Software Engineer I/II, Flight Software

Heartaerospace

Los Angeles, CA Role Overview: At Heart Aerospace we are developing the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission As a Senior/Staff Software Engineer on the Flight Software Team, you are responsible for all aspects the development of the software on the aircraft. You will interface with other engineers to develop and understand requirements, architect and writing high quality code, build tests and test infrastructure, documentation, and provide support through the software lifecycle. You will report to the Manager of Flight Software and collaborate with other engineers as part of a multi-functional team. Every engineer on the team is responsible for laying the technological foundation for the aircraft software and supporting systems, including but not limited to implementing aircraft control functions on embedded systems, developing aircraft models and simulation tools, implementing critical fault tolerance mechanisms, and building hardware and software test systems. Key Responsibilities include but are not limited to: * Create highly reliable embedded software that control critical systems on Heart’s aircraft. * Work with interdisciplinary teams to scope, design and build next generation hybrid electric aircraft capabilities, including engine controllers, battery management systems, flight control actuators, flight control systems and aircraft data networks. * Develop tools that allow for test execution across multiple environments, ranging from high fidelity simulated software environments, to full scale test stands. * Invent new systems that enable more frequent and reliable software deployment, test execution, and data analysis as part of a continuous integration and release system. * Mentor junior engineers and set best practices for the team. You'll Bring These Qualifications as a Senior Software Engineer: * Bachelor's or above in computer science, electrical engineering, or similar engineering discipline. * 5+ years professional experience writing safety-critical code for vehicles, or similar applications. * Excellent verbal and written communication skills in English. * Passion for aircraft and Heart’s mission. You'll Bring These Qualifications as a Staff Software Engineer:  * 8+ years professional experience writing safety-critical code for vehicles, or similar applications. * Excellent verbal and written communication skills in English. The ideal candidate would have: * Significant experience writing software in Rust, Python, C, C++, or a similar systems language. * Experience writing code for execution in an embedded environment (microcontrollers, bare metal, RTOS, embedded OS). * Experience modeling cyber-physical systems (6 DoF Simulators, Monte Carlos, Battery Pack Models). * Strong systems design fundamentals. Experience architecting software systems (and contributing requirements to hardware design) for vehicle systems. Experience with various approaches to fault tolerance and fault mitigation. * Significant experience with software and hardware test development. Experience with unit tests, CI/CD, integration testing, data collection and management, report generation, fuzzing and other advanced automated test methods. * Experience developing software under a functional safety compliant process (for example, compliant to IEC 61508, ISO 26262, DO-178C, or similar). Strong understanding of functional safety and how to apply it to software development. Base Pay Range: * Senior Software Engineer: $155,000 —$193,000 USD. * Staff Software Engineer: $190,000 —$238,000 USD.

European Spallation Source ERIC

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. It will provide researchers with unique opportunities to explore the structure of materials at the atomic level. Neutron scattering at ESS will address critical questions in physics, chemistry, geology, materials science and life science. We are now looking for an Instrument Scientist for the HEIMDAL powder diffractometer. The position is with the Diffraction & Imaging Division. About the division The Diffraction & Imaging Division consists of the scientific staff that are leading the instrument construction projects and the staff that will eventually execute the day-to-day operations of six neutron instruments. The upcoming responsibilities of the division are Finalize the installation and commissioning of all instruments in the division Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology Deliver scientific results from the neutron instruments in collaboration with the user community and other divisions in the science directorate Plan and implement further developments and upgrades of the instruments Push the state-of-the-art capabilities of neutron instrumentation to make maximum benefit from the ESS source. Main Responsibilities HEIMDAL is a multiscale diffractometer that, in its full scope, will enable studies of functional materials across a wide range of length scales, from conventional powder diffraction to the small-angle neutron scattering (SANS) regime (possible future upgrade). The construction of the diffractometer part of the instrument is ongoing and expected to be completed in 2027. The immediate mission is to finalize the installation of the instrument and take part in the commissioning of the instrument without and with neutrons. The instrument scientist will work closely with the core instrument team at ESS, comprising another instrument scientist, an instrument computational scientist, and an instrument operational engineer, and in strong interaction with partner institutions and ESS technical services. The successful candidate must be active in a scientific field of direct relevance to HEIMDAL. Essential qualifications and experience: PhD in experimental studies in the physical sciences relevant to the HEIMDAL scientific programme, preferably in energy or nanoscaled materials. Practical experience in neutron powder diffraction Working knowledge of the data analysis for diffraction software GSAS-II, TOPAS, FullProf, Jana2006, PDFgui Evidence of an independent research profile in relevant science areas supported by a publication record Ability to work collaboratively and individually Good interpersonal communication and presentation skills, and the ability to interact effectively with staff and users at all levels. Flexibility to requests to work out-of-hours to support users Responsible attitude to personal safety and the safety of others Willingness to international travel Desirable experience: Experience with user operation at a large-scale neutron facility Experience with time-of-flight neutron powder diffraction Experience with PDF and ideally SANS measurements Practical experience in operating complex sample environments relating to neutron powder diffraction. Experience of working in an international environment is preferred and excellent oral and written English skills are prerequisites. Our work environment is characterised by fast growth, a fast pace of work, and an international atmosphere with highly skilled personnel. You must therefore enjoy the diversity of such an environment and have a personality suited for the challenges it presents. Our work environment is exciting and forward-thinking and relies heavily on personal initiative. Duration & Location The position is a 3 year fixed term role and the workplace will be situated in Lund, Sweden. Travelling is expected if the need arises. Application & Contact A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary. If you see yourself in what we're looking for, please provide your CV and motivation letter in English by clicking on "apply" and follow the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can, no later than August 16, 2026. The recruitment process will have one round of initial interviews via Zoom in end of August and beginning of September and onsite interviews at ESS in the end of September and beginning of October. Part of the onsite interview will be to hold a scientific talk (seminar) that will be open to all ESS employees. This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process. For further information regarding the position, please contact Talent Acquisition Specialist Louise Jönegård on louise.jonegardmailto:email@ess.eu or Hiring Manager Mikhail Feygenson on mailto:mikhail.feygenson@ess.eu. For trade union information, please contact Unionen representative Nuno Elias on mailto:nuno.elias@ess.eu or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at mailto:marc.kickulies@ess.eu We look forward to receiving your applications soon!

