Junior Hydraulics & Drainage Engineer

AECOM’s Enterprise Capabilities team is looking for a Junior Hydraulics & Drainage Engineer to join our team in Madrid.

About Enterprise Capabilities

Fundamental to our Think and Act Globally strategy and digital adoption, Enterprise Capabilities (EC) is AECOM’s primary vehicle for workshare. Operating across geographic boundaries and time-zones, EC partners with regional and Global Business Line project teams to provide technical expertise, accelerate delivery and keep AECOM competitive in the industry.

With a team of over 3000 technical professionals located across nine countries and remote technical anchors, EC teams are trusted to deliver high-quality, specialist services that help to fill capability gaps, resourcing needs and technical constraints on projects of all scopes and sizes.

Start here. Grow here.

We are currently looking to hire a Junior Engineer with some experience in Hydraulics and Drainage design, to join our supportive and highly skilled team. The team provides assessment, concept, feasibility, preliminary and detailed designs on a wide range of projects. Our clients work for private and public sector and include long term Framework Agreements with numerous Local Authorities together with Design and Build commissions for many major Contractors. Our group has an established track record of successfully delivering water designs for many years, throughout the US, Canada, Australia and New Zealand among others. You may have the opportunity to work on some of the most iconic Transportation and Water projects, being part of a diverse and multicultural team for Enterprise Capabilities.

In this role, you’ll support the design and development of Sustainable Urban Drainage Systems (SuDS) and hydraulic projects, working closely with senior team members and contributing to high‑quality engineering deliverables. Your main responsibilities will include:

• Apply and follow established CAD standards and procedures for SuDS projects, ensuring accuracy and consistency.
• Perform self-checks of your own deliverables and participate in quality reviews of documents prepared by peers.
• Assist in CAD drafting and design for SuDS elements across a variety of urban water projects.
• Conduct basic Hydraulics & Hydrology (H&H) calculations, including runoff estimations, flow routing, and detention basin sizing.
• Support the preparation of technical documentation, design reports, and presentations for project teams.

This role gives you hands-on exposure to real engineering work while being supported by an experienced team that values learning, quality, and innovation.

Why is this role great for early‑career engineers

• You’ll work closely with senior engineers who mentor, guide, and share knowledge.
• You’ll gain exposure to real projects with tangible environmental impact.
• You’ll develop your technical expertise in SuDS, CAD, and H&H tools—skills in high demand.
• You’ll be part of a supportive, quality‑driven team where your ideas are valued.