RF and Optical Communications Intern

Astranis is revolutionizing satellite technology, crafting advanced satellites designed for high orbits to extend humanity's presence into outer space. Our satellites are currently providing dedicated, secure communication networks to esteemed clients worldwide, including large corporations, government entities, and the U.S. military. With five satellites al…

Astranis is at the forefront of satellite technology, constructing cutting-edge satellites for high orbits that extend humanity's capabilities into the solar system. Our satellites deliver dedicated, secure networks to a variety of sophisticated clients, including large enterprises, sovereign governments, and the US military. With five satellites successfully deployed and several more on the horizon, we are addressing a robust backlog of over $1 billion in commercial contracts.Astranis is recognized as the preferred satellite communications partner for clients with demanding requirements for uptime, data security, network visibility, and bespoke solutions. We have successfully secured over $750 million in funding from top-tier investors such as Andreessen Horowitz, Blackrock, and Fidelity, and we boast a talented workforce of 450 engineers and entrepreneurs who design, build, and operate our satellites from our expansive 153,000 sq. ft. headquarters in Northern California.RF Design EngineerIn the role of RF Design Engineer, you will take on the critical responsibility of designing, qualifying, and procuring active RF electronics (such as frequency converters, SSPAs, LNAs, PLLs, etc.) for the RF front end of our satellite payloads. Collaboration with mechanical, payload systems, electrical, and software engineering teams will be essential to meet the overall system requirements.

At Specter, we are pioneering a revolutionary software-defined control plane for the physical world. Our mission is to empower American enterprises by providing unparalleled perception over their physical assets.We are developing a cohesive hardware–software ecosystem that leverages advanced multi-modal wireless mesh sensing technology, significantly reducing the cost and time to deploy sensors by a factor of ten. Ultimately, Specter’s platform will act as the perception engine for a company’s physical footprint, facilitating real-time perimeter visibility and enabling autonomous operations management.Our co-founders, Xerxes Libsch and Philip Clark, have assembled a team of exceptional engineers from Anduril, Tesla, Uber, and the U.S. Special Forces, who are transforming the way machines perceive and interact with the physical world.The RoleWe are seeking a Lead RF Engineer to spearhead the design and development of our modular software-defined radio (SDR) architecture, which serves as the communications backbone for our distributed sensing network.In this role, you will take ownership of end-to-end RF system design, from initial concept and architecture to prototyping, validation, and deployment. This includes designing a scalable, high-bandwidth, long-range mesh communications layer that seamlessly connects thousands of edge devices into a unified sensing fabric.As the RF lead, you will define the company’s radio strategy, establish our RF lab and testing infrastructure, and build a small, elite team capable of bringing designs from benchtop prototypes to production-ready hardware.ResponsibilitiesDesign and develop Specter’s modular SDR platform, integrating multi-node mesh networking with real-time software control.Define RF system and software requirements for transceiver, front-end, and antenna subsystems.Lead system-level evaluations to identify the optimal network topology, frequency bands, and modulation schemes within software-defined constraints.Engineer and prototype analog front-end components (LNAs, PAs, filters, matching networks) with close integration to digital baseband and firmware.Create automated RF testing infrastructure and validation workflows (VNA, spectrum analyzer, OTA testing) supported by software-driven test harnesses.Collaborate with firmware, networking, and cloud teams to integrate PHY-layer and OpenWRT-based mesh protocols into the broader control plane.

Astranis is at the forefront of aerospace innovation, crafting cutting-edge satellites designed for high orbits, thereby extending humanity's capabilities into the cosmos. Our satellites deliver dedicated and secure networks to a diverse clientele that includes large corporations, government entities, and the U.S. military. With five satellites currently in orbit and several more set to launch imminently, we are addressing a robust backlog exceeding $1 billion in commercial contracts.As the go-to partner for satellite communications, Astranis caters to clients with demanding needs for uptime, data security, network visibility, and customization. Having secured over $750 million in funding from esteemed investors such as Andreessen Horowitz, Blackrock, and Fidelity, our team of 450 skilled engineers and entrepreneurs thrives in our 153,000 sq. ft. headquarters located in Northern California.Senior Mechanical Engineer - RF PackagingIn the role of Senior Mechanical Engineer for Electronics Packaging at Astranis, you will take full ownership of the lifecycle of various components and subsystems aboard our spacecraft. Collaborating with multiple teams, you will implement incremental improvements and introduce new systems to fruition.Beyond your individual contributions, you will mentor and guide junior mechanical engineers through these projects. A robust problem-solving mindset, hands-on testing capabilities, and preferably experience in spacecraft or aerospace engineering are essential for success in this role.

