Staff Software Engineer, Devops - Fintech Platform (m/f/n)

InPost FinTech is looking for a Staff Engineer to define the technical direction for our infrastructure, deployment, and operational reliability - across Payments Core, Merchant, and Consumer. You'll multiply team output through infrastructure architecture clarity, engineering standards, and cross-team technical leadership, while owning the evolution of the agentic engineering harness's operational backbone.
You'll own the evolution of fundamental infrastructure and platform decisions across the organisation — cloud topology, deployment pipelines, observability, and security posture — ensuring they're sound, defensible, and viable for the long term. You'll report to the Senior Engineering Manager and act as the technical throughline between engineering teams, security, and compliance.
→ Hybrid working model: preferably 1 day per week in the Warsaw or Cracow office.
Responsibilities:
Define and maintain infrastructure architecture across the area: cloud topology, networking, environment strategy, deployment pipelines, and infrastructure-as-code patterns across multiple teams
Author Architecture Decision Records (ADRs) and RFCs for infrastructure and platform decisions, facilitating technical decision-making across teams with documented reasoning and clear trade-off analysis
Evaluate and decide on fundamental infrastructure trade-offs: cloud service selection, container orchestration, message broker topology, observability stack, and cost optimisation
Own the evolution of the agentic engineering harness's infrastructure layer — CI/CD integration, agent sandboxing, tool-execution environments, and guardrails; instrument adoption and friction, and drive improvements with data
Drive org-wide technical change: define golden paths and paved roads for deployment and operations, build the case, and see adoption through across teams without direct authority
Provide technical input into platform and product strategy; mentor engineers on reliability, security, and operational excellence through design reviews and pairing
8+ years in software or platform engineering, including 2+ years in cross-team technical leadership or architecture authority
3+ years building infrastructure for distributed payments or fintech systems
Deep expertise in container orchestration (e.g. Kubernetes), CI/CD pipeline design, and infrastructure-as-code (e.g. Terraform)
Cloud architecture evaluation and operation (AWS / GCP / Azure) at organisation scale
Observability and SRE practices: monitoring, alerting, incident response, and SLO design
Security and compliance architecture: secrets management, network security, and controls relevant to PCI DSS / PSD2
Experience designing or evolving the infrastructure layer of an agentic engineering harness — sandboxing, tool-execution environments, guardrails
Database and message-broker operational trade-off reasoning at scale
Excellent technical writing — ADRs, RFCs, and design docs for multiple audiences
English proficiency at B2 or above
University degree in Computer Science, IT, or a related field
Nice to have:
2+ years in platform or internal developer tooling engineering
1+ years of agentic/LLM system design experience
Kafka or equivalent streaming architecture experience at scale
Service-mesh architecture experience
FinOps / cloud cost-optimisation experience
Chaos engineering or resilience-testing experience
Open-source contributions or technical publishing
Polish language skills

Employment type
Full-time

Work arrangement
Hybrid