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

InPost Pay is building its own fintech platform from the ground up. It’s a large-scale, international initiative where engineers will have the opportunity to shape the architecture, build core fintech components, and create solutions designed to operate at InPost’s scale.

We’re building a lean, highly effective engineering organization in Poland, with AI-native engineering at its core. We’re looking for strong engineers who are comfortable with agentic engineering, from experienced professionals building complex systems and engineering tooling to a new generation of engineers who have embraced AI-driven development from the start of their careers.

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

• Opportunity to work in a diverse, international, and cross-functional environment, along with leading experts. 
• You work and learn from a senior leader and their leadership team, expanding your experience and exposure in the e-commerce and logistics industries. 
•  InPost is a growing company that offers its people an increasing number of opportunities in several locations in Europe. 
• Fulfilling careers with a range of benefits for people and investing in providing training opportunities for their development. 
• You will feel a part of the InPost community that makes an impact on sustainability, convenient deliveries, and the circular economy every day. 
• Excellent working environment and flexible hours
• We offer B2B type of contract