RF Systems EngineerJoin our client's innovative team, where we develop cutting-edge connected hardware and software systems that offer real-time insight into physical infrastructure via expansive wireless sensing networks.Our platform employs advanced multimodal wireless mesh sensing technologies, facilitating distributed perception in industrial, logistics, and operational contexts. This approach not only simplifies the deployment of sensors but also empowers organizations to efficiently monitor their assets and operations in real time.We are on the lookout for a talented RF Systems Engineer to spearhead the design and optimization of a comprehensive wireless architecture that interlinks thousands of edge devices across vast, distributed deployments.In this pivotal role, you will engage in system-level modeling, simulation, and performance validation across diverse wireless systems. You will collaborate closely with RF, firmware, and software teams to create and implement robust multi-radio architectures tailored for real-world scenarios.

Join Oura Health as an Antenna Design Engineer, where you will play a pivotal role in designing cutting-edge antenna systems for our innovative health tracking devices. You will work collaboratively with a talented team of engineers to develop, test, and refine antenna designs, ensuring optimal performance and integration into our products.

Astranis is at the forefront of space technology, developing cutting-edge satellites designed for high orbits to extend humanity’s presence within our solar system. Our satellites deliver dedicated, secure networks to a diverse clientele, including large enterprises, sovereign governments, and the US military. With five satellites already in orbit and numerous launches on the horizon, we are addressing a substantial backlog of over $1 billion in commercial contracts.Astranis is the trusted satellite communications partner for clients who demand excellence in uptime, data security, network visibility, and bespoke solutions. Having secured over $750 million in funding from prominent investors such as Andreessen Horowitz, Blackrock, and Fidelity, we are proud to employ a dynamic team of 450 engineers and entrepreneurs at our impressive 153,000 sq. ft. headquarters in Northern California.RF/Communication Systems EngineerIn this role, you will take charge of the architecture, design, and modeling of our satellite communication payloads. Collaboration will be key as you work alongside teams including antenna, SDR, RF, DSP, and mechanical engineers to develop optimal radio systems.Conduct architectural trade studies and analytically or via simulation define system and unit-level requirements.Lead R&D initiatives for innovative radio features, technologies, and custom components.Engage with multiple design teams, including RF, antenna, digital hardware, FPGA, mechanical, and thermal.Design and test communications-related signal processing algorithms.Support recruitment efforts by interviewing and onboarding new team members to our rapidly expanding team.

Astranis is revolutionizing satellite communication by designing and deploying cutting-edge satellites for high orbits, thereby enhancing humanity’s exploration of the solar system. Our state-of-the-art satellites deliver dedicated, secure networks to a diverse clientele, including major enterprises, government entities, and the US military. With five satellites in orbit and a robust pipeline of future launches, we are addressing over $1 billion in commercial contracts.As the preferred partner for satellite communications, Astranis meets the rigorous demands for uptime, data security, network visibility, and customization. Backed by over $750 million from esteemed investors such as Andreessen Horowitz, Blackrock, and Fidelity, our dynamic team of 450 engineers and entrepreneurs operates from our expansive 153,000 sq. ft. headquarters in Northern California.As an RF Systems Engineer, you will be pivotal in shaping our RF systems roadmap, evaluating trade-offs, incubating new technologies, and managing RF sub-systems budgets and requirements. You will model payload and TT&C systems for both commercial and USG satellites, taking ownership of your projects while collaborating across teams to innovate and advance satellite technology.

Supported by top-tier investors from Silicon Valley, Peregrine Technologies is at the forefront of assisting public safety organizations, local and state governments, federal agencies, and private sector entities in tackling societal challenges with unmatched speed and precision. Our AI-driven platform transforms fragmented and isolated data into actionable insights, providing immediate access to critical information that enables timely and informed decisions, ultimately enhancing outcomes at every interaction. Currently, Peregrine serves hundreds of clients across more than 30 states and two countries, impacting over 125 million individuals. We are poised for significant growth as we extend our services into the enterprise sector and international markets.RoleAs a pivotal member of our dynamic team of inquisitive and empathetic designers, you will play a crucial role in simplifying complex, data-rich workflows into engaging user experiences. Your creativity and meticulous attention to detail will be integral in every facet of product development.As one of our initial design engineers, your contributions will help define the future of data interaction and insights within our most critical institutions. You will have the autonomy to lead design-focused initiatives while collaborating closely with a talented group of designers and engineers to shape the Peregrine product and deliver essential software to frontline workers.About YouProven experience in crafting sophisticated yet enjoyable user interactions.Strong background in developing diverse layouts and visuals utilizing markup and styles.Capability to create dynamic interactions with springs and sequences.Innovative thinker focused on enhancing the quality and refinement of all product dimensions through strategic solutions.Skilled in articulating compelling narratives, effectively aligning team vision with shared objectives.Curiosity and eagerness to learn from and evolve with a team of seasoned professionals.Passionate about nurturing the design culture and methodologies within the organization.What We Look For4+ years of experience collaborating with cross-functional software development teams.Robust technical skills in React, JavaScript, HTML, and CSS.Expertise in managing and executing various factors, including user requirements, product objectives, and design intricacies.Able to thrive in a collaborative, iterative, and multi-disciplinary environment with design, engineering, and business development teams.

