SOFTWARE ENGINEER TO HAVE.... Current enhanced DV clearance Experience with at least one of the following: Java, Python, C++, C#, .NET, JavaScript, React Experience mentoring juniors or leading teams is nice to have but not essential Experience/Knowledge of automation IT WOULD BE NICE FOR THE SENIOR SOFTWARE ENGINEER TO HAVE.... More ❯

to meet them Excellent problem-solving skills and the ability to independently perform root cause analysis. Must have: Web applications expertise using modern web technologies (e.g. CSS, HTML, HTML5, JavaScript, jQuery). Knowledge in UX design principles and ability to apply them when building applications/solutions. Knowledge in database modelling and SQL programming (e.g. joins, count, group by, indexes More ❯

Zereheight for design systems. Experience creating automation processes for component governance. In-depth knowledge of design patterns, UI/UX principles, and front-end technologies such as HTML, CSS, JavaScript, and BeastNative. Strong understanding of software architecture principles. Experience with version control systems (e.g., Git), package managers, and dependency management tools. Excellent communication and interpersonal skills, with the ability to More ❯

implementations. Support the development and evolution of CoE standards and reusable engineering assets. Required Skills and Experience Proven experience developing enterprise-grade applications using Angular or React. Proficiency in JavaScript/TypeScript, HTML5, CSS3, and modern frontend development tooling. Demonstrated ability to design secure, performant, and accessible frontend architectures. Experience integrating with RESTful APIs and backend services. Prior experience working More ❯

working with RESTfulAPIs (FastAPI, Flask, or similar) Awareness of MongoDB or similar SQL solutions Nice-to-have: Experience with Docker and/or Kubernetes Exposure to Vue.js or other JavaScript frameworks like React or Angular Even if you don’t tick every box, strong Python developers with cloud and API experience still want to discuss it just in case...still feel More ❯

and customising Open Source VTC and Chat capabilities would be advantageous. Understanding of real-time communication protocols (WebRTC, SIP, STUN/TURN). Proficiency in scripting and programming (e.g., JavaScript/Node.js, Python, Bash). Experience with Linux system administration, networking, and firewall configuration. Familiarity with cloud platforms (AWS, Azure, GCP) or private/on-premise Kubernetes clusters. Knowledge of More ❯

Engineer or in a similar role. AWS Expertise: Strong proficiency in AWS services, especially Amazon Lex and other AI/ML services. Programming Skills: Proficient in TypeScript and modern JavaScript frameworks. DevOps Knowledge: Solid understanding of DevOps methodologies and tools (CI/CD, Serverless, Monitoring). Contact Centre Tech: Experience with contact centre technologies and integrations. Problem Solver: Exceptional problem More ❯

Engineer or in a similar role. AWS Expertise: Strong proficiency in AWS services, especially Amazon Lex and other AI/ML services. Programming Skills: Proficient in TypeScript and modern JavaScript frameworks. DevOps Knowledge: Solid understanding of DevOps methodologies and tools (CI/CD, Serverless, Monitoring). Contact Centre Tech: Experience with contact centre technologies and integrations. Problem Solver: Exceptional problem More ❯

Proven experience as a Senior Software Engineer or similar role. Strong expertise in AWS services, particularly Amazon Lex and other AI/ML services. Proficiency in TypeScript and modern JavaScript frameworks. Solid understanding of DevOps methodologies and tools (e.g., CI/CD, Serverless, Monitoring). Experience with contact centre technologies and integrations. Excellent problem-solving skills and the ability to More ❯

Proven experience as a Senior Software Engineer or similar role. Strong expertise in AWS services, particularly Amazon Lex and other AI/ML services. Proficiency in TypeScript and modern JavaScript frameworks. Solid understanding of DevOps methodologies and tools (e.g., CI/CD, Serverless, Monitoring). Experience with contact centre technologies and integrations. Excellent problem-solving skills and the ability to More ❯

