Impact of a Software Engineer

As a Software Engineer at Upsun, you will build and maintain the backend services behind our customers' billing. Billing is your main focus: invoices, taxes, usage reporting, and the integrations that connect our platform to the commercial systems behind it. These systems handle tens of millions in revenue each year across multiple products, entities, and currencies. Accuracy matters, and your work reaches customers directly.

You will own components in this space and act as a key link between engineering, Finance, and Product. Every new offering Upsun launches needs a billing component, and you will help build it. Over time, you will become a long-term owner of the systems you build. You may also contribute to adjacent services such as project provisioning and account management.
What to expect

• Build billing integrations: Develop and maintain backend services and API integrations in Go that connect our platform to external billing systems.
• Ship usage-based billing features: Build features such as usage tracking, estimates, usage alerts, and invoicing. Work with other engineering teams to understand how new features are measured and charged.
• Complete billing migrations: Help finish moving billing to external systems while keeping data accurate and customers unaffected.
• Troubleshoot and fix issues: Investigate and resolve billing issues raised by Support and Finance, from incorrect usage data to failed integrations.
• Protect customers and data: Contribute to anti-abuse measures and keep security in mind when working with sensitive customer and payment data.
• Work across teams: Partner with Finance, Product, and Support, and communicate clearly and asynchronously with a team spread across Europe, North America, and India.
• Build with good practice: Write tested, well-documented code, take part in pair programming and code review, and use AI-assisted tools thoughtfully in your workflow.

What you bring

• Go development experience: 3+ years of professional backend development in Go.
• Relational databases: Hands-on experience working with relational databases such as PostgreSQL or MySQL/MariaDB.
• Third-party API integration: Experience integrating with external REST APIs, including handling errors, retries, and rate limits.
• Care for accuracy: Attention to detail in systems where a mistake can reach a customer's invoice, and an interest in concepts like idempotency and consistency in distributed systems.
• Testing and reliability: A habit of writing unit and integration tests, including for failure paths, and thinking about how your code behaves in production.
• Security awareness: An understanding of common security vulnerabilities and how to avoid them in backend services.
• Interest in billing: You enjoy working on billing and financial systems and want to make them your focus.
• Clear async communication: You write clearly and collaborate well across teams and time zones.

Where we hire

At Upsun, remote work isn't just a trend - it's our foundation. The freedom of remote work with the support of a diverse, global team has been our successful model for over a decade. Our culture celebrates flexibility and collaboration, and while we have team members in over 30 countries around the globe, we are currently focused on hiring for this role in Canada, France, Germany, Spain, and the United Kingdom. Although we're unable to provide visa sponsorship at this time, we welcome applications from all qualified candidates who are legally authorized to work in these countries.
How we hire

We know that a great hire won't meet every requirement that we've outlined. If you can see yourself elevating the team, we want to hear your story. Few of us would be here had we not taken a chance.

You can expect 3 interviews on Google Meet to follow the order below. Should you successfully move through the entire process you will have the opportunity to meet with a variety of Upsunners. Our goal is to ensure you can make the most informed decision on whether this role, and our culture aligns with what you're looking for in your future working environment.

1. 45 Minutes with Talent Acquisition
2. 60 Minutes with Hiring Manager
3. 60 Minutes with Team (Pair Programming Session)

All roles require background checks.
What we offer

A product you can believe in - Join us in transforming how businesses build and manage web applications, driven making a positive impact as a proud B Corp.

An Award-Winning Workplace - We've been recognized by Forbes' Top 30 Companies for Remote Jobs and France's Best Workplaces for Women.

A culture that values your voice - Join a flexible, open, and inclusive work environment where your voice is encouraged, and your ideas shape our growth and evolution.

A global team - Collaborate with colleagues from diverse backgrounds across the world, embracing different perspectives

Benefits and perks - Make the most of what matters to you

Flexible PTO

Comprehensive healthcare coverage (UK, Canada, France, Spain, USA)

Company stock options

Professional development budget

Office equipment budget

Wellness budget

Annual team gatherings

Internet reimbursement

Inclusive parental leave

Remote work travel program
You belong here

At Upsun, we celebrate diversity in all its forms and are committed to fostering an inclusive, equitable, and supportive workplace where everyone can thrive. We embrace and value different perspectives, backgrounds, and experiences, because they make us stronger as a team. Whoever you are, wherever you're from, and whatever path you've taken, you are welcome here. We encourage you to bring your whole self to work, connect with others, and share your passion. If you need accommodations at any stage of our hiring process, please let us know. We're here to ensure an accessible and comfortable experience for you.