Software Engineer

About the role

Aimsun is looking for a Software Engineer to join its Technology team in Barcelona. You will help design, develop, and maintain high‑performance C++ components across Aimsun’s transportation‑focused product portfolio, working closely with engineers and cross‑functional stakeholders.

Key responsibilities

• Analyse user and business requirements and translate them into robust technical solutions.
• Design, develop, test, and maintain efficient, reliable C++ code.
• Conduct performance testing and optimise system behaviour.
• Identify, troubleshoot, and resolve software defects.
• Produce clear technical documentation for future enhancements.
• Collaborate with fellow engineers and cross‑functional teams to ensure code quality and reliability.

Required profile

• Bachelor’s degree in Computer Science, Engineering, Mathematics, Physics or a related scientific field.
• Strong analytical and problem‑solving abilities.
• Excellent written and verbal communication skills in English.
• Self‑motivated with good time‑management and attention to detail.

Required skills

• C++ programming

What we offer

• Flexible working hours and partial remote work (hybrid model).
• Dedicated HR support and training opportunities.
• Individual annual review and career development support.
• Modern offices in central Barcelona.
• Collaborative, horizontal organisation with open feedback.
• Mission‑driven environment focused on smarter, safer cities.