Experience 5+ years in professional software development. Expert in C++11 or later , with a strong grasp of memory management, OOP, and concurrency. Skilled in AngularJS , HTML/CSS , and JavaScript . Experience with REST APIs , JSON, and version control (Git). Solid understanding of Agile frameworks (Kanban, Scrum). Why Join Us? Work on industry-defining self-service technologies Collaborate More ❯

on integration with Integra (finance), Axiom (budget management), Northgate/Zellis (HR and payroll) or similar finance/HR systems via REST or OData APIs Proficient in Power Fx, JavaScript/TypeScript, .NET C#, T-SQL, DAX and JSON Experience with Azure Functions, Logic Apps, Service Bus, API Management and DevOps pipelines More ❯

knowledge of its ecosystems * Familiarity with the .NET including .NET 6 onwards. * Solid experience with relational databases. * Familiarity with MVC and WebAPI * Front end development skills including HTML, CSS, JavaScript, jQuery. * Proficient understanding of code versioning tools including GIT * Strong understanding of object-oriented programming * Skill for writing reusable C# libraries. * Familiar with various design and software architectural patterns. * Understanding More ❯

knowledge, enterprise integration patterns• Experience in Jira, Confluence, Rabbit MQ, Apache Camel, DevOps• Experience developing and implementing systems using Agile/Scrum methodology• Experience with working or developing with JavaScript - HTML5, Jelly, jQuery and AngularJS a plus More ❯

London-based Financial Services client who are actively seeking 2 Senior software engineers to join a market-leading team. What you'll need to succeed Extensive development experience with Javascript, Typescript, React, and NextJS. Strong Fullstack development experience. Strong experience with a range of technologies including cloud. Good experience managing large data sets. Strong experience working in a highly agile More ❯

London-based Financial Services client who are actively seeking 2 Senior software engineers to join a market-leading team. What you'll need to succeed Extensive development experience with Javascript, Typescript, React, and NextJS. Strong Fullstack development experience. Strong experience with a range of technologies including cloud. Good experience managing large data sets. Strong experience working in a highly agile More ❯

Logic Apps, Event Grid, etc.) Strong C# development skills including async and event-driven programming Knowledge of Dataverse, Azure SQL, and Cosmos DB Automation scripting in PowerShell, Python, or JavaScript Familiarity with Power Platform tools: Power Apps, Power Automate, Power BI Understanding of enterprise cloud security and compliance Integration Engineer | Azure | D365 | C# API - Contract RSG Plc is acting as More ❯

Collaborating with cross-functional teams to deliver scalable solutions Mentoring junior engineers and contributing to a strong engineering culture Working with a modern, cloud-native stack Tech Stack Languages: JavaScript, Node.js Databases: SQL, PostgreSQL, BigQuery Cloud: AWS (Lambda, S3, Kinesis, RDS, Step Functions, AppFlow) DevOps: Serverless, Heroku, GitHub, CircleCI Monitoring: Graphite, Grafana, Splunk Bonus: Experience in marketing tech or AI More ❯

IR35 - £650-700/day I'm working with a consultancy delivering into a long-term, high-security programme seeking a Full Stack Developer with strong experience across modern JavaScript/Typescript stacks. You'll split your time 50/50 between Front End and Back End development, contributing to a multi-year transformation project. SC clearance required Strong experience More ❯

working with RESTful APIs (FastAPI knowledge is a bonus) Familiarity with cloud platforms (GCP preferred, but AWS/Azure fine) Awareness of MongoDB Bonus: Docker/Kubernetes and any JavaScript framework (Vue ideal) Even if you feel you don’t tick every box but you're immediately available and ready to hit the ground running, please apply anyway and we More ❯

management Strong attention to detail and ability to multitask Strong leadership and mentoring skills Proven track record of successful Salesforce projects Strong understanding of web development concepts and languages (JavaScript, HTML, CSS) Ability to work well in a team environment All profiles will be reviewed against the required skills and experience. Due to the high number of applications we will More ❯

management protocols Provide expert guidance across multiple technology platforms WHAT WE'RE LOOKING FORESSENTIAL EXPERIENCE: Strong Power Platform development experience with comprehensive knowledge of the ecosystem C# .NET and JavaScript expertise for custom development and integrations HCL Notes/Lotus Notes experience - additional legacy system capabilities Canvas and Model-driven Power Apps knowledge - full low-code understanding would be ideal More ❯

IQ versions 5.5 to 7.5, DataNet, Oracle, SQL Server, DB2, Cognos, Power BI, and various query tools. Knowledge of coding languages such as PL SQL, Java, VB, VBA, HTML, JavaScript, and basic Python. oCertifications: Finastra certified Implementer (FCI) for Loan IQ V7.5, Finastra Loan IQ User Training, Cognos series certifications. oSoft Skills: Strong stakeholder management, agile project management, and team More ❯

data processing Stakeholder engagement skills - comfortable working directly with business users Problem-solving expertise with ability to understand complex business needs BONUS SKILLS: PHP experience - additional web development capabilities JavaScript knowledge - full-stack understanding would be ideal Services offered by Computappoint Limited are those of an Employment Business and/or Employment Agency in relation to this vacancy More ❯