Senior Backend Software Engineer

The Role: Due to team growth, we are seeking an experienced Software Engineer to join our Sat OS team, which develops the high-level operating system and file transfer layer for the spacecraftThe successful candidate will play a crucial role in developing software for our satellite systems, contributing to the expansion and enhancement of our space and ground-based data transfer capabilities. Ideal candidates will embrace the commercialization of nanosatellite systems and adapt to low-cost, fast-paced systems design, development, and implementation methodologies that set Spire apart from our competition. In this fast-paced environment, the design to launch cycle is measured in weeks and months, not years!What You’ll Do as a Sat OS Software Engineer:Develop and enhance satellite-side applications with a focus on file transfer to and from the satellite and its payloadsContribute to the design and implementation of the next generation of Spire’s File Transfer architecture (Rust)Ensure that Spire’s file transfer services meet internal and mission-driven security standardsEnhance observability and fault-tolerance of Spire’s file transfer servicesTake responsibility for the performance of critical file transfer services that contribute to the movement of data to and from Spire’s entire fleet of nanosatellitesContribute to the design and implementation of highly available, fault-tolerant systems to meet the demands of new customer missionsPerform ground-based testing and in-orbit verification of new software servicesCoordinate closely with Spire’s communications team, systems engineering, product owners, and internal customers to ensure alignment and optimal integration with interfacing hardware and software servicesCreate and maintain comprehensive documentation for APIs and system architecturesImplement observability solutions for space and ground-based services to provide a clear and actionable view of service performanceBasic Skills/Qualifications:5+ years’ experience in professional software developmentProven experience in production-grade software development using at least one compiled languageProficiency in Python or equivalent high-level languageKnowledge of Linux-based developmentExcellent documentation, collaboration, and communication skillsSystems-level thinking (distributed, scalable, highly available) with an appetite for creating and adapting applicationsHands-on experience with Cloud Computing Platforms (AWS), IaC and modern CI/CD pipelinesKnowledge of version control systemsPreferred Skills/Qualifications:Proficiency in Python and RustExperience working under regulatory frameworks such as NIST and FARFamiliarity with cybersecurity principles and platforms such as WizExperience with operating a live, highly available critical system at scaleExperience writing applications between L3 and L7 networking layers and familiarity with L2/L3 protocolsExperience with modern AI development toolingProficiency in scripting languages like BashThis role is primarily backend and platform focused. We are generally looking for engineers with stronger backend and systems experience rather than heavily frontend-focused backgrounds.Spire operates a hybrid work model, and this position will require you to work a minimum of three days per week in the office.Access to US export-controlled software and/or technology may be required for this role. If needed, Spire will arrange the necessary licenses—this is not something candidates need to have before applying. #LI-MK1The anticipated base salary range for this position is listed below. Final base salary for this role will be based on the location, skills, experience and qualifications. In addition to base compensation, this role may be eligible for annual equity awards and our employee benefits program, including vacation, sick, and personal time off; optional medical, dental, vision, life, and disability coverage; a 401(K) plan; health and wellness reimbursement program; and participation in Spire’s Employee Stock Purchase Plan.Salary Range$130,500—$171,000 USDGlobal Perksð️ Name Your Satellite Program (NYSP)ð Launch Attendanceð Generous Time Off Policyð Education Assistance Programð Employee Assistance Program (EAP)ð Employee Stock Purchase Program (ESPP)ð Family Leaveðª Fitness Reimbursement𧡠Employee Referral Programð Healthy snacks & beverages in every officeAbout SpireWeimprove life on Earth with data from space.Spire Global is a space-to-cloud analytics company that owns and operates the largest multi-purpose constellation of satellites. Its proprietary data and algorithms provide the most advanced maritime, aviation, and weather tracking in the world. In addition to its constellation, Spire’s data infrastructure includes a global ground station network and 24/7 operations that provide real-time global coverage of every point on Earth.Spire is Global and our success draws upon the diverse viewpoints, skills and experiences of our employees. We are proud to be an equal opportunity employer and are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender identity or veteran status.To help maintain a safe and secure workplace for Spire employees, all candidates who receive a conditional offer will be requiredto complete a background check. This may include criminal history and employment verification.Please take a moment to review Spire's Global Data Privacy Notice for Employees, Contractors, Candidates and Visitors, as well asSpire's Privacy Policy.Kindly be advised that communication regarding your application may come from @spire.com, @recruiting.spire.com, or from Candidate.fyi (our scheduling tool).