Staff Product Engineer - Connect

Our Challenges

Our job is solid software engineering, not hype engineering. Carrier APIs differ a lot across countries, providers and regulatory regimes. Provisioning, porting, and eSIM lifecycle management happen in real-time with hard SLA requirements. Every one of those states surfaces to a user somewhere: a customer checking if their eSIM activated, an ops agent watching a port stall, a developer reading our dashboard to debug an integration. When the backend gets it right but the front end hides it, we've built nothing.

Ours is a world where decades-old carrier protocols meet eSIMs, IoT, satellite connectivity, and the road to 6G. We're bridging that gap, making the old world programmable for the new one, and making it legible to the humans who touch it. We're a platform company solving real, durable problems that don't disappear when the hype cycle turns.

Our engineering team is doubling in 2026. We're building out a senior IC track, hiring multiple staff and principal engineers, because the challenges we're solving today only get deeper. New markets, new connectivity paradigms, and interfaces that need to carry real-time state for years, not quarters.

Connect is the customer-facing layer of Gigs. It's where our customers' end users buy, activate and manage mobile connectivity, whether through a fully white-labelled experience or embeddable flows that customers drop into their own apps. Demand for both is growing quickly, and we're at an inflection point. We're deciding how a full white-label product and a set of embeddable flows fit together under one platform and one product vision. That platform is also becoming the foundation other Gigs teams use to launch new verticals and experiments.

You've seen what good and bad look like in a front-end codebase at scale. You know how a design system rots, how state management turns into a maze, how a dashboard that felt fine at 10 customers falls apart at 500. We want someone who can work across product, design, and backend teams, connecting the dots between an API contract and the screen a user actually sees. Someone who spots UX and architecture problems before they ship, and who builds the patterns other engineers adopt and keep.

Salary Range: 

• €130,000 - €165,000 (base salary) + equity

What You'll Do

• Own the architecture and technical vision of Connect, our hosted checkout for mobile plans driving millions in yearly revenue (React, Next.js, TypeScript)
• Lead projects from a fuzzy problem to a shipped product: talk to customers, work with design, plan the work and build great product experiences across the stack
• Raise the bar on front-end operational excellence: performance budgets, error boundaries, observability into what users actually experience, and graceful degradation when a carrier integration is slow or down
• Work the seams between front end and backend. Shape API contracts, push back on backend design when it creates a bad UX, and know enough Ruby or Go to trace a bug end to end yourself
• Find where AI changes the work, in our product and in how we build it, and push those changes forward
• Mentor senior engineers and help define what the senior IC growth path looks like at Gigs
• Ship production code and shape technical strategy with our engineering leadership.

What We're Looking For

You've seen what good and bad look like. You bring experience of operating at scale, in a codebase or an organization, and you know which front-end patterns hold up under real production pressure. You can work across teams, connecting the technical dots between a backend event and the UI that renders it. You spot domain boundary problems before they become a broken screen in production, and you build the practices that stick.

What We Expect on Day 1 (and in the Interviews)

• 7+ years building and operating production React applications at scale, with deep TypeScript, Node and Next.js experience
• Strong opinions on state management, rendering performance, and design systems, backed by scars from systems that didn't scale
• Comfort working across the stack: you can read and modify a Ruby or Go service, understand the API you're consuming, and know when the fix belongs on the client and when it doesn't
• Strong operational instincts for the front end: you think about error tracking, performance monitoring, and failure states as first-class concerns, not afterthoughts
• Experience with agentic AI development. You've worked with LLMs beyond code completion, understand agentic patterns, and know when AI speeds you up and when it doesn't
• Track record of driving technical outcomes across teams without direct authority. You persuade through credibility and evidence, not rank
• Engineers around you got better because you were there, and you can point to specifics.

Nice to Have

• Experience in telecom, payments, or multi-market API platforms
• Familiarity with our stack (React, TypeScript, Next.js, Node, Tailwind, Ruby, Go)
• Experience at companies during a similar scaling phase (50 → 200 engineers)
• Background in design systems, component libraries, or platform/product boundary work at scale.