Javascript Developer
On site
London, United Kingdom
£ 125,000 / year
Freelance
03-03-2025
Job Specifications
Job Title: Full-Stack JavaScript Engineer (Contract – Up to £550/Day)
Location: Remote (UK-based) / Hybrid (London)
Contract Length: 6 Months (with potential extension)
Rate: Up to £550 per day (Outside IR35)
Start Date: ASAP
About the Role:
We are seeking a highly skilled Full-Stack JavaScript Engineer to join our team on a contract basis. You will be working on a range of exciting projects, developing scalable web applications and contributing to both frontend and backend development. This role is ideal for someone who thrives in a fast-paced environment, enjoys solving complex problems, and is comfortable working independently or within an agile team.
Key Responsibilities:
Develop and maintain full-stack applications using modern JavaScript technologies.
Build robust and scalable backend services with Node.js (Express/Nest.js).
Develop responsive and dynamic frontend applications using React.js or Vue.js.
Design and optimize databases (SQL or NoSQL such as PostgreSQL, MongoDB).
Write clean, maintainable, and efficient code following best practices.
Implement and integrate RESTful APIs and GraphQL endpoints.
Work with cloud platforms such as AWS, Azure, or Google Cloud for deployment and hosting.
Ensure application security, performance, and scalability.
Participate in agile ceremonies, including daily stand-ups, sprint planning, and retrospectives.
Skills & Experience Required:
Strong proficiency in JavaScript (ES6+), TypeScript, and modern frontend frameworks (React.js, Vue.js, or Angular).
Experience building RESTful APIs and working with Node.js and backend frameworks (Express.js, Nest.js, or Koa).
Solid understanding of database design and experience with SQL (PostgreSQL, MySQL) or NoSQL (MongoDB, Firebase) databases.
Knowledge of authentication & authorization protocols such as OAuth, JWT.
Experience with cloud services (AWS, Azure, or GCP) and CI/CD pipelines.
Familiarity with containerization tools like Docker and orchestration tools like Kubernetes (nice to have).
Experience with testing frameworks (Jest, Mocha, Cypress).
Strong problem-solving skills and the ability to work independently.
Nice to Have:
Experience with serverless architecture (AWS Lambda, Firebase Functions).
Knowledge of WebSockets, real-time applications, and event-driven architectures.
Familiarity with DevOps practices, Terraform, or Kubernetes.
Why Join?
Competitive day rate up to £550 per day (Outside IR35).
Fully remote or hybrid working options.
Work on exciting, cutting-edge projects in a dynamic team.
Opportunity to extend the contract based on performance.
Interested? Apply now with your latest CV and availability!
About the Company
Proven experience working with Marketing and Software Development Professionals. We specialise in Paid Social, SEA/SEM, SEO, Content, Marketing Professionals in London and Berlin Know more
Related Jobs
- Company Name
- Falcon Smart IT (FalconSmartIT)
- Job Title
- Python Backend Developer
- Job Description
- Job Title: Python Backend Developer Job Type: Contract Job Location: London , UK Job Description: Python Backend Developer: We need a senior developer with extensive knowledge on building scalable python back-ended solution. For example, how to support dozens of concurrent requests, how to handle occasional dead pod, etc. We need someone help us check our implementation and see if there are problems that we aren't aware of. More importantly, implement solutions that resolve these issues. Python API frameworks Async process with python, message broker Python software development Kubernetes Pod management Microservices Good to have: Openshift Cosmos DB Azure Blob Storage
- Company Name
- OneAPPS Consulting
- Job Title
- Developer - Cobol/Oracle
- Job Description
- OneAPPS Consulting (www.oneapps.com) is a Technology consulting firm based out of London and offices across Europe. We are working on various projects involving diverse, multicultural teams with clients across the Europe. We are an invaluable partner and our teams have collaborated to support the growth of our clients. With more than 7 locations worldwide we help our clients to deliver their projects smoothly. We look forward to getting to know you and working with you. Developer - Cobol/Oracle/Plsql Location: Leeds - Hybrid Job Description: Develop, document, and test software and configuration, ensuring they adhere to development standards and meet business requirements. You’ll be technically competent and experienced in applicable technologies and platforms Maintain systems by analysing programs to diagnose and resolve live defects/ incidents Participate in peer reviews of documentation, code, unit, and integration testing Collaborate with architects, analysts, and product owners to transform business requirements into technical change, including performing impact analysis Continually update technical knowledge and skills using internal training as well taking time to self-develop Perform impact analysis and estimation on requirements and designs Ensure that system design meets the standard for architecture, scalability, performance, security and maintainability Skills/Experience: Knowledge of one or more of the core technologies including: Cobol ideally using a COBOL IT compiler, Oracle SQL, PL/SQL, Forms and Perforce. Strong documentation skills for granular level understanding of the processing in some key database packages and Cobol modules. Ability to interpret complex information to develop solutions that meet the required business outcomes Great communicator finding ways for non-technical people to understand technical concepts Experience delivering software change within Financial Services and an awareness of operating in a highly regulated environment Desirable skills - Knowledge, understanding and experience of developing software in a DevOps delivery methodology setting. If this role sounds like you, we invite you to apply. Thanks. Due to work permit restrictions, we can only consider applications from UK, EU citizens as well as current work-permit holders for UK.
- Company Name
- Stealth IT Consulting
- Job Title
- Android Developer
- Job Description
- Rate: £550 per day (Outside IR35) Duration: 6+ Months Start Date: ASAP Location: Remote 1-stage interview process! All candidates need to have a Government Background Key Responsibilities: Develop, test, and deploy Android applications in secure environments. Collaborate with cross-functional teams to define, design, and implement new features. Ensure the performance, quality, and responsiveness of applications. Identify and fix bugs, ensuring the security and stability of the applications. Work with APIs, third-party libraries, and frameworks. Maintain and improve code quality through best practices, including code reviews and unit testing. Stay up-to-date with the latest industry trends and Android development best practices. Essential Skills & Experience: Proven experience in Android development using Kotlin and/or Java. Strong understanding of the Android SDK, Android Studio, and Jetpack components. Experience with RESTful APIs, GraphQL, or other web services. Knowledge of secure coding practices and experience working in secure environments. Familiarity with CI/CD pipelines and version control (Git). Experience with testing frameworks such as Espresso, JUnit, or Mockito. Understanding of Agile methodologies and experience working in Agile teams. Desirable Skills: Experience working with government, defense, or highly regulated sectors. Knowledge of mobile security protocols and encryption methods. Experience with containerization (Docker, Kubernetes) and cloud services (AWS, Azure, GCP). Familiarity with DevOps practices and automation tools. Exposure to cross-platform frameworks like Flutter or React Native.
- Company Name
- Ubique Systems
- Job Title
- Cloudera Developer
- Job Description
- Cloudera Developer Location - London (Hybrid - 2days weekly from Office) Job Type - Contract (Inside IR35) Job Description : Good Big Data resource with the below Skillset: Cloudera Spark Scala • Experience in Big data technologies , real time data processing platform(Spark Streaming) experience would be an advantage. • Consistently demonstrates clear and concise written and verbal communication • A history of delivering against agreed objectives • Ability to multi-task and work under pressure • Demonstrated problem solving and decision-making skills • Excellent analytical and process-based skills, i.e. process flow diagrams, business modelling, and functional design.