Junior Software Engineer

Critical Software; Southampton; On-site; GBP 30,000 - 40,000; Full time

Job summary

A technology firm in Southampton seeks a Junior Software Engineer to join their dynamic team. Ideal candidates will have a background in Engineering or STEM, coding experience in C, C++, and Python, and a collaborative mindset. This role offers opportunities for growth and projects that make a real-world impact. The company promotes a supportive culture and offers flexibility and well-being benefits.

Benefits

Flexible work policies

Well-being benefits

Modern office environment

Qualifications

• A background in Engineering, STEM fields, or equivalent experience.
• Some hands-on coding experience in C, C++ and Python.
• A passion for tech that makes a difference.

Responsibilities

• Work on challenging projects that stretch your skills.
• Build solutions that impact lives.
• Participate in social initiatives.

Skills

C

C++

Python

Problem-solving

Team collaboration

Education

Background in Engineering or STEM fields

Job description

Overview

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, STEM fields, or equivalent experience
• Some hands-on coding experience (even if it’s from uni 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!

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 prove their competencies to their full potential. We are willing to move the barriers that may prevent you from demonstrating that you are the right candidate for this role, so please let us know if you need some adjustment in your recruitment process.