Working at Critical Software |

Critical Software Overview

Coimbra, Coimbra (Portugal)
501 to 1000 employees
Company - Private
Computer Hardware & Software
£25 to £50 million (GBP) per year
Established in 1998, Critical Software provides systems and software services for safety, mission and business-critical applications, helping to ensure clients meet the most demanding quality standards for safety, performance and reliability. The company’s data ... Read more

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Critical Software – Why Work For Us?

At Critical Software, we believe our people are our greatest asset. It is their know-how, inspiration, energy and passion that drive us forward. Hiring the best and brightest people, who share our vision and ambition, will support our success as a company.

People are the most important factor in achieving our goal of becoming a leading global software services and products company. We invest time and energy in every member of our team throughout every step of their journey with us. We believe that talented people deserve to work for an excellent company, and we pursue excellence in every area.

undefinedThe conditions we offer our employees show how we look for the very best talent and promote a meritocracy founded on equal opportunities. We take an innovative approach to performance management that promotes transparency, credibility and openness. Our incentives extend beyond typical fringe benefits, rewarding employees according to individual, group and overall company results. We support a wide range of leisure, sports and social activities, emphasising our team spirit and togetherness, as well as a range of other benefits to support wellbeing. In 2014, we're proud to have won 'Employer of the Year' at the Test Valley Business Awards and the award for 'A Great Place to Work' at the Western Gazette Business Awards.

Find out more about working at Critical Software here.

Ready to apply? Find out what we're looking for here.

At Critical Software, we are always looking for talented people with exceptional ability and a solid track record. We place huge importance on recruiting people who fit into our unique culture. Here are some of the traits we value.

The Critical Software Difference – we look for people with the following attributes:

  • Dynamic, proactive and motivated
  • Caring and supportive team players
  • Excellent communication skills
  • Socially and environmentally responsible
  • Enjoy challenging work
  • A ‘can do’ attitude
  • Open, transparent and honest
  • The right balance between technical skills and experience
  • A BSc or higher in a numerate degree (e.g. Computer Science, Electronics, Physics, Maths)
  • A solid software and/or systems engineering background
  • Unless applying as a graduate, experience is desirable in one or more of the following:
    1. Safety-critical systems: involving activities such as embedded development, V&V, safety hazard analysis and certification work, as well as familiarity with safety standards such as DO-178B/C, OO-56 and EN-50128
    2. Data intensive systems: involving activities such as data analytics, big data, data visualisation and database design
    3. Java development: including backend and frontend development
    4. Microsoft .Net development, Sahrepoint and ASP.Net
    5. Software Product Assurance: including software testing, process assurance, application security and security assessments 
  • Experience in a variety of programming languages, such as Ada, C, C++, C#, .Net and Python
  • Model Driven Development experience using UML, SysML and/or MoDAF
  • Exposure to different development methodologies such as Scrum, V-Model, Agile and TDD


Critical Software offers a friendly, caring and supportive working environment, with all the resources, training, encouragement and freedom you need to allow you to excel.

undefinedWorking at Critical Software will challenge you and support you to grow and develop both personally and professionally. You'll be working with a diverse group of bright people who are experts in what they do; you'll learn from them and they'll learn from you. What’s more, you’ll have the opportunity to work in industries as diverse as aerospace, space, defence, transport, telecoms, government, energy, financial services and healthcare.

As a company, we follow the best organisational practices, which means you'll be part of a team that clearly defines roles and responsibilities but encourages open discussion and the free flow of ideas.

What We Offer
In addition to a competitive salary, a variable bonus scheme and the usual benefits you might expect, we also have a number of other rewards that other employers don’t always offer:

  • Payment of membership fees to professional bodies (e.g. IEEE, IET, ACM)
  • Group Life Insurance
  • Annual travel insurance
  • Company pension
  • An innovative performance management approach for career progression that promotes transparency, credibility and openness
  • Random Rewards
  • Company CPD events and other paid for social events
  • Opportunities to travel to company events in Portugal, UK, Brazil, Mozambique
  • Bi-monthly massage sessions
  • Leisure rooms in our offices
  • Free office refreshments and fruit

Depending on grade, up to four of the following 'Pick and Mix' benefits can also be selected:

  • A Health Care plan
  • A Dental Care plan
  • A mobile allowance
  • Contribution to any gym membership
  • Among many other benefits

We engineer ingenuity, and we love a challenge. Challenges create change, allowing us to invent new things, energise our ideas and achieve greatness. Challenges help us to serve our customers, in our relentless pursuit to “make the best better.” Whatever we’ve accomplished, we’re always hungry and ambitious for more, always asking new questions, always innovating.

We believe we are stronger together. We work hard and smart for each other and the world around us. We believe that everyone we work with and everything we do matters. We pride ourselves on our energy and resolve in delivering on our promises. We care deeply about our work and are passionate about attracting and nurturing the very best talent.


We listen, we think and we act: boldly. When things matter most, we take the initiative. As a team and as individuals, we trust in our expertise, which empowers us to be decisive, brave and committed in our work. We’re resolute and resilient: not everything in life is easy, but we wouldn’t have it any other way.

We care about the way we get to the top. Trust is tied to everything we do. We are guided by our dedication, honesty and integrity at all times – to each other, all of our customers and suppliers, and the communities we are an important part of. These principles lie right at the heart of our organisation. We know there are no short cuts to success, and we’re willing to go the distance to make sure we do things the right way.

Critical Software Reviews

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Recommend to a friend
Approve of CEO
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Gonçalo Quadros
56 Ratings
  • Featured Review

    "Proud to say "I work at Critical""

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Anonymous Employee in Lisbon (Portugal)
    Current Employee - Anonymous Employee in Lisbon (Portugal)
    Positive Outlook
    Approves of CEO


    Awesome work environment. Challenging projects with opportunities for professional growth. Special mention to direct management for encouraging autonomy, project ownership and career development.


    Having the company spread across multiple locations can sometimes be a challenge to communication - there should be more corporate events promoting cross-site interactions.

    Advice to Management

    Critical Software’s ecosystem is the perfect balance between humanity and business ambition, where a flexible and informal environment does not undermine quality and professionalism. Massive respect for the achievements to date and for what the company represents. Keep dreaming big :)

See All 91 Reviews

Critical Software Photos

Critical Software photo of: CRITICAL Software 18 Years
Critical Software photo of: We've added some CRITICAL flair to our Porto office by playing with colour and displaying our values and achievements visually.
Critical Software photo of: CEO of CRITICAL Software, Gonçalo Quadros opening our new Porto office
Critical Software photo of: Official opening of our new Porto office
Critical Software photo of: A meeting at our Southampton office
Critical Software photo of: The CRITICAL Software Southampton office
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Critical Software Interviews



Getting an Interview

Getting an Interview





    Accepted Offer
    Positive Experience
    Easy Interview


    I applied online. I interviewed at Critical Software.


    I was invited for an interview on-site. In the beginning, they asked soft-skills questions, then they continued with technical ones, and they finished with some coding examples. During the interview, the two people were very friendly and we actually had an "informal" conversation about my background, my interests, and my reactions to specific situations. They made me feel really comfortable and wasn't the type of interview where there is one question after the other. It was like a conversation based on me.

    Interview Questions

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Critical Software Awards & Accolades

  • National Champion, European Business Awards, 2015
  • Employer of the Year, Test Valley Business Awards, 2014
  • Investors In People Silver Accreditation, Investors in People (Silver), 2018
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Work at Critical Software? Share Your Experiences

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