Principal Software Engineer

Harrington Starr; Remote; GBP 80,000 - 100,000; Full time

Job summary

A leading Global Payments Technology company is seeking a Principal Software Engineer to join their senior engineering leadership team. This position offers a chance to define the technical direction, mentor multiple teams, and influence architecture decisions while working fully remote. The ideal candidate brings over 10 years of experience, particularly in .NET and building scalable systems. You will also enjoy competitive salary and numerous benefits, with opportunities for career progression in a fast-growing tech environment.

Benefits

Fully remote working

Flexible arrangements

Career progression opportunities

Qualifications

• 10+ years’ experience in enterprise architecture and software engineering.
• Proven expertise in .NET with strong SaaS and API platform experience.
• Hands-on track record designing highly scalable, high-performance systems.
• Strong leadership, mentoring, and stakeholder management skills.

Responsibilities

• Define and maintain the company’s technical and architectural direction.
• Provide leadership and mentorship across multiple engineering teams.
• Drive enterprise-level design decisions, ensuring scalability and resilience.
• Contribute directly to coding activities in support of key deliverables.
• Monitor emerging technologies, influencing long-term strategic decisions.

Skills

Enterprise architecture experience

.NET expertise

SaaS experience

API platform experience

Leadership skills

Job description

Principal Software Engineer

Fully Remote | Permanent | Competitive Salary + Benefits

Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands‑on development with strategic influence, guiding architecture decisions and shaping the technical vision for a global, real‑time payments platform.

Key responsibilities

• Define and maintain the company’s technical and architectural direction.
• Provide leadership and mentorship across multiple engineering teams.
• Drive enterprise‑level design decisions, ensuring scalability and resilience.
• Contribute directly to coding activities in support of key deliverables.
• Monitor emerging technologies, influencing long‑term strategic decisions.

Benefits of the role

• Fully remote working with flexible arrangements.
• Senior leadership role with influence over enterprise‑wide architecture.
• Opportunity to balance hands‑on coding with strategic direction.
• Work on complex, high‑performance systems at global scale.
• Career progression in a fast‑growing international technology business.

Key skills required

• 10+ years’ experience in enterprise architecture and software engineering.
• Proven expertise in .NET with strong SaaS and API platform experience.
• Hands‑on track record designing highly scalable, high‑performance systems.
• Strong leadership, mentoring, and stakeholder management skills.

For any additional questions, please contact me via LinkedIn or through email - [e-mail].

If you feel this role is the right one for you, please apply below!