Chief Technology Officer; CTO – Transactional Systems

We are publishing on behalf of the Client the following position:

• Design and launch transaction infrastructure (payments, bookings, statuses)
• Build event-driven architecture
• Implement idempotent operations (no double charges, no inconsistent states)
• Integrate payment providers (webhooks, retries, reconciliation)
• Build full auditability and traceability of all operations
• Control security: access rights, roles, secrets
• Organise production support: SLA, incidents, post-mortems
• Architectural governance of the development team (ownership of outcomes, not coding personally)

Proven real-world experience with:

• payments
• webhooks
• idempotency
• reconciliation of payments, statuses, and balances

Clear understanding that a successful HTTP response does not equal a successful operation

Design and maintenance of:

• state machines
• event-driven processes

Ability to clearly explain:

• system states
• recovery after failures
• handling of repeated or delayed events

Hands‑on implementation of:

• RBAC (roles & permissions)
• audit logs (who, when, what changed)
• secrets management
• Experience handling legally sensitive data

Experience running production systems where:

• SLAs exist
• incidents happen
• post‑mortems are mandatory

Clear ownership mindset: system failure is a responsibility, not an excuse

• Fin Tech, escrow, booking, wallet systems
• Regulated or quasi‑banking environments
• Scaling transactional systems
• Participation in incidents involving real financial loss

• Experience limited to marketplaces, landing pages, CRM, admin panels
• Primary focus on UI/UX with backend as secondary
• No experience with real money or production incidents
• Responsibility limited to code, not outcomes

• High level of autonomy and responsibility
• Direct impact on core product architecture
• Environment where quality matters more than speed
• Project requires 100% involvement and full professional commitment

• English – fluent
• Other languages are a strong asset

This role is published on behalf of a client. Kindly submit your CV in English.