Senior Full-Stack Developer (6-Month Contract)

The ECA International Group; City Of London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading global organization based in London seeks a Senior Full-Stack Developer for a 6-month contract. The successful candidate will lead technical direction across teams, mentoring developers while promoting an AI-first approach. Key skills required include Node.js, JavaScript, TypeScript, React, and Agile methodologies. This hybrid role allows for flexibility with office attendance twice a week.

Benefits

Flexible working hours

Creative workspace

Collaborative team environment

Qualifications

• 8+ years of professional experience in software development.
• Demonstrable technical leadership experience.

Responsibilities

• Lead and mentor developers, fostering a high-performing team environment.
• Set the technical vision and enforce development best practices.
• Own the end-to-end delivery of key projects.

Skills

Node.js

JavaScript

TypeScript

React

Agile methodologies

SQL/NoSQL databases

CSS

AI integration

Cloud-based applications

Test-driven development

Education

Bachelor's degree in Computer Science or related discipline

Tools

GitHub

AWS

PostgreSQL

GraphQL

Terraform

Job description

About Us

As a leading group of companies, the ECA International Group stands as a global frontrunner in simplifying international mobility. Our collective vision is to make a positive impact by delivering exceptional products and services to our prestigious list of large enterprise clients.

Our global presence across the UK, EU, Hong Kong, Australia, and the US offers our team a world of opportunities, and our commitment to innovation ensures that you will be at the leading edge of your field.

We love to invest in our people’s success and development pathways, creating a diverse and inclusive community where your unique talents shine. Your work here has a global impact, and we prioritise work-life balance, offering flexibility to enable you to perform your best. Join us to experience a rewarding career where your potential is celebrated, and your journey to excellence begins.

About the Role

We are seeking a highly skilled and experienced Senior Full-Stack Developer (6-month contract) to join our Technology & Engineering team at ECA International. This is a hands-on role suited to a self-starter with strong technical expertise and a passion for building robust, scalable solutions using Node.js, JavaScript/TypeScript, and React.

The successful candidate will be responsible for guiding technical direction, mentoring developers, fostering a high-performing team culture, and owning end-to-end project delivery. You will lead by example, driving best practices in software development while promoting an AI-first approach to improve productivity and innovation across the development lifecycle.

This is an exciting opportunity for someone who thrives on building quality software, collaborating across teams, and shaping both technical and team strategy.

Key Responsibilities

• Team Leadership: Lead and mentor developers, fostering a collaborative, inclusive, and high-performing team environment.
• Technical Direction: Set the technical vision, enforce development best practices, and guide the use of appropriate technologies.
• Project Delivery: Own the end-to-end delivery of key projects, ensuring timely and high-quality outputs.
• Agile Practices: Champion Agile methodologies and lead Agile ceremonies, ensuring the team follows iterative, value-driven delivery.
• Architecture: Design and develop scalable, maintainable, and testable applications with sound architectural principles.
• Technical Solutions: Translate business needs into effective technical solutions in collaboration with product managers and stakeholders.
• Continuous Improvement: Promote a culture of continuous learning, technical excellence, and innovation.
• AI Integration: Advocate and adopt AI tools and technologies to improve software development productivity and build AI-powered solutions.
• Recruitment: Support the hiring process by participating in interviews and onboarding new team members.

The Ideal Candidate

Qualifications:

• Bachelor's degree in Computer Science, Software Engineering, or a related discipline – or equivalent practical experience.
• 8+ years of professional experience in software development, with demonstrable technical leadership.

Essential Experience:

• Strong hands-on experience with Node.js, TypeScript/JavaScript, React (or Remix), SQL/NoSQL databases, and CSS.
• Proven track record of leading Agile development teams.
• Experience designing and building cloud-based, scalable applications.
• Familiarity with test-driven development (TDD) and version control systems (e.g., GitHub).
• Strong communication skills with an ownership mindset and a focus on delivering high-quality outcomes.

Desirable Experience (Nice to have):

• Experience with AWS, Tailwind CSS, PostgreSQL, Express, GraphQL, Terraform, .NET Core, or C#.
• Familiarity with multi-tenanted architecture and accessibility standards.
• Knowledge of mobile application development.
• Enthusiasm for using AI development tools (such as AI-powered IDEs) and developing AI-driven applications.

Skills and Behaviours

• Technical Expertise: Deep knowledge of full stack development using modern technologies.
• Leadership: Ability to inspire and develop others, with a proven record of team leadership.
• Agile Mindset: Strong understanding of Agile methodologies with practical experience in leading Agile teams.
• Communication: Effective communicator able to translate technical details for non-technical stakeholders.
• Continuous Improvement: Driven by quality and committed to ongoing technical and personal development.
• Problem-Solving: Proactive and innovative in overcoming technical challenges.
• Ownership: High sense of accountability with a focus on delivering results.
• AI Passion: Enthusiastic about embedding AI into software development to increase productivity and innovation.

Our Team and Culture

We are a super friendly team that thrives on collaboration and supporting each other. We cultivate an environment where everyone feels valued and empowered to contribute their best work, helping us to realise our ambitious growth goals and mission.

Our hybrid working structure includes spending around two days a week at our Head Office in Holborn, London, in a great space filled with creative, colourful.

Need a change of scenery? Our breakout areas have comfortable seating and cool décor where you can work in your own space. Not to mention, being in the hub of the West End, we’re surrounded by many cafes and restaurants and are just a hop, skip, and a jump from the tube.