Location: Europe (Remote)
Company: Voyagu
Product: Radar
Voyagu is a travel-tech company building Radar, a production platform that has been operating for over five years and is now evolving into a multi-agency SaaS system.
We are looking for a Staff Backend Engineer to own the financial core of the platform — the system responsible for revenue calculations, payments, costs, and ledger-style financial events.
This role focuses on financial systems architecture, not generic backend development.
The challenge is evolving a complex production system into a structured, ledger-driven financial platform while ensuring deterministic profit and financial correctness.
What you will work onYou will take ownership of the Economic Core of the platform and help shape how financial logic is implemented across the system.
Key areas include:
- ledger-style economic events
- revenue and profit calculation logic
- payment and cost normalization
- client and supplier balances
- financial lifecycle transitions
- enforcing financial invariants and consistency rules
You will join during an active architectural transformation where the financial foundation of the platform is being redesigned.
Tech Stack:We operate in a distributed, event-driven environment with a strong focus on transactional consistency and data correctness.
For this role, prior experience with financial or transactional systems is more important than specific technologies.
- Python (backend services)
- PostgreSQL (core data layer, complex relational modeling)
- AWS (Lambda, SQS, S3)
- Infrastructure as Code (AWS CDK)
We are looking for engineers who have built real financial or transactional systems.
Ideal background includes experience with:
- payment platforms
- fintech systems
- billing infrastructure
- marketplaces with financial flows
- accounting or ERP systems
- subscription billing platforms
- 8+ years of backend engineering experience
- experience owning financial or transactional domain logic
- experience evolving financial systems in production
- strong relational database design skills
- ability to reason about money flows, balances, and reconciliation
The Economic Core is the financial spine of the platform.
Correct financial architecture determines:
- revenue correctness
- platform scalability
- ability to evolve into SaaS
- reliability of business operations
This role has direct architectural ownership of the financial foundation of Radar.
Hiring Process- Recruiter screening
- Domain system interview
- Architecture deep dive
- Final ownership discussion
Skills Required
- 8+ years of backend engineering experience
- experience owning financial or transactional domain logic
- experience evolving financial systems in production
- strong relational database design skills
- ability to reason about money flows, balances, and reconciliation
What We Do
Voyagu is a San Francisco-based travel management platform that connects premium travelers with travel experts for better and easier planning, booking, and managing of their trips. We are passionate travel nerds who genuinely believe that technology and human professionalism can make travel better, and we are inspired to prove it to the world. The focus is on clients and giving the travel agents technology to deliver the best travel offering and the ability to elevate the overall travel experience. We are bringing the breakthrough change by developing the Voyagu platform for travel agents to create offers, sell, and do travel management and support. This solution will connect the happy triangle: the client, the travel agent, and the travel suppliers. Our office locations in the U.S., East and West Coast, Europe, and Eastern Europe give us an international presence and proximity to our partners and investors. Growing remote work footprint, we give employment opportunities for tech and travel-inspired professionals worldwide. We are a diverse team, and everyone has their personality, but there are naturally present values in all of us that make us a team united by our No BS! culture. We are honest, very ambitious, and hungry to get results, and we act with respect, accepting everyone for who they are and their belongings, even if they are different and don’t agree. In our team, we want to have diverse, open-minded, agile people who are passionate about travel and excited to grow our company together. All people who join us have evident cultural fit expressed in passion for travel, agility, focus on the result, straight talk, and no BS.