European Spallation Source ERIC

The European Spallation Source (ESS) is one of the largest science and technology infrastructure projects being built today. It will provide researchers with unique opportunities to explore the structure of materials at the atomic level. Neutron scattering at ESS will address critical questions in physics, chemistry, geology, materials science and life science. We are now looking for an Instrument Scientist for the DREAM powder diffractometer. The position is with the Diffraction & Imaging Division.   About the division  The Diffraction & Imaging Division consists of the scientific staff that are leading the instrument construction projects and the staff that will eventually execute the day-to-day operations of six neutron instruments. The upcoming responsibilities of the division are  Finalize the installation and commissioning of all instruments in the division Deliver state-of-the-art scientific capabilities for internal and external users to enable the wider science community to advance science and technology  Deliver scientific results from the neutron instruments in collaboration with the user community and other divisions in the science directorate  Plan and implement further developments and upgrades of the instruments Push the state-of-the-art capabilities of neutron instrumentation to make maximum benefit from the ESS source.     Main Responsibilities   The DREAM instrument is a neutron powder diffractometer that offers great flexibility for crystal and magnetic structure studies of ordered and disordered materials. The construction of the instrument is completed. The immediate mission is to commission the instrument with neutrons. Commissioning with neutrons is expected to begin in 2027 and continue through 2028, after which the instrument will transition into operation within the ESS user programme. The instrument scientist will work closely with the core instrument team at ESS, comprising another instrument scientist, an instrument computational scientist, and an instrument operational engineer, and in strong interaction with partner institutions and ESS technical services. The successful candidate must be active in a scientific field of direct relevance to DREAM.     Essential qualifications and experience:   PhD in experimental studies in the physical sciences relevant to the DREAM scientific programme, preferably in energy or nanoscaled materials.  Practical experience in neutron powder diffraction   Working knowledge of the data analysis for diffraction software GSAS-II, TOPAS, FullProf, Jana2006, PDFgui  Evidence of an independent research profile in relevant science areas supported by a publication record   Ability to work collaboratively and individually  Good interpersonal communication and presentation skills, and the ability to interact effectively with staff and users at all levels.  Flexibility to requests to work out-of-hours to support users  Responsible attitude to personal safety and the safety of others  Willingness to international travel      Desirable experience:  Experience with user operation at a large-scale neutron facility  Experience with time-of-flight neutron powder diffraction   Experience with pair-distribution function (PDF) measurements   Practical experience in operating complex sample environments relating to neutron powder diffraction.  Experience of working in an international environment is preferred and excellent oral and written English skills are prerequisites. Our work environment is characterised by fast growth, a fast pace of work, and an international atmosphere with highly skilled personnel. You must therefore enjoy the diversity of such an environment and have a personality suited for the challenges it presents. Our work environment is exciting and forward thinking and relies heavily on personal initiative.    Duration & Location  The position is a 3 year fixed term role and the workplace will be situated in Lund, Sweden. Travelling is expected if the need arises.    Application & Contact  A career at ESS gives you the opportunity to contribute to the future discoveries within neutron science at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe. We offer market competitive, individualised compensation which is differentiated according to role, responsibilities, individual skills, abilities and achievements as well as monthly pension contributions on top of your salary.  If you see yourself in what we’re looking for, please provide your CV and motivation letter in English by clicking on “apply” and following the instructions. Please be aware that we can only accept direct applications made via the ESS website. Submit your application as soon as you can, no later than August 16, 2026.  The recruitment process will have one round of initial interviews via Zoom in end of August and beginning of September and onsite interviews at ESS in the end of September. Part of the onsite interview will be to hold a scientific talk (seminar) that will be open to all ESS employees.   This role requires additional background screening processes and health and safety checks, which will be performed during the recruitment process.  For further information regarding the position, please contact Talent Acquisition Specialist Louise Jönegård on louise.jonegardmailto:email@ess.eu or Hiring Manager Mikhail Feygenson on mailto:mikhail.feygenson@ess.eu.    For trade union information, please contact Unionen representative Nuno Elias on mailto:nuno.elias@ess.eu or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at mailto:marc.kickulies@ess.eu   We look forward to receiving your applications soon!