Full-Stack Engineer - 6-month contract - Immediate Start

The ECA International Group; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A leading international solutions provider is seeking a Full-Stack Engineer to lead complex technical projects. This role involves guiding the development of scalable applications, collaborating with cross-functional teams, and championing AI-led innovation. The ideal candidate will have hands-on experience with React, Node.js, and cloud architectures. This position offers a hybrid working model with opportunities for mentorship and professional growth, contributing to the company's ambitious goals in a collaborative environment.

Benefits

Opportunities for professional development

Hybrid working model

Inclusive company culture

Qualifications

• Proven experience building scalable, high-performance full-stack applications.
• Strong hands-on experience with React, Tailwind CSS, Node.js, and TypeScript.
• Solid understanding of microservices and modular architecture.
• Strong experience with RESTful and GraphQL APIs.
• Deep understanding of AWS and cloud-native architectures.
• Experience working with LLMs, embeddings, and RAG-based architectures.

Responsibilities

• Guide the design, development, and implementation of scalable solutions.
• Build partnerships with product, business, and technology stakeholders.
• Champion an AI-first development mindset integrating AI into SDLC.
• Mentor engineers and foster a culture of collaboration and innovation.

Skills

Full-Stack Applications

React

Node.js

TypeScript

Cloud-Native Architectures

APIs

Containerization

DevOps Best Practices

Performance Tuning

Tools

AWS

Docker

Kubernetes

Terraform

PostgreSQL

NoSQL Databases

Job description

About Us:

The ECA International Group is a global leader in providing solutions to facilitate international mobility. Our commitment to innovation, excellence, and customer satisfaction has enabled us to serve numerous large enterprises around the world.

Joining our team means becoming part of an inclusive and diverse community, where your talents are nurtured, and your career growth is prioritised. With offices in the UK, Hong Kong, Australia, and the U.S., we offer opportunities for global collaboration and professional development.

Job Overview:

We’re looking for a Full-Stack Engineer who combines deep technical expertise with leadership, curiosity, and a passion for AI-led development.

If you enjoy owning complex systems end-to-end, mentoring engineers, and working in a fast-paced environment where innovation matters, this role is for you.

Technical Leadership & Delivery

• Guide the design, development, and implementation of scalable, high-performance solutions.
• Partner with tech leads to ensure alignment with engineering best practices, architectural standards, and ECA’s client objectives.
• Drive strong technical decision-making, task prioritisation, and resource management to meet project deadlines.

Cross-Team Collaboration

• Build strong partnerships with product, business, and technology stakeholders.
• Translate business requirements into robust technical solutions while adapting your approach based on stakeholder needs.
• Communicate complex technical concepts clearly to both technical and non‑technical audiences.

AI-Led Development & Innovation

• Champion an AI-first development mindset, integrating AI tools into the SDLC for code generation, testing, debugging, and optimisation.
• Design and implement AI-powered capabilities, including RAG workflows, intelligent search, and recommendation systems.
• Stay ahead of emerging trends in AI and full‑stack development, and apply them to real-world solutions.

Mentorship & Growth

• Mentor and support engineers, fostering a culture of collaboration, innovation, and continuous improvement.
• Lead by example with a proactive, solution‑oriented mindset.

What You Bring:

Full-Stack Engineering

• Proven experience building scalable, high‑performance full‑stack applications.
• Strong hands‑on experience with React, Tailwind CSS, Node.js, and TypeScript.
• Solid understanding of microservices and modular architecture.

APIs, Data & Integrations

• Strong experience with RESTful and GraphQL APIs.
• Hands‑on experience with middleware and orchestration tools such as Tachyon, Temporal, or similar platforms.
• Experience with data ingestion, pipeline management, and distributed systems.

Databases & Performance

• Proficiency in PostgreSQL, Snowflake, and NoSQL databases.
• Experience with vector databases to support AI‑driven features.
• Strong skills in performance tuning, monitoring, and optimisation.

Cloud & DevOps

• Deep understanding of AWS and cloud‑native architectures.
• Experience with Docker, Kubernetes, Terraform, and CI/CD pipelines.
• Strong grasp of DevOps and infrastructure automation best practices.

Security & Reliability

• Knowledge of secure coding practices, data privacy, and compliance requirements.
• Experience building reliable, production‑ready systems at scale.

AI Experience

• Experience working with LLMs, embeddings, LangChain, and RAG‑based architectures.
• Familiarity with AI‑driven automation to improve engineering efficiency.

Why Join ECA?

• Work on innovative, AI‑powered full‑stack solutions
• Lead and influence high‑impact engineering initiatives
• Be part of a collaborative, fast‑moving, and forward‑thinking team
• Continuous learning and growth in an evolving AI environment

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.