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

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.

Requirements 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-traditional 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.

Benefits

• 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.

Seniority level: Mid‑Senior level

Employment type: Contract

Job function: Other – Industries: IT Services and IT Consulting

Referrals increase your chances of interviewing at ECA International by 2x.

Location: London, England, United Kingdom.

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.

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