Principal Software Engineer

Principal Software Engineer II (Fully Remote)

Location : 100% Remote (UK & Ireland-based candidates preferred)

Recruitment Partner : VANRATH

Job Type : Full-time | Permanent

Industry : Fintech / SaaS / Payments

VANRATH is proud to be partnering with an innovative and rapidly scaling fintech company to recruit a Principal Software Engineer II . This is a rare opportunity to play a pivotal role in building a modern, merchant-focused ecosystem while remaining hands-on in engineering. You'll help shape the future of the company's technical direction while contributing directly to the software that powers a nationwide payment infrastructure.

This role is fully remote , offering you flexibility while working alongside a passionate, pragmatic, and forward-thinking engineering team.

The Opportunity :

As a Principal Software Engineer II , you'll lead the design, development, and strategic direction of key platform capabilities-such as APIs, Billing, Settlement, and more. This is a hands-on technical leadership role with significant influence across architecture, engineering culture, and delivery practices. You'll guide feature teams, set standards, and participate in delivering real-world solutions that serve thousands of merchants across the country.

This role is perfect for someone who thrives in a fast-moving environment, values technical excellence, and enjoys mentoring teams to build solutions that scale.

What You'll Be Doing :

Provide technical leadership across multiple product teams, setting direction and enforcing best practices

Design and implement scalable, high-performance applications and APIs

Participate in hands-on coding activities aligned with roadmap priorities (up to 50%)

Define and evolve technical standards, architecture principles, and reusable patterns

Own the technical roadmap for your domain, aligning it with business strategy

Contribute to and maintain internal documentation and knowledge-sharing initiatives

Assess and recommend new technologies and influence key build vs. buy decisions

Promote collaboration across engineering, architecture, and leadership teams

Mentor and coach software engineers to raise technical capability and delivery quality

What We're Looking For :

10+ years in software engineering, with strong design and coding experience in .NET, Java, or similar languages

Deep experience with SaaS platforms, public APIs, and distributed systems architecture

Strong background in databases, caching, systems integration, and performance optimisation

Experience in payment processing or financial services is a significant plus

Proven ability to translate complex business requirements into scalable technical solutions

Demonstrated leadership in enterprise architecture and cross-functional tech strategy

Comfortable working in a high-growth, fast-evolving environment

Strong communication skills and ability to interact effectively with both technical and non-technical stakeholders

Passion for continuous improvement, innovation, and mentoring

What's on Offer :

100% remote working with flexible hours

Work with a modern tech stack and make key architectural decisions

Join an agile, empowered team delivering real value to customers

Competitive salary and benefits package

A supportive and innovative company culture

Ready to take the lead in shaping the future of fintech?

Apply today through VANRATH to learn more about this impactful and rewarding opportunity.

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