Principal Software Engineer

Harrington Starr; United States; Remote; GBP 80,000 - 110,000; Full time

Benefits offered by this job

Fully remote working

Flexible arrangements

Career progression opportunities

Job summary

A leading Global Payments Technology company is seeking a Principal Software Engineer to join their senior engineering leadership team. This role offers the opportunity to blend hands-on coding with strategic direction, guiding architecture decisions for a global payments platform. The ideal candidate should have over 10 years of experience in enterprise architecture and software engineering, with strong skills in .NET, SaaS, and high-performance systems design. The position is fully remote, offering flexible working arrangements.

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.

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

Leadership

Mentorship

.NET

SaaS

API platform experience

Enterprise architecture

Job description

Fully Remote | Permanent | £80,000 - £110,000

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.
• 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!