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Senior Software Engineer

Job in Cardiff, Cardiff City Area, CF10, Wales, UK
Listing for: SNC-Lavalin
Full Time position
Listed on 2025-12-23
Job specializations:
  • Engineering
    Systems Engineer, Software Engineer
Job Description & How to Apply Below

Overview

Atkins

Réalis’ UK Transportation business brings together the expertise of our Highways, Rail, and Local Transport teams into a single, collaborative network of over 3,000 talented engineers, planners, and consultants.

With our unique breadth of services and global scale, we are recognised as one of the leading transportation infrastructure consultancies in the UK and internationally. We are passionate about shaping the future of mobility - combining engineering excellence with digital innovation to deliver sustainable, cutting-edge solutions for our clients. Our culture fosters creativity, collaboration, and continuous learning, empowering our people to make a real impact on the world around us.

You will be part of our Technology Solutions team within the Engineering Digital Practice, embedded in projects and collaborating with digital teams across the UK and internationally.

Role

As a Senior Software Engineer, you will take technical ownership of projects and lead teams to deliver advanced digital solutions for engineering and transportation projects. You’ll define architecture, drive integration of software and data platforms, embed “safe by design” principles, and coach engineers to raise delivery quality.

Your responsibilities will include:

  • Leading technical delivery and coordinating interfaces across multiple disciplines.
  • Defining secure, scalable architectures and setting assurance approaches for projects.
  • Driving integration strategies that improve automation, reporting, and decision‑making.
  • Championing Agile and Dev Ops practices; fostering continuous improvement and delivery quality.
  • Coaching and mentoring engineers; contributing technical narratives and pricing input to bids.
  • Presenting complex technical solutions to clients and stakeholders with clarity and confidence.

This role offers the opportunity to influence technical strategy and collaborate across the UK and internationally to deliver integrated, future‑ready solutions.

About you

We are seeking a professional Senior Software Engineer who combines advanced technical expertise with leadership capability. The ideal candidate will:

  • Take ownership of technical outcomes and lead teams within their discipline.
  • Communicate complex concepts clearly to clients and stakeholders, building trusted relationships.
  • Instil good engineering practices, including security, quality, and “safe by design” principles.
  • Show resilience, adaptability, and a proactive approach to problem-solving and continuous improvement.
  • Mentor engineers and contribute to technical strategy and innovation.

Essential skills

These are the skills and experiences that will help you excel in this role. Some candidates may have all of them, others may have many but not all - and that’s okay! If you’re passionate about the role and bring relevant strengths, we’d love to hear from you.

  • Significant professional experience, ideally within the engineering sector, with a track record of leading technical delivery on complex projects.
  • Strong programming capability (e.g., C#, Python, JavaScript/HTML/CSS) and proficiency in modern web application development (e.g., Angular, React, or Blazor).
  • Advanced competence in SQL/database architecture and integration with cloud platforms (Azure preferred).
  • Practical knowledge of Agile, Dev Ops, and CI/CD with emphasis on engineering quality and traceability.
  • Ability to automate workflows and integrate applications through APIs (e.g., Python, Power Shell).
  • Proficient at designing secure, scalable architectures, technical assurance, and system integration.
  • Experience leveraging Microsoft Power Platform (e.g., Power BI, Power App, Power Automate) to accelerate reporting and automation.
  • Experience reviewing and assuring technical deliverables against standards and compliance.
  • Excellent communication and presentation skills for client and team leadership including mentoring engineers.

Desirable skills

Chartered or Incorporated status with a recognised institution (e.g., IET, ICE, BCS) or demonstrable equivalent professional standing would be advantageous. We also value certifications in cloud technologies (e.g. Azure), Agile, or Scrum. Experience managing technical…

Position Requirements
10+ Years work experience
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