Junior Software Engineer UK

Critical Software; Southampton; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading technology firm in Southampton is seeking a Junior Software Engineer to engage in innovative projects using C, C++, and Python. The role emphasizes collaboration, problem-solving, and opportunities for growth in a supportive environment. Join a team that values impactful tech and flexible work policies. Unfortunately, visa sponsorship is not available for this position.

Benefits

Flexible work policies

Well-being benefits

Modern office environment

Qualifications

• Hands-on coding experience, even from university projects.
• A love for problem-solving and eagerness to learn.
• A team-first mindset thriving in collaborative environments.

Responsibilities

• Engage in challenging projects that enhance skills.
• Contribute to impactful solutions in critical industries.

Skills

C

C++

Python

Problem-solving

Team collaboration

Education

Background in Engineering or STEAM fields

Job description

Join Our Mission: Junior Software Engineer Wanted!

At Critical Software, our people are our superpower. We’re a community of curious minds and tech wizards, pushing the boundaries of what’s possible. More than just a workplace, we’re a tight-knit team with a shared mission—using technology to make the world safer, smarter, and better.

We work with industry giants in Aerospace, Rail, Medical, Energy, Finance, and more, tackling real-world challenges with cutting-edge solutions. Now, we’re on the lookout for our next Junior Software Engineer—could it be you?

What You Bring to the Team:

• A background in Engineering, STEAM fields, or equivalent experience
• Some hands-on coding experience (even if it’s from university projects)—C, C++, and Python are the ones we're looking for.
• A love for problem-solving and a hunger to learn
• A team-first mindset—you thrive in a collaborative environment
• A passion for tech that makes a difference—you want to build solutions that impact lives

What You Can Expect from Us:

• Endless growth—challenging projects that stretch your skills
• Real impact—help shape critical industries and improve millions of lives
• A supportive, people-first culture—because work should be awesome
• Perks that matter—flexible work policies, well-being benefits & modern offices that feel like home
• A chance to make a difference—join social initiatives and be part of something bigger

If you're ready to kick-start your career in a dynamic, purpose-driven environment, we’d love to hear from you!

Unfortunately, we cannot offer visa sponsorship for this role.

Critical Software is proud to be a Benefit Corporation. A Benefit Corporation differs from a standard corporation (C-Corporation): It is a for-profit business entity, legally defined in the US and other jurisdictions, whose legally defined goals include the positive impact on society, workers, the community, and the environment, in addition to profit.

We are an equal opportunity workplace and committed to allowing candidates with disabilities or neurodevelopmental conditions to demonstrate their competencies to their full potential. Please let us know if you need any adjustments during the recruitment process.