Senior Backend Engineer - Customer Engineering

About Logos Space Logos Space is building a proliferated Low Earth Orbit (pLEO) constellation to deliver high-performance connectivity for enterprise and government clients worldwide. The Navigation team designs and builds the software and infrastructure that support spacecraft timing, astrodynamics, orbit determination, and other navigation functions used in both flight and ground systems. Role Overview This GNSS Navigation Engineer - Orbit Determination Specialist position focuses on developing GNSS software that converts raw data into accurate navigation products for use in both onboard and ground-based systems. The work includes designing, implementing, and validating key GNSS measurement-processing features essential for the operation of the LEO constellation. Responsibilities cover building core GNSS software for onboard data ingestion, ground-based orbit determination, and supporting analysis and validation tools. Depending on experience, the role may involve leading or contributing to specific areas of the GNSS stack, such as observation modeling, correction ingestion, quality screening, residual analysis, replay, and estimator integration diagnostics. The team values engineers who are comfortable in a fast-moving setting, can turn ambiguous requirements into working software, and enjoy collaborating across disciplines. Main Responsibilities Develop and maintain proprietary C++ libraries for GNSS measurement processing, estimator integration, and navigation workflows. Create Python tools or bindings for analysis, testing, automation, and rapid debugging. Implement and validate observation models and preprocessing for code, carrier phase, Doppler, and timing or clock-related measurements. Develop interfaces for receiver telemetry and external navigation products, including broadcast and precise ephemerides, clocks, biases, atmospheric data, and correction information. Perform data quality screening, timestamp validation, cycle-slip detection, outlier rejection, residual analysis, and diagnostics. Contribute to EKF-based orbit determination and state-estimation pipelines by providing estimator-ready measurements, measurement models, noise models, and health metrics. Analyze innovations, residuals, covariance behavior, and consistency metrics. Location Mountain View or San Diego

About Logos Space Logos Space builds a proliferated Low Earth Orbit (pLEO) satellite constellation to deliver resilient, high-performance communications for enterprise and government customers worldwide. The Navigation team develops the software and infrastructure that enable precise spacecraft timing, astrodynamics, orbit determination, and navigation workflows supporting both flight and ground operations. Role Overview The Navigation Engineer for State Estimation and Orbit Determination will design, implement, and validate software that determines the position and trajectory of satellites in the constellation. This work is central to maintaining reliable constellation operations. The role covers both onboard real-time estimation and ground-based orbit determination, as well as supporting tools for analysis and validation. Depending on experience, responsibilities may include ownership of specific segments of the estimation stack or contributing to broader development efforts. Areas of focus include process and measurement modeling, filter design, validation, covariance analysis, estimator integrity, statistical validation, replay, and regression infrastructure. This position is based in Mountain View or San Diego. What You Will Do Develop and maintain proprietary C++ libraries for state estimation, orbit determination, and navigation workflows. Create Python tools or bindings to support analysis, testing, automation, and efficient debugging. Implement and validate models for processes and measurements, filtering and smoothing algorithms, covariance propagation, initialization, gating, and related numerical utilities. Integrate data from GNSS, timing sources, maneuvers, telemetry, and external tracking inputs. Build simulation, replay, Monte Carlo, and regression tools to evaluate estimator performance and detect numerical or integration regressions. Assess estimator behavior for consistency, convergence, observability, initialization, and performance under off-nominal scenarios. Work closely with engineers across flight software, GNSS, astrodynamics, timing, and mission operations to define and implement system interfaces.

