{"id":870827,"url":"https://alion.io/job/lendurai-software-engineer-control-systems","title":"Software Engineer, Control Systems","company":{"id":695541,"name":"Lendurai","domain":"lendurai.com","url":"https://alion.io/company/lendurai","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-01T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tallinn, Estonia"],"countries":["EE"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":4000,"max":6500,"currency":"EUR","period":"month","gross":true,"usd_annual":90492},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"ArduPilot","optional":false},{"name":"C++","optional":false},{"name":"Computer Vision","optional":false},{"name":"Human-in-the-Loop","optional":false},{"name":"Linux","optional":false},{"name":"Machine Learning","optional":false},{"name":"MAVLink","optional":false},{"name":"Unix","optional":false},{"name":"Visual-Inertial Odometry","optional":false}],"status":"live","first_seen_at":"2025-12-08T13:21:09Z","employer_posted_date":"2025-12-08","last_verified_at":"2026-09-30T03:32:30Z","board_verified":true,"closed_at":null,"days_open":297,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":296},"description":"About the company and the role\nAt Lendurai, we enable unmanned aerial vehicles (UAVs) to operate independently of global navigation satellite systems and radio control, using computer vision and machine learning. We partner with multiple UAV manufacturers to deliver cost-effective capabilities to public sector and defence customers. Our team has deep experience in aerospace engineering, defence tech, and autonomous systems, with backgrounds at companies like Bolt (EE), Open Cosmos (UK), and Starship Technologies (EE).\nAs a Control-Systems Engineer you will own the algorithms that keep our drones stable, responsive, and mission-capable without satellite guidance.\nWhat you will be doing\nDesign, implement, and tune real-time flight-control algorithms (attitude, position, and trajectory loops) targeted at GNSS-denied missions.\n\nDevelop high-rate state-estimation and sensor-fusion pipelines that blend IMU, barometer, optical flow, VIO, and SLAM data.\n\nPort and optimise these pipelines on flight computers (Jetson Orin, Raspberry Pi CM5, i.MX 8M plus) under real-time constraints.\n\nExtend and customise PX4 or write bare-metal control stacks where needed.\n\nCreate Software-in-the-Loop (SITL) and Hardware-in-the-Loop (HITL) test environments; iterate rapidly between simulations and field flights.\n\nInstrument test vehicles, run flight campaigns, and mine logs to improve robustness in wind, vibration, and electromagnetic interference.\n\nWe are looking for\nCore skills\nApplied math: linear algebra, calculus, probability. For working with the flight controller’s EKF.\n\nC++20: knowledge of the memory and concurrency models of the language.\n\nControl fundamentals: PID, cascade loops, filters, estimation. Time and frequency domains.\n\nSystem identification methodology.\n\nUseful additional skills\nKnowledge of PX4/Ardupilot and concepts like SITL, MAVLink protocol.\n\nExperience working with sensors - sampling rates, synchronisation, filtering, fusing.\n\nExperience in any: machine learning, data analysis, signal processing, IoT\n\nWorks in UNIX-based environment (Raspberry PI, Jetson, Desktop Linux or MacOS)\n\nWhat we offer\nMonthly gross salary €4,000-6,500 based on experience and impact\n\nStock options\n\nA mission-driven team that values ownership, curiosity, and a hands-on approach to solving defense challenges\n\nEarly technical influence in a growing defense tech startup\n\nA focus on outcomes\n\nJoin Lendurai to be part of the forefront of defence technology innovation.","description_format":"text","description_chars":2479,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Stock options"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Electrical & Electronic Engineering"],"lifecycle":[{"event":"open","at":"2026-09-13T16:56:42Z"},{"event":"open","at":"2026-09-30T04:01:45Z"}],"liveness":{"score":2,"band":"cold","label":"Long shot","p_open":1,"p_active":0.079,"p_room":0.28,"age_days":296,"expected_fill_days":25,"reasons":["conf:26","win:tail","crowd:"],"computed_at":"2026-10-01T05:45:00Z"},"pay":{"stated_usd_annual":90492,"is_top_pay":false},"html_url":"https://alion.io/job/lendurai-software-engineer-control-systems","json_url":"https://alion.io/job/lendurai-software-engineer-control-systems.json","meta":{"generated_at":"2026-10-02T01:55:46Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2497,"day_limit":5000,"remaining_today":2503,"minute_limit":60,"resets_at":"2026-10-03T00:00:00Z"}}}