Senior Backend Engineer - Pricing & Invoicing Platform

Virta Ltd; Helsinki; On-site; EUR 90,000 - 120,000; Full time

Job description

Overview

Virta is recruiting two Senior Software Engineers for its Pricing & Finance Services team to build and evolve the core services that set tariffs, calculate settlements, and generate invoices for our EV charging platform.

Responsibilities

• Design and implement pricing, tariff, settlement, and invoicing logic for legacy and new services.
• Own the technical direction for the team’s backend services, including data modelling, service boundaries, and architecture patterns that ensure correctness and testability.
• Write and maintain APIs that expose financial functionality to external and internal stakeholders.
• Enforce accuracy, auditability, and idempotency as first‑class requirements in transactional systems.
• Define and uphold testing strategy, code review practices, and release discipline.
• Lead incident response and drive post‑mortem analyses when production issues occur.
• Mentor junior engineers through design reviews, pairing, and direct feedback.
• Collaborate with product, operations, and other engineering teams to align on contracts and service boundary decisions.

Qualifications

• Deep, demonstrated experience building production backend services.
• Strong command of TypeScript and NestJS; comfort with PHP is required.
• Expertise in data modelling, SQL, and designing schemas that meet financial‑grade correctness.
• Track record of creating clean service boundaries and testable code.
• Ability to operate independently and own significant technical decisions.
• Experience mentoring engineers and setting quality standards.
• Strong communication skills in English.
• Comfort with AI coding tools and an understanding of when they are appropriate.
• Residency and work rights in Finland; willingness to work onsite regularly in a hybrid model.

Nice to Have

• Experience in EV charging, energy, mobility, or IoT sectors.
• Background in billing, payments, settlements, accounting systems, or other domains where financial correctness is critical.
• Experience evolving services from a legacy monolith to a domain‑oriented architecture.
• Familiarity with event‑driven design and asynchronous processing trade‑offs in transactional systems.

Location & Employment

The position is based in Finland. Employees are expected to work onsite on a regular basis, with a hybrid working arrangement.