Staff Software Engineer, Backend - Fintech Engineering (m/f/n)

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SeniorHybryda·WarszawaFull-time

#470303·Dodano 6 dni temu·0

Źródło: InPost

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Tech Stack / Keywords

event sourcing CQRS REST AWS GCP Azure Kafka LLMPCI DSSPSD2

Podsumowanie oferty

InPost Pay is building a fintech platform, and this Staff Engineer will define the technical direction for one of its platform areas: Payments Core, Merchant, or Consumer. The role focuses on backend architecture, cross-team technical leadership, and evolving the agentic development harness.

Wymagania

8+ years in software engineering, including 2+ years in cross-team technical leadership or architecture authority.
3+ years designing distributed payments or fintech systems.
Hands-on experience with multiple tech stacks and expertise in backend engineering.
Solid grounding in distributed systems architecture, including event sourcing, CQRS, domain events, the saga pattern, and state machine or financial entity lifecycle design.
Experience designing service-boundary APIs, including REST, async, and event-based contracts.
Experience reasoning about database trade-offs across relational, time-series, document, and ledger-style databases, and evaluating cloud architecture using AWS, GCP, or Azure.
Experience designing or evolving an agentic engineering harness, including instrumentation, adoption measurement, and iteration.
Working knowledge of LLM tool-use patterns and context management in engineering workflows.
Excellent technical writing, including ADRs, RFCs, and design documents for multiple audiences.
English proficiency at B2 or above.

Nice to have:

2+ years in platform or internal developer tooling engineering.
1+ years of agentic or LLM system design experience.
2+ years in BNPL or lending domain architecture.
PCI DSS or PSD2 architecture compliance experience from the design phase.
Kafka or equivalent streaming architecture experience at scale.
Open-source contributions or technical publishing.
Polish language skills.

Obowiązki

Define and maintain backend technical architecture, including domain boundaries, event contracts, state machine patterns, data consistency models, and cross-service API design across multiple teams.
Author Architecture Decision Records (ADRs) and RFCs, and facilitate technical decision-making across teams with documented reasoning and trade-off analysis.
Evaluate and decide on technology trade-offs involving database selection, cloud services, message broker topology, and consistency models for financial data.
Own the evolution of the agentic development harness, measuring adoption and friction and driving data-based improvements.
Drive technical changes across the organisation by identifying patterns to adopt or deprecate, building the case, and supporting adoption across teams.
Provide technical input into product strategy and mentor Staff-track engineers through design reviews, pairing, and technical writing feedback.

Benefity

Training opportunities for employee development.
Flexible working hours.

Elastyczne godziny

InPost

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