Technology & Engineering

Personalised accountancy support for
scientists, IT professionals,
and engineers.



Technology & Engineering Contractors

IT remains one of the most popular sectors for independent contractors and self-employed individuals. Running your own Limited Company in this field can be extremely lucrative, but it’s likely with your focus elsewhere, staying on top of your accounts can be complicated. We’re here to help you manage your responsibilities while you focus on supporting others with digital transformation and scientific change.

How We Can Help

The world of technology never sleeps, that’s why we’re here for you whenever you need us:


  • If flexible working means you need to speak with us outside “business hours”, we’re open from 8am-8pm Monday-Friday and 9am-12pm Saturdays.
  • With technology at the forefront of our offering, you can use our bespoke online portal to manage timesheets, documents, and finances all in one place.
  • Our flexible payroll options allow you to work on multiple contracts if you need to, toggle between roles with different IR35 statuses, maximise your take home pay, and maintain one home for all your payroll needs.

Limited Company Accountancy

Everything you need for one fixed fee.

Setting up a Limited Company comes with a lot of administrative responsibilities. Our experts have the experience to take the stress out of self-employment, helping you manage your accounts and ensure you’re always compliant with tax and legal regulations. We understand how important it is to have peace of mind over your own accounts so you can concentrate on what you do best.

Compliance guaranteed – no one knows IR35 quite like us.

Exceptional customer service & extended opening hours.

Simple online accountancy software available 24/7.

Unrivalled experience – supporting 25,000 contractors for 30+ years.

Honesty & integrity – FCSA accredited for total peace of mind.

Plenty of useful guides & resources written by our experts.

Switching Accountants?

We’ve made the process of switching accountants simple and hassle-free, ensuring we do all the hard work for you while you relax, knowing your accounting affairs are managed seamlessly during the transition.

What Our Customers Say

Excellent customer service

A big thanks to Darris Thomas for taking me through the process of creating a limited company and making it painless and jargon free. He was personable, knowledgeable and didn’t mind me asking noddy questions! Excellent customer service. Cheers Darris.

Tim Thompson

Extremely Helpful

Hannah has been my personal accountant for a year and it’s been a real pleasure to work with her. Highly competent, supportive and extremely helpful. Keep up the great work!

Bartosz Ludwig

JSA Umbrella

Hassle-free, compliant Umbrella

If you’re working on an ‘inside’ IR35 role, Umbrella employment is simple and easy with JSA. We take care of all your necessary tax deductions, such as PAYE and National Insurance, and you’ll receive your accurate payment quickly & efficiently. You can operate one contract at a time or switch seamlessly between multiple contracts while enjoying a wide range of employment benefits. 

Plus, if you plan to return to ‘outside’ IR35 working, you can make the most of our flexible IR35 Switch option – giving you the best of both worlds!

Testimonials from our Agency Partners

Seamless Service

We have been partnered with JSA for 2 years and have never been disappointed with the quality of their service. Del and his team are always on hand to help us.

They have been especially great with IR35 coming up. As you can imagine, this could have caused unprecedented strain on our business without the help of JSA’s experts and the IR35 Complete™ platform. IR35 Complete™ has been seamless and easy to use from set up through to day-to-day use. A highly efficient platform that processes our IR35 assessments and helps us keep on top of our compliance responsibilities.


James Fernandes

Managing Director at Carrington West

Proactive and Efficient

We couldn’t have asked for better support through our IR35 preparations. JSA did not hesitate to give us their time and expert input, both proactively and reactively. Not only were the JSA team highly knowledgeable, but they were also great at communicating the complexity of IR35 and helping us understand how the legislation relates to our business and our specific circumstances. 

It makes a big difference on a project like this, to work with people you respect, but who are also very likeable and generous with their time and knowledge.

Crystal Metcalfe

Vice President at RGP

Trust Our Experts

Our experienced team understand the specific needs of each client to provide tailored support and guidance on all aspects of contracting, no matter your sector.

Updates and news

We'd love to hear from you

Call us on 01923 257 257 or Request a callback