About the Position

We are looking to hire an Engineer with experience in both software and hardware design to help us build our FPGA-based applications. 

We're big believers in the ability of tools to make programming faster, more pleasant, and more reliable. We apply these same principles to our FPGA Engineering work, and we’re looking for people who are interested in using programming language technology to improve the process of designing, testing, and validating hardware designs. We use Hardcaml, an OCaml library for succinctly describing hardware in RTL. Hardcaml is tightly integrated into our development environment, so you’ll also gain lots of exposure to the libraries and tools that are foundational to our internal systems. No previous knowledge of Hardcaml is required.

In this role, you’ll work on the ground-up design and implementation of new FPGA applications, and help extend and refine the high-level design and testing tools that we use internally. Your day-to-day work will predominantly involve OCaml & Hardcaml, for both RTL design and testing/integration, but you can also expect to work with some Verilog and C. While you don’t need to have worked with OCaml specifically, a good background in typed programming languages is a plus.

If you’d like to learn more, you can read about our interview process, meet some of our newest hires, or check out our OCaml All The Way Down talk and Programmable Hardware podcast episode.

About You

We don’t expect you to have a background in OCaml, finance, or any other specific field—we’re looking for smart programmers who will approach hardware design with a software engineering mindset. We’re more interested in how you think and learn than what you currently know. You should be:

• A top-notch programmer with a love for technology
• Comfortable with a software programming language
• Intellectually curious, collaborative, and eager to learn
• Humble and unafraid to ask questions and admit mistakes
• Experienced with a Hardware Description (or Construction) language (VHDL, Verilog, Chisel, Pymtl, or other), for both writing and testing hardware designs
• Experienced working with FPGA vendor tools (Vivado or Quartus)
• Experienced with building a working FPGA project through an academic, professional, or personal project
• Interested in learning how to use FPGAs in the context of networking
• Fluent in English

If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.

We are looking for a Spacecraft Software Engineer (GNSS) to join our team working at the intersection of satellite payloads, scientific computing, and data delivery systems. In this role, you'll be responsible for developing and maintaining both the flight and ground software that powers our satellite-based GNSS missions. You’ll work across system layers—from embedded software to cloud data pipelines—to help ensure the accurate and timely delivery of mission-critical scientific data to our customers.   

This is a high-impact role where autonomy, creativity, and technical breadth are key.   

What You'll Do as a Senior Software Engineer:

• Develop and maintain scientific and command & control software for GNSS-based satellite payloads using a variety of software stacks.   

• Build and operate ground-based automation systems for efficient data extraction, transformation, and delivery from the satellite to end users.   

• Collaborate closely with flight operations to troubleshoot and ensure consistent, high-quality data delivery.   

• Engage with other system engineers, payload developers, and mission operators to continuously evolve the software in support of scientific objectives.   
• Participate in code reviews, testing, and documentation to uphold software reliability and traceability.   

Who You Are (Required Qualifications):

We're looking for someone with at least 5 of the following qualifications:   

• Proficient in at least one of C++ or Python, and capable of picking up new tools and languages as needed.   

• Experience in FPGA development (VHDL or HLS) for signal processing or control systems.   

• Solid background in DSP techniques and theory, especially in the context of RF or GNSS.   

• Familiarity with GNSS signal processing and/or scientific applications such as GNSS-RO, GNSS-R, or PNT algorithms.   

• Skilled in cloud-based systems (e.g., AWS), backend development, and managing data via scalable storage/database solutions.   

• A lifelong learner—curious, adaptable, and open to new challenges outside your immediate expertise.   

• Demonstrates strong work ethics and a focus on impactful contributions to the mission and team.   

• Capable of independently navigating technical challenges and making forward progress without constant direction.   

Preferred Skills:

• Prior experience working on satellite payloads or in the aerospace domain.   

• Experience building telemetry and data visualization tools.   

• Contribution to open-source scientific or aerospace-related software projects. 

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-RK1