Senior Software Engineer

HireQ Talent; Portsmouth; Hybrid; GBP 75,000 - 85,000; Full time

Benefits offered by this job

Equity in a scaling business

Home office support

Competitive salary

Job summary

HireQ Talent is seeking Senior Software Engineers (Level 1 & Level 2) in Portsmouth to drive the development of a cutting-edge payment platform utilizing AI technology. This role offers the chance to work in a hybrid model, with a focus on greenfield solutions and modern technologies.

The ideal candidates will have experience in building scalable applications and strong collaboration skills. Competitive salaries of up to £75k for Level 1 and £85k for Level 2 are offered, as well as equity in a scaling business and modern home office support.

Qualifications

• Strong experience building scalable, production-grade applications.
• Comfortable working across the full stack.
• Leadership and mentoring experience.

Responsibilities

• Design, build, and scale the next generation of the platform.
• Engineer greenfield solutions for a global payments platform.
• Mentor junior engineers, particularly at Level 2 level.

Skills

Building scalable applications

Full stack development

AI-driven systems

Problem-solving

Communication

Leadership

Tools

React

C# / ASP.NET

SQL

Distributed systems

Job description

Senior Software Engineers (Level 1 & Level 2)

Portsmouth (Hybrid – ~1 day per week in the office)

Build the Future of Payments with AI at the Core

HireQ Talent is partnering with a rapidly scaling international tech business entering a transformational growth phase. Already operating at global scale, the company is now investing heavily in greenfield development, including the creation of a next‑generation payment platform to support its expanding international operations.

At the heart of this evolution is the adoption of agentic AI, enabling smarter automation, enhanced decision‑making, and more intelligent, adaptive systems across their platform.

They’re now hiring two Senior Software Engineers to play a critical role in this journey:

• Senior Software Engineer (Level 1) – up to £75k
• Senior Software Engineer (Level 2) – up to £85k

This is a unique opportunity to combine cutting‑edge AI, fintech innovation, and large‑scale engineering, all while helping shape brand‑new systems from the ground up.

What You’ll Be Doing

You’ll help design, build, and scale the next generation of the platform:

• Engineer greenfield solutions, including a brand‑new global payments platform
• Work on systems leveraging agentic AI for automation and optimisation
• Design and deliver scalable, high‑performance applications end‑to‑end
• Contribute across the full stack using modern frameworks and cloud technologies
• Tackle complex challenges across distributed, high‑volume systems
• Drive improvements in performance, scalability, and resilience
• Collaborate with product, data, and engineering teams to deliver impactful features
• Support and mentor other engineers (particularly at Level 2)
• Influence technical direction and architecture decisions

You’ll be working within a modern, cloud‑first ecosystem:

• React
• C# / ASP.NET
• SQL
• Distributed systems & scalable architecture
• Exposure to AI‑driven / agent‑based systems

What They’re Looking For

• Strong experience building scalable, production‑grade applications
• Comfortable working across the full stack
• Experience or interest in AI‑driven systems or intelligent automation
• Ability to take ownership and deliver autonomously
• A problem‑solving mindset with a focus on quality and performance
• Strong collaboration and communication skills
• Leadership and mentoring experience (especially for Level 2)

This is more than just another engineering role, it’s a chance to work at the intersection of AI, fintech, and global‑scale platforms.

• Be part of building a brand‑new international payments platform
• Work with agentic AI and modern, evolving technologies
• Major investment in greenfield projects and innovation
• Join at a key moment in the company’s growth journey
• A culture that values ownership, ideas, and technical excellence
• Build systems that operate at global scale
• Competitive salary (Level 1 up to £75k | Level 2 up to £85k)
• Equity in a scaling business
• Modern kit + home office support

Ready to Build What’s Next?

If you’re excited by AI‑powered systems, greenfield development, and building impactful financial technology at scale, this is your opportunity.