Senior Frontend Engineer

Work with Us. Change the World. At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

In AECOM’s AI Engineering team your code will directly shape the physical world around us. We build AI-driven technology that revolutionises how infrastructure and buildings are designed and engineered; reducing waste, cutting CO₂, and making the built environment more efficient and sustainable. This is where software has measurable, real-world impact.

What You’ll Do:

• Design, build, and maintain rich, interactive user interfaces using Svelte and React (TypeScript), delivering production-grade frontend experiences that surface complex AI and engineering data.
• Collaborate closely with product managers, ML engineers, and backend engineers to define and ship high-impact frontend features end-to-end.
• Translate complex AI and engineering outputs into clear, interactive, and highly usable components with strong attention to UX, performance, and accessibility.
• Own frontend architecture decisions including state management, component design, and design system development.
• Drive technical excellence by improving frontend architecture, performance and bundle optimisation.
• Take ownership of frontend features from concept to deployment, influencing product direction, interaction design, and technical trade-offs.
• Build high-performance, interactive 2D and 3D web experiences for complex engineering visualisations.

Qualifications:

Must-Haves:

• Proven and demonstrable hands‑on experience building production applications with TypeScript (Svelte or React).
• Degree in computer science, software engineering, or a related technical field or equivalent demonstrable experience.
• Deep understanding of modern frontend architecture, component design patterns, and state management.
• Experience consuming and integrating REST APIs and real‑time data into frontend interfaces.
• Familiarity with frontend build tooling (Vite, SvelteKit, or similar) and testing frameworks.

Preferred Skills:

• Experience writing automated tests (unit, integration, e2e).
• Familiarity with Python backend services (enough to read, debug, and contribute to APIs you consume).
• Knowledge of design systems and frontend architecture best practices.

Benefits:

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absence, voluntary benefits, perks, flexible work options, well‑being resources, employee assistance programme, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.

We are a Disability Confident Employer and will offer an interview to applicants who have a disability or long‑term condition, who meet the minimum/essential criteria for the role.