Senior Software Engineer, Billing & Revenue

Gigs; Greater London; Hybrid; GBP 90,000 - 125,000; Full time

Benefits offered by this job

Stock options

Home office stipend

Learning and development budget

Phone and international data plan

Job summary

Gigs is building the revenue backbone for a connected world. As a Senior Software Engineer on Revenue, you will own the partner billing system end-to-end, turn usage and terms into auditable invoices, and integrate with ERP and Data Platform for reliable revenue data across the company.

You will work primarily in Go, with PostgreSQL and event-driven tooling, collaborating with Finance and Business Development to model and implement commercial deals in production.

Qualifications

• Strong backend engineering experience with Go and production services.
• Experience using AI as a core part of workflows and code reviews.
• Careful design for correctness in billing/revenue systems with tests and observability.

Responsibilities

• Own the partner billing system end-to-end and generate auditable invoices.
• Build integrations with ERP and Data Platform for clean revenue data flow.
• Work with Finance and Go To Market to translate commercial models into working software.
• Design for correctness and observability with tests and monitoring.

Skills

Go

Backend engineering

AI integration

Systems design

Cross-team collaboration

Billing/revenue understanding

Observability

Tools

PostgreSQL

ERP integration

Data Platform

PubSub

GCP

Job description

About Gigs

At Gigs, we're building the operating system for mobile services—a platform that lets tech companies embed global connectivity into their products effortlessly.

Just as Stripe lets any business add a payment button in seconds, Gigs empowers platforms to weave in connectivity—bridging the traditional world of telecom with modern tech. From fintechs launching mobile services to HR platforms offering work phone plans, we automate provisioning and remove telecom complexity.

Our team of around 150 people across the US and Europe, backed by nearly $100 million in funding from Ribbit Capital, Google, and Y Combinator. As one of the fastest-growing tech companies, bringing together early-stage engineers, product builders, and business athletes from companies like Stripe, Airbnb, and Shopify. We’re tackling deep technical and regulatory challenges to make connectivity truly seamless.

If you’re driven by curiosity, creativity, and the chance to shape the future of telecom, we’d love to hear from you.

Things We Care About

• Speed. We move and we ship. We set bold deadlines and treat every week like it matters.
• Ownership. If you see something broken, fix it. We don't wait for permission.
• Customer Obsession. Our customers' product is our product.
• Ambiguity. We're building frontier technology in a complex domain. You'll need sound judgement and good instincts to make decisions without complete information.
• First principles. We don't ask how things have been done before. We ask why they were done that way at all.

The Role

As a Senior Software Engineer on Revenue, you'll own the systems that turn Gigs' business into money in the bank. Gigs is a B2B2C business: consumers get connectivity through our partners' products, and we bill those partners for it. You'll focus on the B2B side — the partner billing system that sits at the center of how Gigs earns revenue.

Billing has to be right. You'll build systems that turn usage and commercial agreements into accurate, auditable invoices, and you'll build the checks and observability that keep them trustworthy as we scale. You'll also work well beyond billing itself, building integrations with other backend systems like our ERP and Data Platform so revenue data flows cleanly across the company.

This is a cross-functional role. Your closest partners outside engineering are Finance and Go To Market teams, and a big part of the job is translating commercial models and partner deals into working software.

You'll join reporting into our Head of Data. The goal is to spin up a dedicated Revenue team — so this is also a chance to help shape a new team and problem area from the ground up.

• Own our partner billing system end-to-end: the platform that turns usage and commercial terms into accurate, auditable invoices for our partners.
• Build and maintain integrations with other backend systems, including our ERP and Data Platform, so revenue data is consistent and reliable across Gigs.
• Work primarily in Go, our main language for backend services, alongside PostgreSQL and event-driven tooling.
• The foundations have been laid this is about taking the system to the next level
• Partner closely with Finance and Business Development — sit down with them, understand a commercial model or a new partner deal, and turn it into something that works in production.
• Design for correctness and observability. You'll build the tests, monitoring, and reconciliation that make revenue numbers something people can rely on.
• Take complex problems from scoping through to production, and operate what you build.
• Help shape the foundations, practices, and roadmap of a new Revenue team as it forms.

You can find more about how we work on our engineering page.

Salary range for Senior Engineer

• EU: €90,000 - 125,000
• UK: £90,000 - 125,000

(The final offer depends on your background, skills, and how you perform through the process. We're open to considering mid, senior and staff-level candidates, which may result in an adjustment to the scope and compensation)

What We Are Looking For

• You have strong backend engineering experience and are fluent in Go. You've built and run production services, and you care about the quality of the software you produce. Go experience is required for this role.
• You use AI as a core part of how you work, not an occasional shortcut. That means prompting agents with context and intent, reviewing what they produce critically, and knowing when to push back. You can explain the code an agent wrote, catch when it oversteps the ask, and form your own opinion on whether the output is actually good. You're curious about how the tooling is evolving and actively working to get better at it.
• You think in systems and care about correctness. You understand that billing and revenue systems have little room for error, and you design for it — with clear data models, good tests, and observability built in.
• You enjoy working across teams. You can talk to Finance or Business Development, understand what they need, and turn a commercial model into something that runs reliably.
• You love learning technologies as you go. You always want to find the right tool for the job, and don't only follow what you already know.
• You care about more than just engineering. You need to see the business impact of everything you do. You know how to make speed/quality trade-offs.

Bonus Points If:

• You've worked on billing, payments, invoicing, metering, or revenue systems before.
• You have experience integrating with ERP systems or building data pipelines against a data platform / warehouse.
• You have experience with our stack: Go, PostgreSQL, GCP, Solvimon, PubSub.
• You've worked in fintech, payments, telecom, or other regulated industries where reliability and correctness matter.

Work At Gigs

At Gigs, we value in-person collaboration. We believe the best ideas, decisions, and relationships are built when teams spend meaningful time together, and our culture is designed around that belief. We support flexibility where it makes sense. Some focused work can be done remotely, and not every role or week looks the same. You should expect regular time in one of our hubs, as well as occasional travel for team workshops, customer meetings, and Gigs Republic, our bi-annual company off-site. Our offices are designed to feel like home-inspired workspaces, with plants, thoughtful tools, and small, tight-knit teams that make collaboration feel natural, energizing, and effective.

What We Offer

At Gigs, we believe in rewarding excellence. We offer competitive compensation and stock options because we see you as a true partner in our growth. We also provide stipends for your home office or work setup, a budget for learning and development to fuel your career, and of course, a free phone and international data plan

Want to learn more about our benefits, hubs, and what it’s like to work at Gigs? Check out our Careers page.