Staff Backend Product Engineer

Invopop
Madrid
Workplace: HybridFull timeUSD 90,000 - 140,000 annuallyFunction: Communications, PR & CommunityExperience: 10+ yearsSkills: ["Communication","Leadership","Problem-solving","Customer empathy","Mentorship"]

Staff Backend Product Engineer at Invopop leads end-to-end development of Apps that handle integrations for global invoicing, designing scalable backend services in Go atop a modular architecture (NATS, CQRS, Kubernetes on GCP). You’ll own research, requirements, and production maintenance, mentor peers, and influence product and technical direction while engaging with customers in a fast-growing fintech environment in Madrid.

Loading

Loading job details...

Preparing the role view and application actions.

FursaFursa
Invopop
Invopop
5 months ago

Staff Backend Product Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 6 hours agoStatus: Live

Job Summary

Staff Backend Product Engineer at Invopop leads end-to-end development of Apps that handle integrations for global invoicing, designing scalable backend services in Go atop a modular architecture (NATS, CQRS, Kubernetes on GCP). You’ll own research, requirements, and production maintenance, mentor peers, and influence product and technical direction while engaging with customers in a fast-growing fintech environment in Madrid.
Location: Madrid
Workplace: Hybrid
Employment Type: Full time
Job Function: Communications, PR & Community

Key Responsibilities

  • •Own several Apps end-to-end from initial research to production maintenance and customer support.
  • •Investigate new countries and systems: read regulations and technical docs, turn ambiguity into clear requirements, and consult local experts when needed.
  • •Design and build integrations in Go on top of a modular architecture (NATS, CQRS patterns, Kubernetes on GCP).
  • •Drive product decisions: define what “good” looks like, choose trade-offs, cut scope when needed, and ship.
  • •Raise the bar across the team: review PRs, mentor engineers, and influence product and technical direction (architecture, patterns, quality).

Pay and Benefits

Salary: USD 90,000 - 140,000 annually

Key Requirements

  • •10+ years of backend experience with APIs, distributed systems, or complex domains (Go a plus but not required).
  • •Fluent English (internal working language).
  • •Strong product judgment: ability to scope, prioritize features, and make trade-offs under ambiguity.
  • •Customer empathy: comfortable speaking with customers and translating feedback into product decisions.
  • •High agency: led projects end-to-end and improved systems while mentoring others.
Experience:10+ yearsBackendAPIsDistributed systemsGo
Skills:CommunicationLeadershipProblem-solvingCustomer empathyMentorship
Languages:English
Tech Stack:GoGolangNATSCQRSKubernetesGCPAPIs

Eligibility

Visa:US citizenship/visa not required
Work Authorization:Sponsorship available.

Company Brief

Invopop
Provides a developer-focused electronic invoicing platform and APIs to build, send, and manage interoperable e-invoices, leveraging open standards like UBL and Peppol to simplify B2B and B2G digital invoicing workflows.
Industry: API Platforms
Company Size: Small (11 to 50 employees)
Growth: Early Stage Startup
Headquarters: United States
WebsiteLinkedIn