Field Service Engineer

Threod Systems is a leading Provider of Battle-Tested Military Technology Solutions. We are a world-class technology and engineering company that designs and manufactures market-leading Unmanned Aircraft Systems, Electro-Optical Systems and Aircraft Launching Systems for critical defence missions, governmental and commercial applications.

We are seeking a skilled and hands-on
Field Service Engineer
to join our team, providing worldwide support for our advanced launcher systems. This role combines global on-site service—including maintenance, diagnostics, and client training—with in-house testing, fixture development, and product improvement initiatives.

Key Responsibilities:
Field (primary):

• Execute assigned service tickets end-to-end: perform preventive/corrective maintenance, diagnostics, repairs/replacements, and verification tests on mechanical, hydraulic, pneumatic, electrical, and control systems.
• Run diagnostics/troubleshooting using the launcher control panel, remote diagnostic device, check control modules and perform sensor calibration; confirm fixes with functional tests.
• Execute commissioning, demos, and handovers; support test launches at client's site.
• Pre-deployment prep: review tickets scope and minimum incident information, confirm parts/tools and spares kits, plan travel/logistics/visas.
• Provide clear on-site communication and operator training.
• Post-job documentation: complete the digital service report (checklist, photos, parts traceability etc.), collect signatures and flag inputs needed for root cause analysis.

Factory (when not traveling):

• Perform end-of-line tests on complete units and bench tests on subassemblies (e.g., hydraulic manifolds/cylinders, compressors/engines, harnesses, control modules).
• Design/build test setups/fixtures with Engineering; draft concise work/test instructions; keep basic calibration records.
• Verify fixes in factory/field tests, update PM checklists, test instructions, and training materials.
• Maintain tools, and base stock, assist with inventory cycle counts and spares forecasting.

Product Feedback and Continuous Improvement:

• Capture and synthesize field issues/recurring faults/usability pain points.
• Brief Engineering regularly; contribute to root cause analysis; propose design/test/process improvements and change requests.

Compliance and Conduct:

• Follow Threod and site safety, security, and data-handling procedures, respect operational security and local rules at all times.

About you:

• Education: Technical diploma or vocational training in Mechatronics, Electromechanics, or Industrial Maintenance.
• Experience: 3+ years hands-on with mechanical, hydraulic, pneumatic, and electrical systems; industrial compressors and diesel engines; field maintenance on mobile/defence or heavy equipment.
• Diagnostics and repair: Strong troubleshooting; use of Threod diagnostic console/software (training provided), basic control module checks, sensor calibration, pressure testing, harness/connector work.
• Reporting: Can read mechanical, hydraulic, pneumatic, and electrical drawings/schematics and produce clear service reports.
• Customer interaction and service: Confident on client sites – professional, courteous, and composed; communicates clearly with non-technical users, sets expectations, provides status/ETAs, and follows through to closure.
• Travel readiness: Global travel up to 90%; short-notice deployments incl. weekends/holidays.
• License and documents: Valid passport and category B and BE driver's license; able to obtain visas/permits and travel vaccinations as needed.
• Work authorization: Eligible to work in Estonia.
• Languages: Estonian and English (B2 or higher).
• Physical ability: Work outdoors/under vehicles; lift 25-30 kg; operate in remote environments.
• Safety and conduct: Safety mindset (lockout/tagout, PPE), data handling discipline, and respect for site security/OPSEC and export-control rules.

What we offer:

• A culture that values initiative, innovation, and continuous learning.
• Daily allowances and paid travel time per policy.
• Training and certifications.
• Meaningful impact on real-world missions with high autonomy and clear ownership.
• Wellness benefits (Confido health insurance or Stebby) and a day off during your birthday week.

This is an on-site role based in Tallinn, Estonia. We can only accept applications from candidates who are already in the area