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Working at Onside
Onside is a multi award-winning accounting firm supporting high-growth, technology-led businesses across the UK.
We combine premium client service with modern systems, automation and commercial thinking to create a better experience for both our clients and our people.
We are building a firm designed for the future of the profession, one that values ownership and impact over outdated ways of working.
We combine premium client service with modern systems, automation and commercial thinking to create a better experience for both our clients and our people.
We are building a firm designed for the future of the profession, one that values ownership and impact over outdated ways of working.
Professional Training and Development
Onside are proud to be an ACCA Approved Employer, reflecting our commitment to high professional standards and long-term career development. Our people benefit from structured mentorship, ongoing learning and development, and clear support to qualify, stay qualified and progress their careers in line with their ambitions. This is reinforced by the fact that our Founder, Martin Brennan, sits on ACCA’s Global Council, helping shape the future of the profession at an international level.
Remote-First Working
Onside operates as a remote-first firm, with long-term, formal homeworking at the core of how we work. Our environment suits people who are comfortable and experienced working independently, communicating clearly and taking ownership in a distributed team. Remote working here is intentional, structured, and here to stay.
Truly Technology-Led
We are not just users of technology – we are helping shape what modern accounting looks like, and we want people who are genuinely passionate about technology in our team. Through our partnership with San Francisco–based technology partners, we are building the next generation of AI-enabled professional services. This allows our expert teams to focus on high-value judgement, insight and client impact, rather than low-level administrative work, which we believe will define the future of the profession.
Pace, Ownership and Autonomy
We are a fast-paced, high-ownership business. Roles at Onside are designed for people who enjoy responsibility, can manage priorities with minimal supervision, and thrive in an environment where autonomy and accountability go hand in hand. You’ll be trusted to deliver, make decisions, and contribute to improving how we work as we continue to scale.
Current Vacancies
Currently Recruiting
Onside Accounting
Finance Manager - click herePayroll Manager - click here
Onside Tax
R&D Tax Associate - click hereWorking at Onside
Are you resident in and have a legal right to work in the UK?
Do you enjoy working from home?
Do you like working in a company where your ideas are considered?
Do you like the idea of working with exciting startups in the UK's booming tech sector?
Do you enjoy collaborating with accounting and tax colleagues to offer a seamless service to our clients?
Want to Apply?
If you would like to apply for one of our vacancies, please send your CV and a short video (max 3 minutes) to careers@onsideaccounting.com
Introduce Yourself by Video
A standard smartphone or webcam recording is perfect, and there is no need for formal attire, scripts or high-quality production.
We’re looking for authenticity, clarity and motivation rather than your content creation skills!
The purpose of this is to hear directly from you, in your own words.
Use the bullets outlined as guidance when making your video.
Please note, we do require you to be a resident in and have a legal right to work in the UK.
We’re looking for authenticity, clarity and motivation rather than your content creation skills!
The purpose of this is to hear directly from you, in your own words.
Use the bullets outlined as guidance when making your video.
Please note, we do require you to be a resident in and have a legal right to work in the UK.
Remember to include:
State your name and what role you’re applying for
What initially drew you to this role
Why you are interested in joining Onside Accounting
Why this opportunity is the right next step in your career
What you hope to achieve or gain from this move
Unlock Your Potential
Join Onside to unlock your potential and build a rewarding career with a firm that prioritises your success every step of the way.
Head over to our LinkedIn page to learn more about us.
Head over to our LinkedIn page to learn more about us.
Here's what some of the team say about working at Onside
Our Services
Onside offer a vast range of accountancy, tax and other advisory services -
Accounting & Tax
Keeping on top of your filing responsibilities with HMRC and Companies House.
Learn More
R&D Tax Credits
Manage your R&D tax credits application with the help of our expert advisors.
Learn More