Logos Space is an innovative Low Earth Orbit (LEO) satellite system meticulously designed to meet the connectivity demands of commercial enterprises and government entities. We aim to bridge a crucial gap in the market by delivering resilient, high-performance satellite-based connectivity solutions to clients globally. Our business customers benefit from contracts with established performance benchmarks for their broadband needs, and we are committed to integrating these capabilities into our system from the outset. The foundation of our system is built on speed and reliability, ensuring that Logos can extend cloud and data center network connectivity to fixed, maritime, and aerial terminals around the world.Our team at Logos is comprised of highly skilled engineers with extensive backgrounds in networking and satellite technologies, ensuring that we push the boundaries of what's possible in satellite connectivity.Position OverviewIn the role of Precise Orbit Determination Engineer, you will spearhead the architecture and software development for the ground-based orbit estimation service within the Logos Space satellite network. Your responsibilities will include processing a variety of tracking data, such as GNSS observations and ground station ranges, to accurately reconstruct and forecast satellite ephemerides. This critical work facilitates the seamless scheduling of operations and maintenance across the Logos Space constellations.Key ResponsibilitiesEstimation Architecture: Architect and sustain the ground-based Orbit Determination (OD) pipeline utilizing Extended Kalman Filtering (EKF), Least Squares, or comparable batch estimation frameworks.High-Fidelity Modeling: Develop and implement advanced force models including high-degree gravity fields, solar radiation pressure, atmospheric drag, and third-body perturbations to achieve superior prediction accuracy, along with clock parameter estimation.Data Fusion: Create algorithms to integrate and fuse GPS/GNSS and similar PNT source telemetry with ground-based ranging data, producing robust and precise satellite ephemeris estimates.Calibration & Validation: Regularly perform cross-calibration analyses between ground-truth POD and onboard navigation systems to ensure consistency across the fleet.QualificationsEducation: MS or PhD in Aerospace Engineering, Geomatics, or Physics, specializing in Estimation Theory or Astrodynamics.Experience: A minimum of 5 years of experience in orbit determination for LEO satellites.

About Logos Space Logos Space is building a proliferated Low Earth Orbit (pLEO) satellite constellation to deliver reliable, high-performance connectivity for enterprise and government clients worldwide. The Navigation team designs and develops the software and infrastructure that underpin spacecraft timing, astrodynamics, orbit determination, and navigation workflows for both flight and ground systems. Role Overview The Astrodynamics Navigation Engineer will help establish the framework for state estimation, trajectory propagation, maneuver planning, and operational decisions that support navigation across Logos Space's flight and ground operations. This work is central to the successful operation of the pLEO satellite constellation. What You Will Do Design, implement, and validate core astrodynamics software for flight and ground systems Develop shared tools and infrastructure that support analytics, validation, and operational workflows Contribute to or own components such as time systems, reference frames, force modeling, numerical propagation, event detection, maneuver modeling, ephemeris generation, and validation infrastructure, depending on experience Work with cross-functional teams to turn incomplete specifications into reliable software solutions Who Thrives Here Engineers comfortable with ambiguity and iterative problem-solving Collaborators who communicate well across disciplines Location This role is based in Mountain View or San Diego.

At Reliable Robotics, we are pioneering advanced safety technologies for aviation, with the mission of saving lives. Our automated aviation systems aim to revolutionize air transportation, making it safer and more accessible for the movement of goods and eventually people worldwide. Our team consists of dedicated engineers with extensive experience in aerospace, robotics, and autonomous vehicles, all working together to bring this vision to life.As a Flight Navigation Engineer, you will play a pivotal role in our Guidance, Navigation, and Control Team. Your contributions will shape the design, implementation, and testing of navigation systems, facilitating the integration of uncrewed aircraft into the National Airspace System.

Join Waymo as a Senior Software Engineer specializing in Inertial Navigation. In this role, you will play a crucial part in developing cutting-edge navigational algorithms that will enhance our autonomous vehicle systems. Your expertise will help us push the boundaries of technology and redefine transportation.

About Logos Space Logos Space is building a proliferated Low Earth Orbit (pLEO) constellation to deliver high-performance connectivity for enterprise and government clients worldwide. The Navigation team leads the development of software and infrastructure for spacecraft timing, astrodynamics, orbit determination, and other navigation workflows that support both flight and ground systems. Role Overview The Spacecraft Timing System Engineer will join the Navigation team to design, implement, and validate timing systems that enable nanosecond-class onboard accuracy. This role focuses on creating reliable onboard time, improving calibration and observability, and providing dependable timing interfaces for flight and payload systems. The work spans timing and synchronization, FPGA and embedded systems, digital hardware, calibration, and validation. Depending on experience, the engineer will contribute to or independently manage parts of the timing stack, such as timing measurement and timestamping, clock control and steering, timing distribution, monitoring and telemetry, calibration workflows, and validation automation infrastructure. Success in this position requires the ability to turn partial requirements into actionable software and to collaborate across disciplines. Key Responsibilities Develop and maintain FPGA/RTL, embedded logic, and supporting software for spacecraft timing and synchronization. Design and implement timing system features, including measurement, timestamping, clock control, timing distribution, calibration, telemetry, and monitoring. Establish and implement hardware/software interfaces: registers, configurations, telemetry, fault and status signaling, and testing hooks. Work with electrical, embedded, GNSS, signal processing, flight software, and integration engineers on timing-system architecture, requirements, partitioning, and trade studies. Build simulation, testbench, replay, lab validation, and automation infrastructure to verify correctness, stability, and timing performance. Characterize timing performance metrics such as accuracy, stability, jitter, phase alignment, latency, deterministic behavior, holdover, reacquisition, and calibration drift. Location This position is based in Mountain View or San Diego.

