{"id":2189565,"url":"https://alion.io/job/inpost-staff-software-engineer-frontend-fintech-platform-mfn","title":"Staff Software Engineer, Frontend - Fintech Platform (m/f/n)","company":{"id":3343,"name":"InPost","domain":"inpost.eu","url":"https://alion.io/company/inpost","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":8,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":26,"computed_at":"2026-10-21T05:46:15Z"}},"role":"Frontend","role_family":"Frontend","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":63000,"max_usd":142000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":99},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"GraphQL","optional":false},{"name":"Rest API","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"LLM","optional":true},{"name":"React Native","optional":true},{"name":"React.js","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-10-09T14:53:19Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-21T05:45:22Z","board_verified":true,"closed_at":null,"days_open":11,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":11},"description":"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.\nWe’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.\n InPost's FinTech Platform team is looking for a Staff Engineer to define the technical direction for one of our platform areas - Payments Core, Merchant, or Consumer. You'll multiply team output through architecture clarity, engineering standards, and cross-team technical leadership, while helping evolve our agentic engineering harness in a data-driven way.\nYou'll own the evolution of fundamental technology decisions across your area - ensuring they're sound, defensible, and viable for the long term - and act as the technical throughline between engineering teams, product strategy, and the organisation's wider architecture standards.\n→ Hybrid working model: preferably 1 day per week in the Warsaw or Cracow office.\nResponsibilities:\nDefine and maintain frontend architecture across the area: component architecture, design-system boundaries, micro-frontend patterns, client-side state management, and performance budgets across multiple teams\nAuthor Architecture Decision Records (ADRs) and RFCs for frontend decisions, facilitating technical decision-making across teams with documented reasoning and clear trade-off analysis\nEvaluate and decide on fundamental frontend technology trade-offs: framework and library selection, build tooling, rendering strategy (SSR / CSR / ISR), and accessibility standards\nOwn the evolution of the agentic development harness for frontend workflows - instrument it, measure adoption and friction, and drive improvements with data\nDrive org-wide technical change: identify frontend patterns and design-system components to adopt or deprecate broadly, build the case, and see adoption through across teams without direct authority\nProvide technical input into product strategy; mentor Staff-track engineers through design reviews, pairing, and technical writing feedback\n 8+ years in software engineering, including 2+ years in cross-team technical leadership or architecture authority\n3+ years building customer-facing or merchant-facing products in payments or fintech\nExpert-level experience with a modern frontend framework (e.g. React) and TypeScript at scale\nDesign-system and component-architecture experience across multiple teams or products\nMicro-frontend architecture and client-side state management patterns\nPerformance engineering expertise - Core Web Vitals, bundle optimisation, and rendering-strategy trade-offs (SSR / CSR / ISR)\nAccessibility standards (WCAG) built into architecture, not bolted on\nAPI-consumption patterns: REST, GraphQL, async, and event-based contracts\nExperience designing or evolving an agentic engineering harness for frontend workflows - instrumentation, adoption measurement, iteration\nExcellent technical writing - ADRs, RFCs, and design docs for multiple audiences\nEnglish proficiency at B2 or above\nUniversity degree in Computer Science, IT, or a related field\nNice to have:\n2+ years in platform or internal developer tooling engineering\n1+ years of agentic/LLM system design experience\n2+ years in BNPL or lending domain product experience\nMobile app architecture (e.g. React Native) alongside web\nReal-time UI patterns (WebSockets, streaming updates)\nInternationalisation / localisation architecture at scale\nOpen-source contributions or technical publishing\nPolish language skills\n Opportunity to work in a diverse, international, and cross-functional environment, along with leading experts. \nYou work and learn from a senior leader and their leadership team, expanding your experience and exposure in the e-commerce and logistics industries. \n InPost is a growing company that offers its people an increasing number of opportunities in several locations in Europe. \nFulfilling careers with a range of benefits for people and investing in providing training opportunities for their development. \nYou will feel a part of the InPost community that makes an impact on sustainability, convenient deliveries, and the circular economy every day. \nExcellent working environment and flexible hours\n We offer B2B type of contract","description_format":"text","description_chars":4669,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"Polish","level":"All levels","optional":true},{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Services","Delivery","Logistics","Courier Services"],"lifecycle":[{"event":"open","at":"2026-10-09T17:24:50Z"}],"visa":[],"liveness":{"score":77,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.851,"p_room":0.9,"age_days":11,"expected_fill_days":26,"reasons":["conf:0","velocity","win:mid","comp:brand"],"computed_at":"2026-10-21T05:46:15Z"},"pay":null,"html_url":"https://alion.io/job/inpost-staff-software-engineer-frontend-fintech-platform-mfn","json_url":"https://alion.io/job/inpost-staff-software-engineer-frontend-fintech-platform-mfn.json","meta":{"generated_at":"2026-10-21T11:21:26Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":16027,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-22T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3343},"rest":"https://alion.io/mcp/rest/get_company?id=3343"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Finpost-staff-software-engineer-frontend-fintech-platform-mfn"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Finpost-staff-software-engineer-frontend-fintech-platform-mfn"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Finpost-staff-software-engineer-frontend-fintech-platform-mfn"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/inpost-staff-software-engineer-frontend-fintech-platform-mfn\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Finpost-staff-software-engineer-frontend-fintech-platform-mfn"}]}