A specialist brand for technical and built environment recruitment

We understand the sectors that build the future. Architecture, engineering, infrastructure, renewables, environmental.

Built on deep understanding of technical markets

Onyx was created to serve the technical and future-focused parts of the market , the roles and disciplines that sit across architecture, engineering, infrastructure, renewables, and the broader built environment.

We work with consultancies, developers, contractors, asset owners, energy businesses and project-driven organisations that need high-quality people in specialist roles.

As part of a wider group of specialist recruitment brands, Onyx exists to bring sharper positioning and deeper market focus to technical hiring. Rather than trying to cover everything, we focus on the markets where industry understanding, role clarity and long-term fit matter most.

Our team

James Brownlee
Director

James is a Director at Onyx Recruitment, leading the team and driving performance across the business. Since starting in recruitment in 2013, he has built a strong track record across the built environment, with a specialist focus on architecture and design.Coming from an award-winning recruitment background, James brings a commercial, no-nonsense approach to hiring. He works closely with clients and candidates on critical roles where getting it right matters - focused on solving problems rather than simply filling roles.Outside of work, you’ll find him golfing, fishing, or spending time with his kids.

Peter Stewart
Director

Peter is a Director at Onyx Recruitment, responsible for driving strategy, growth, and overall business performance. Since entering recruitment in 2013, he has built a strong track record across the built environment, with a specialist focus on energy and renewables.As the founder of multiple recruitment businesses, Peter has built and scaled high-performing teams and established a strong market presence through consistent delivery. He takes a practical, outcome-driven approach, focused on building teams that deliver and stand the test of time.Outside of work, Peter is focused on building businesses and backing people - both within the team and across the wider network

Rob Slaughter
Associate Director

Rob is an Associate Director at Onyx Recruitment, leading the engineering consultancy desk across New Zealand and Australia. His focus is civil, structural, geotechnical, and environmental engineering, working with consultancies on roles where technical understanding matters as much as cultural fit. He takes a research-led approach to the market - he knows who is doing what, and what actually moves a good engineer to consider a change. Relationships come first: he'd rather have the honest conversation early than push a process that isn't right for either side.

Greg Small
Specialist Recruiter

Greg is an experienced recruitment specialist with a strong focus on engineering and fire protection. He has built long-standing relationships across the sector, working with engineers, consultants and specialist contractors on roles where technical understanding and delivery experience are important. Greg works across civil, structural, building services and fire protection roles, supporting clients on projects where capability, reliability and fit matter. He has a calm, straight-talking approach and takes the time to understand the brief properly, so he can match clients with people who can do the role and deliver in the environment.

Hamish Brandon
Recruitment Consultant

Hamish brings 15 years of hospitality experience to his work in recruitment, specialising in civil and structural engineering. That background gave him a strong foundation in relationship building, people management, and a results-focused work ethic that he now applies to connecting clients with the right people. Relatively new to recruitment, Hamish prides himself on building and maintaining genuine relationships, and on remembering the finer details that make the difference between a good placement and the right one. He takes the time to understand what clients actually need, so he can match them with people who fit both the role and the team.

Where we operate

Across five core markets that shape the built environment.

Architecture and design

Architects, designers, and technical leads shaping the spaces people live, work and move through.

Design

Engineering

Structural, mechanical, and systems engineers solving complex problems.

Why Onyx

We don't just place people. We match talent to projects that are shaping what comes next. Every brief we take on starts with understanding the work, the team and the kind of person who will thrive in that environment. It's a slower, more deliberate approach, but it's why our placements stick and our clients keep coming back.

Environmental and sustainability

Consultants and specialists embedding sustainability into every project.

Sustainability

Energy & Renewables

Solar, wind and energy specialists powering the transition to a more sustainable built environment

Deep sector knowledge

We live in these markets every day. We understand the technical demands, project timelines and commercial realities that shape how teams are built. That means we can speak your language from the first conversation and deliver candidates who genuinely fit the work.

Consultative hiring

No templates. No shortcuts. We take the time to understand your business, your team dynamics and exactly what success looks like in the role before we present a single candidate. It's recruitment built around listening, not volume.

Better outcomes

Placements that stick. Teams that perform. Careers that advance meaningfully. We measure our success by what happens after the hire, not just the offer letter, and that long term focus is what keeps our clients and candidates coming back.