Reliable Robotics develops automated aviation systems to improve safety and accessibility in air transportation. The team includes engineers from aerospace, robotics, and autonomous vehicle backgrounds, all working to advance aviation technology and make air travel more dependable. Role overview The Senior Guidance, Navigation, and Control (GNC) Modeling Engineer focuses on creating and improving physics-based models that underpin both rapid design changes and certification-level validation of GNC software. This role plays a key part in ensuring the accuracy and reliability of automated flight systems. What you will do Develop and refine physics-based models to support GNC software Run simulation analyses to test and validate GNC algorithms Compare simulation outputs with real-world data to verify model accuracy Contribute to iterative design and certification processes with high-fidelity modeling Location This position is located in Mountain View, CA.

Join our dedicated team as a Pet Nutrition Specialist. In this part-time role, you will leverage your passion for pet health and nutrition to support pet owners in making informed dietary choices for their beloved companions. You will engage with customers, provide expert advice, and showcase our premium range of pet nutrition products.

As an Inventory Specialist at tsmg, you will play a pivotal role in supporting our device management system, collaborating closely with our partner teams and stakeholders. Your primary responsibility will be to manage the lifecycle of testing and procurement devices sourced from our hardware depots. This includes overseeing procurement processes, handling requests, managing tickets, and coordinating delivery and shipment logistics to ensure efficiency and accuracy.

Role Overview:Join our dynamic team at tsmg as an Operations Support Specialist. In this engaging role, you will leverage both hardware and software tools to effectively collect, process, and manage operational data. We are looking for a proactive individual with exceptional organizational and communication skills, who thrives in fast-paced environments and is eager to adapt to new challenges.

Join our dynamic team as a Pet Nutrition Specialist where you will play a vital role in promoting the health and well-being of pets. You will be responsible for educating pet owners on the importance of nutrition and providing tailored recommendations based on individual pet needs.This position offers the opportunity to work closely with pet owners and their furry companions, ensuring they receive the best nutritional advice and products available in the market.

Project Overview:Join our innovative team at tsmg, where we are committed to delivering cutting-edge interactive panoramas from street-level vantage points globally. This role involves the crucial tasks of building, testing, deploying, and maintaining the advanced imagery hardware and sensors utilized across various platforms.Position Summary:As the Lead NORAM Logistics Specialist, you will play a pivotal role in overseeing equipment logistics, encompassing both domestic and international movements throughout their lifecycles. You will ensure strict adherence to country-specific regulations and engage in effective collaboration with 3PL partners such as FedEx and Expeditors. Your responsibilities will also include supporting inventory management, conducting scheduled stock counts, and providing accurate forecasts.

Cranial Technologies specializes in the research and treatment of plagiocephaly, commonly called flat head syndrome. With over 300,000 infants treated using pediatric cranial shaping orthoses, the company has become a recognized leader in this area. In addition to cranial care, Cranial Technologies offers the EarWell® system, a non-surgical approach for correcting infant ear shapes. This method has resulted in more than 600,000 successful outcomes, providing families with a trusted, non-invasive solution. Families rely on Cranial Technologies for attentive care, strong results with the DOC Band® and EarWell®, and ongoing support for babies and caregivers. Role overview This full-time, hourly position is based in Mountain View, California. As a Baby Imaging Specialist, the role involves working directly with infants and their families, assisting the clinical team, and helping ensure a positive experience throughout each stage of treatment. What you will bring Warm, attentive customer service skills Comfort using technology and imaging equipment A genuine love for working with babies Many Baby Imaging Specialists have backgrounds in childcare (such as daycare or nanny roles), education (including teaching or preschool), or high-end retail. These experiences often translate well to the supportive and hands-on nature of the position.