About Fellow At Fellow, we are dedicated to transforming the coffee brewing experience at home. Our beautifully designed kettles and grinders are just the beginning; we are a brand rooted in innovation, community, and culture. For us, great coffee is not just about the final cup—it’s about the entire experience, the rituals, and the passionate individuals that contribute to it. This position is based in our San Francisco office and requires in-office presence 4 days a week. Candidates must be available for regular evening calls with teams and partners in Asia, as well as occasional travel (once to twice per quarter) to these locations. Who You Are As a Senior Product Design Engineer, Electrics (Lead), you will be instrumental in spearheading product engineering and design initiatives for our expanding range of home appliances, including precision coffee makers, grinders, and kettles. You will engage in hands-on design work, including CAD ownership, analysis, simulations, calculations, and testing. Your role will involve driving the design, development, and refinement of hardware products from concept through production, ensuring they meet exceptional standards of functionality, user experience, and design aesthetics. You will collaborate closely with cross-functional teams, including industrial design, electrical engineering, software development, operations, vendors, and manufacturing partners, to deliver outstanding products. As a design lead, you will guide external partners, mentor fellow engineers, lead design reviews, and serve as a technical partner to our Technical Project Managers. What You’ll Do Lead Product Design Process: Take hands-on ownership of product design and development tasks, including CAD, analysis, characterization, testing, and prototyping, leading efforts from preproduction to mass production. Collaborate with industrial design, engineering, and operations teams to ensure products meet quality, cost, and timeline objectives. Oversee the comprehensive design and development of consumer hardware products, focusing on connected home appliances like coffee makers, kettles, and grinders. Create detailed 3D models, CAD designs, and engineering drawings. Conduct sensor and system characterization. Perform calculations related to fluid mechanics and heat transfer. Make material selections for complex applications. Support robust testing and validation of products.

Join Oura Health as a Senior Product Design Engineer and play a vital role in shaping the future of health technology. In this position, you will collaborate with cross-functional teams to design innovative product solutions that enhance user experience. Your expertise will be instrumental in driving design processes from concept through execution, ensuring our products are not only functional but also aesthetically pleasing and intuitive.

Embrace the Sleep Fitness RevolutionAt Eight Sleep, we are dedicated to unlocking human potential through optimal sleep solutions. As the premier sleep fitness company globally, we are reshaping the understanding of restorative rest, developing cutting-edge hardware, software, and AI technologies to revolutionize sleep. Our innovative products enhance mental, physical, and emotional performance by converting each night into a customized, data-informed recovery experience. Trusted by elite athletes and health-conscious individuals across more than 30 countries, Eight Sleep has been honored as one of Fast Company's Most Innovative Companies in 2019, 2022, and 2023, as well as earning recognition in TIME's 'Best Inventions of the Year' twice. We function as a high-performance team: driven, agile, and focused on impact. Our commitment goes beyond simply delivering products; we continuously iterate, refine, and obsess over the nuances that enable our users to sleep better and wake up revitalized.Every position at Eight Sleep offers an opportunity to contribute to groundbreaking technology, collaborate with exceptional talent, and help shape a future where sleep becomes an active tool for improving life quality. If you are seeking to break free from the mundane and are eager to innovate at the forefront of possibility, this is your moment. Join us and lead the change that is redefining sleep and expanding human capabilities upon waking.Unwavering Standards. Relentless Pursuit.Our mission drives us to operate with intensity. At Eight Sleep, we embody the mentality of the world's top achievers: focused, tenacious, and constantly striving to be in the elite 1% of our field. Think of the Mamba Mentality, applied to bold concepts, next-generation technology, and impeccable execution. This is not a typical 9-to-5. Our team is deeply engaged, often committing over 60 hours a week—not out of obligation, but because of our investment in our mission. We are here to innovate rapidly, challenge boundaries, and deliver uncompromising results. If you excel under pressure and wish to undertake the most significant work of your career, you will thrive here. If you're seeking something less demanding—this is not the place for you. Your RoleWe are in search of a seasoned Senior Mechanical Engineer to guide product development from initial concept to production. You will be a key member of a small, mission-centric team with significant influence over decision-making. As we grow rapidly, numerous opportunities for career advancement await.This position is based in our San Francisco office 5 days a week.

