> Markdown version of [/jobs/ext/4431213-ingenieur-d-application-principal](https://www.wearedevelopers.com/jobs/ext/4431213-ingenieur-d-application-principal). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Ingénieur d'application principal - **Company:** Trane Technologies - **Location:** Saint Paul, MN, United States - **Experience:** Expert - **Salary:** $105,228.0 - $146,720.0 - **Contract:** Permanent contract - **Skills:** Computer Programming, Systems Integration, Metasys - **Published:** October 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=6fa06fec8c6167c1 ## About the Role solving complex technical challenges that leave others stumped? Do you want OEMlevel backing, and a clear pathway to long-term career growth?, * Experience: 5+ years of hands-on experience in the commercial HVAC/BAS industry as a Controls Technician, Commissioning Specialist, or Controls Project Specialist. * Technical Depth: In-depth knowledge of HVAC mechanical systems (chillers, air handlers, central plants, VAV systems) and direct digital control (DDC) applications. * System Familiarity: Demonstrated proficiency in programming, commissioning, and troubleshooting Trane building automation systems (Tracer® SC+, Synchrony, Ensemble, TU) or comparable industry platforms (Tridium/Niagara N4, Johnson Controls Metasys, Automated Logic, Distech, Siemens, or Honeywell). * Education: An Associate degree (2+ years) in Electrical/Mechanical Engineering Technology, Building Automation Systems, HVAC Technology, or equivalent military/field experience. * Mobility & Licensing: Ability and willingness to travel 75%+ within the continental U.S. (with occasional international travel). Must hold a valid driver's license with an insurable driving history. * Communication & Leadership: Strong communication skills with the ability to articulate technical solutions to both technical peers and non-technical stakeholders. Physical Requirements & Working Conditions This role blends hands-on mechanical room and rooftop site work with digital diagnostic programming: * Comfort working at heights, including climbing extension and fixed ladders up to 20 feet (and occasionally 50+ feet), and walking rooftops in various outdoor weather conditions. * Ability to routinely stand on concrete surfaces for up to 4 hours at a time. * Ability to bend, stoop, kneel, reach overhead, squat to floor level, and maneuver in mechanical spaces and confined areas (as small as 30" vertical x 45" horizontal). * Ability to safely lift, push, pull, and carry tools and equipment weighing up to 40 lbs. regularly, and occasionally up to 50 lbs. while safely ascending/descending rated ladders (up to 350 lb. total working load capacity). * Ability to wear required Personal Protective Equipment (PPE) including safety toe boots, safety goggles, hard hat, and fall arrest harnesses. * Ability to operate a motor vehicle safely and legally. ## Description As a Senior Controls Technician on the ACES team, you will bring complex building automation systems from blueprint to flawless operation: * Advanced System Commissioning & Programming: Program, calibrate, validate, and commission complex DDC/BAS architectures for commercial, industrial, healthcare, education, and mission-critical facilities. * Elite Troubleshooting & Issue Resolution: Serve as the frontline technical authority tackling difficult system integration issues, communication bus faults, network anomalies, and sequence-of-operation discrepancies. * Remote & On-Site Field Support: Provide both hands-on site support and remote connected troubleshooting to local Trane field technicians, project engineers, and mechanical sub-contractors. * Standards & QA Leadership: Review, establish, and enforce programming and installation standards, ensuring best practices and code compliance across offices. * Product Validation & Innovation: Collaborate with engineering teams to test, evaluate, and provide real-world feedback on new, existing, and next-generation Trane hardware and software releases. * Client & Team Collaboration: Deliver outstanding customer satisfaction by working closely with building engineers, facility directors, and project teams to hand over fully optimized, energy-efficient systems.