Waymo is at the forefront of autonomous driving technology, dedicated to becoming the world's most trusted driver. Originating from the Google Self-Driving Car Project in 2009, Waymo has dedicated its efforts to developing the Waymo Driver—The World's Most Experienced Driver™—aimed at enhancing mobility access and significantly reducing traffic-related fatalities. The Waymo Driver powers our fully autonomous ride-hail service and has been integrated into various vehicle platforms and use cases. With over ten million rider-only trips completed and more than 100 million miles driven autonomously on public roads, our technology has undergone extensive real-world and simulated testing across over 15 states in the U.S.Our Hardware Engineering team is a vibrant, innovative, and collaborative assembly of electrical, mechanical, reliability, software, and vehicle engineers. We design, build, and refine the products that serve as the sensory foundation of Waymo's autonomous driving technology and seamlessly integrate them into vehicle platforms. We are on the lookout for inquisitive and talented individuals to join our team and propel our mission forward.This hybrid role will report directly to a Vehicle Engineering Leader.

We are seeking a highly skilled Senior IT Operations Specialist who is fluent in Korean to join our dynamic team at sbtglobalinc. This role is crucial in ensuring the seamless operation of our IT infrastructure and supporting our global initiatives. The ideal candidate will possess a blend of technical expertise and strong communication skills to effectively collaborate with international teams.

Waymo is pioneering the future of autonomous driving technology, striving to become the most trusted driver globally. Originating as the Google Self-Driving Car Project in 2009, our focus has been on developing the Waymo Driver—The World’s Most Experienced Driver™—to enhance mobility access and save lives lost in traffic incidents. With over ten million rider-only trips accomplished through autonomous driving across 100 million miles on public roads and extensive simulation, we are redefining transportation across 15+ U.S. states.The Software Quality Operations (SWQOps) team plays a pivotal role in ensuring the safety, reliability, and quality of the Waymo Driver. Our mission is to create an adaptable and scalable operation, significantly powered by AI, to provide the critical insights necessary for the confident deployment and growth of Waymo’s autonomous vehicle service.As Waymo expands into approximately 20 new cities by the end of 2026, the SWQOps team is vital to this growth. The Scenario Operations team is responsible for delivering and maintaining simulation-based directed testing coverage that evaluates the safety and performance of our driver. As a Technical Specialist in Scenario Operations, you will act as the Subject Matter Expert, bridging the gap between our simulation software capabilities and real-world operational execution.Key Responsibilities:Tooling Development & Optimization: Collaborate with Product and Engineering teams to design, test, and deploy state-of-the-art simulation tools that effectively merge human-in-the-loop (HITL) precision with AI-driven automation, ensuring scalable test coverage.Rapid Issue Response: Lead the technical processes for rapid-response simulation-based scenario testing. When issues arise in the field, leverage your comprehensive understanding of the A/V software stack and our tooling to facilitate root-cause analysis and fix validation.Policy Development: Act as the essential link between AI/ML development and operational execution, ensuring alignment and efficiency.

Gavin de Becker & Associates seeks a Security Specialist for its Mountain View, CA location. The company welcomes veterans, recognizing the unique skills and insights developed through military service. This role centers on safeguarding both individuals and organizations from a range of threats. Key Responsibilities Assess risks to identify areas of vulnerability for clients. Develop and apply security measures tailored to each situation. Engage directly with clients to promote their safety and peace of mind. Who Will Succeed This position is a strong fit for those with experience in security, law enforcement, or military service. Veterans are especially encouraged to apply, as their backgrounds align closely with the firm’s mission and values.

Be Part of the Revolution in Home RoboticsAt sunday, we are pioneering the development of personal robots designed to help you reclaim valuable time lost to mundane tasks. Our ambitious mission is to make versatile robots accessible to everyone, allowing households to enjoy more quality moments together.After 18 months of assembling a skilled team, securing funding, and validating our innovative technology, we are in search of dedicated individuals to join us in this exciting phase of growth. If you're eager to leverage your skills at the cutting edge of robotics, we want to hear from you!Your RoleAs an Infrastructure & Release Engineer, you will take ownership of the