{"id":2370674,"url":"https://alion.io/job/rnrs-solutions-full-stack-developer","title":"Full Stack Engineer","company":{"id":687961,"name":"RNRS Solutions","domain":"rnrs.solutions","url":"https://alion.io/company/rnrs-2","size_band":"1001-5000","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":95,"open_postings":9,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":114,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","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":46000,"max_usd":82000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":96},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"gRPC","optional":false},{"name":"Linux","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Rust","optional":false},{"name":"TCP/IP","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"Asio","optional":true},{"name":"Axum","optional":true},{"name":"C","optional":true},{"name":"CI/CD","optional":true},{"name":"CMake","optional":true},{"name":"JavaScript","optional":true},{"name":"Qt","optional":true},{"name":"Time Series","optional":true},{"name":"ZeroMQ","optional":true}],"status":"live","first_seen_at":"2026-10-12T15:31:58Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-30T08:43:52Z","board_verified":true,"closed_at":null,"days_open":17,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":17},"description":"Our client is a European deep-tech startup developing next-generation radar systems for detecting and tracking small, low-flying drones.\nWe are looking for a Fullstack Engineer with 3-5 years of experience, strong Rust and/or C++ skills, and practical frontend experience. You will build software for radar control, monitoring and real-time visualization, working closely with embedded, signal-processing and AI/ML engineers.\nResponsibilities\nDevelop reliable, high-performance backend services in Rust and/or C++.\n\nBuild interfaces in React and TypeScript for system configuration, monitoring and visualization of detections and tracked objects.\n\nConnect backend services and frontend applications through WebSocket, REST APIs or gRPC.\n\nIntegrate continuous sensor data streams, telemetry and external systems using TCP/IP, UDP and binary protocols.\n\nOptimize latency, throughput, memory usage and frontend responsiveness.\n\nContribute to modular architecture, automated testing, documentation and Docker-based workflows.\n\nRequirements\n3-5 years of professional software development experience.\n\nStrong practical knowledge of Rust and/or modern C++.\n\nExperience with React and TypeScript or comparable frontend technologies.\n\nExperience with API design, network programming and frontend-backend integration.\n\nUnderstanding of asynchronous programming, concurrency and multithreading.\n\nExperience developing for Linux and working with Git and Docker.\n\nStrong debugging skills and the ability to work independently in an evolving R&D environment.\n\nNice to have\nExperience with radar, robotics, sensor systems or hardware-software integration.\n\nFamiliarity with Tokio, Axum, Boost.Asio, gRPC, Protocol Buffers or ZeroMQ.\n\nExperience with geospatial interfaces, WebGL/Canvas or Qt/QML.\n\nKnowledge of profiling, CI/CD, CMake or time-series data storage.\n\nWhat we offer\nDirect ownership of technical decisions and a visible impact on the product. Work with a multidisciplinary R&D team on real-time sensor applications where software performance, reliability and usability matter.","description_format":"text","description_chars":2074,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-12T17:31:51Z"}],"visa":[],"liveness":{"score":52,"band":"ok","label":"Likely open","p_open":1,"p_active":0.516,"p_room":1,"age_days":17,"expected_fill_days":114,"reasons":["conf:1","agency","win:early"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/rnrs-solutions-full-stack-developer","json_url":"https://alion.io/job/rnrs-solutions-full-stack-developer.json","meta":{"generated_at":"2026-10-30T13:15:34Z","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":146,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":687961},"rest":"https://alion.io/mcp/rest/get_company?id=687961"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frnrs-solutions-full-stack-developer"},{"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%2Frnrs-solutions-full-stack-developer"},{"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%2Frnrs-solutions-full-stack-developer"},{"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/rnrs-solutions-full-stack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frnrs-solutions-full-stack-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2370674}},{"tool":"search_jobs","arguments":{"company":"rnrs.solutions","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2370674},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}