About Astro Mechanica Astro Mechanica is an aerospace company based in San Francisco, focused on making high-speed flight more accessible, sustainable, and adaptable. The team develops advanced airframe and propulsion technologies, including the proprietary Duality™ system, to support rapid, on-demand global mobility. Current projects center on building flexible, high-speed systems that improve aircraft performance for the U.S. government. Our Team and Culture Engineers at Astro Mechanica work collaboratively in a flat organizational structure that values expertise and hands-on problem solving. The team blends broad technical knowledge with deep specialization, prioritizing engineering quality and pragmatic solutions over hierarchy. Innovation and a shared drive to advance aerospace technology define the workplace. Role Overview: Senior Transmission Design Engineer The Senior Transmission Design Engineer will play a central role in designing and validating high-speed power transmission systems for turboelectric adaptive jet engines. This position requires a strong grasp of complex system dynamics and a willingness to take full ownership of transmission design from concept through rigorous testing. Key Responsibilities Architect, analyze, and build high-speed power transmission systems for electric propulsion applications Lead validation efforts, including thorough ground testing of transmission hardware Collaborate closely with propulsion, aircraft, and testing teams to deliver optimized solutions for flight vehicles Address complex, interconnected engineering challenges with careful attention to detail and strong problem-solving skills Impact Work in this role will directly shape the configuration and performance of Astro Mechanica’s next-generation propulsion systems, supporting the company’s mission to redefine supersonic and economical air travel.

ABOUT US:At Astro Mechanica, we are revolutionizing aerospace with a mission to make high-speed flight accessible, flexible, and sustainable. Our innovative approach integrates cutting-edge airframe and engine technologies, including our proprietary Duality™ propulsion system, to pave the way for efficient supersonic travel. We envision a future where on-demand, point-to-point global mobility becomes the norm for transporting people and goods. Currently, we are developing adaptable high-speed systems to enhance aircraft performance for the U.S. government.WHO WE ARE:Our team is comprised of passionate engineers committed to pushing the boundaries of aerospace technology. We embrace a culture of collaboration and innovation, focusing on practical solutions that prioritize engineering excellence over hierarchy. Join us in our fast-paced, dynamic environment where your contributions can make a significant impact.WHO YOU ARE:We are looking for a motivated Structures Engineer to become a vital part of our team. The ideal candidate possesses a solid understanding of structural design principles and is driven by a desire to tackle complex aerospace challenges. You are eager to apply your engineering knowledge and early career experience to tangible aircraft components while learning from a diverse group of seasoned engineers. In this role, you will be instrumental in designing, analyzing, and testing advanced aerospace structures that enhance the performance and safety of our aircraft.WHAT YOU’LL DO:Assist in the design and analysis of composite and metallic structures for high-performance aircraft.Support the development of structural layouts and configurations under the guidance of senior engineers.Execute CAD modeling, create drawings, and perform basic structural analysis (including hand calculations and FEA).Participate in trade studies to balance performance, weight, cost, and manufacturability.Collaborate with cross-functional teams (aero, propulsion, manufacturing, and testing) to establish and support structural requirements.Engage in design reviews, provide manufacturing support, and participate in testing activities.Document your work meticulously and maintain configuration control over designs and models.Learn from senior engineers to continually advance your technical expertise.

At Ello, our mission is both compelling and urgent: to maximize the potential of every child, everywhere.We are pioneering the world’s first AI teacher, designed to bridge educational gaps by listening, speaking, adapting, and inspiring in the same way that exceptional human educators do.Our inaugural product, Read with Ello, is already making a significant impact, helping tens of thousands of children each week to learn to read. It listens attentively as they read aloud, provides assistance when they encounter challenges, and crafts personalized, enchanting stories through generative AI. The results speak for themselves—children love it!We are now scaling our success to create something even more transformative: a comprehensive AI teacher for all children. Our goal is to develop a real-time learning platform that integrates language, speech, and memory, delivering personalized, interactive education to children across the globe. We are a fast-paced team, shipping weekly, testing directly with children and families, and continuously pushing the boundaries of AI in education.With the backing of top-tier investors and the heart of a public benefit corporation, we are on a mission to revolutionize global education. Featured in TIME’s Best Inventions and Fortune’s Change the World, Ello is a small, mission-driven team committed to addressing one of the most critical challenges of our time: democratizing education.Join Our TeamAs a rapidly growing Series A startup, Ello is reshaping the way children learn and engage with technology. In this role, you will collaborate directly with Ello’s Co-founder & CTO, Catalin Voss, as part of a close-knit team of fewer than 10 engineers, learning designers, and product managers to innovate new products. You will be surrounded by top-tier engineers and will collaborate with leading experts in machine learning to bring models to production and create new product experiences. Our team values face-to-face collaboration and works primarily in our San Francisco office.Role OverviewWe are seeking a talented Senior Design Engineer, New Products who will take ownership of developing learning activities for Ello’s next-generation AI tutoring applications. You will serve as a bridge between product development and engineering, overseeing features from inception to playtesting. At times, you will function as your own product manager, while at other times you will work closely with our product team. As part of a small team, you will help bring Ello’s tutoring AI to life through agent control, character development, and interactive game features. Your attention to detail and passion for creating delightful user experiences will be key to your success.

Join Discord, a vibrant platform that connects over 200 million users monthly, primarily through gaming. More than 90% of our users engage in gaming, contributing to an astounding 1.5 billion hours spent playing diverse titles each month. At Discord, we are committed to enhancing the gaming experience by fostering fun and engaging conversations among players before, during, and after gameplay.The Design Systems team is a dynamic, cross-functional unit dedicated to ensuring top-notch design quality across every aspect of user interface, content, and graphics. We create fundamental design elements and standards that empower engineers and designers in the development of Discord’s products. Our collaborative efforts accelerate the delivery of new features that are not only accessible and consistent but also of the highest quality. Additionally, we set the accessibility benchmarks for Discord and assist other engineering teams in meeting these standards. This pivotal role directly supports Discord's mission of creating an inclusive community where everyone can find their place.

Join Chime as a Senior Frontend Engineer specializing in Design Systems! In this pivotal role, you will lead the development of scalable and user-friendly design components that enhance our product offerings. Collaborate with cross-functional teams to create seamless user experiences and design solutions that meet the needs of our growing customer base.

Join Interaction, a cutting-edge company in the heart of California, as we seek talented design engineers to enhance our innovative team. We are dedicated to finding exceptional individuals who share our passion for technology and design.We invite you to apply if you:Have a strong passion for technology and design, backed by well-informed opinions.Can engage in thoughtful discussions about various tools and applications like Arc, Roam, Tana, Hey.com, Things, Cron, Raycast, and more.Possess expertise in frameworks such as Next.js, React, and SwiftUI.

Astranis is at the forefront of satellite technology, crafting advanced satellites that push the boundaries of what is possible in high orbits. Our satellites are designed to deliver dedicated and secure networks to a diverse clientele, including large enterprises, sovereign governments, and the US military. With five satellites successfully launched and several more slated for launch, we are proud to support a robust backlog exceeding $1 billion in commercial contracts.As the trusted partner for satellite communications, Astranis is committed to meeting the stringent requirements for uptime, data security, network visibility, and customization from our clients. We have successfully raised over $750 million from prestigious investors, including Andreessen Horowitz, Blackrock, and Fidelity. Our dedicated team of 450 engineers and entrepreneurs operates from our state-of-the-art 153,000 sq. ft. headquarters in Northern California, USA.Electrical Integration Intern - RF (Fall 2026)This internship opportunity at Astranis spans twelve weeks and is designed for students currently enrolled in a four-year university program.As an intern, you'll engage in exciting and challenging projects, contributing to meaningful work that can impact the future of space technology. Past interns have successfully designed and tested hardware and software that are now heading to space, with many transitioning into full-time roles at Astranis after their internships.If you have graduated from a four-year university, we encourage you to apply for the position of Electrical Integration - RF Associate.RoleCollaborate with an interdisciplinary team to design, build, and test satellite hardware and software.Partner with Electrical, Mechanical, Radio Frequency, and Propulsion engineering teams to develop assembly and integration test plans and procedures based on innovative concepts and designs.Gain experience in using various testing equipment and instruments (thermal chambers, vibration tables, DAQs, oscilloscopes, etc.) to effectively execute test plans.Coordinate assembly, integration, and environmental test initiatives.Tackle complex electrical, software, and mechanical challenges within an integrated system.RequirementsCurrently pursuing a four-year degree in Electrical Engineering, Computer Science, or a related technical field, or have graduated within the last six months or are enrolled in a post-graduate program.A strong enthusiasm for hardware development and a keen interest in satellite technology.