Full Stack Developer

Sonsoft Inc.Sunnyvale

On-site Full-time

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Experience Level

Mid to Senior

Qualifications

Strong proficiency in JavaScript, HTML, CSS, and frameworks such as React or Angular. Experience with server-side languages such as Node.js, Python, or Java. Familiarity with database technologies like MySQL, PostgreSQL, or MongoDB. Knowledge of version control systems, preferably Git. Excellent problem-solving skills and a passion for developing innovative solutions. Bachelor's degree in Computer Science or a related field is preferred.

About the job

Join our dynamic team at Sonsoft Inc. as a Full Stack Developer. In this pivotal role, you will be responsible for designing and implementing responsive web applications while collaborating with cross-functional teams to deliver high-quality software solutions. Your expertise in both front-end and back-end technologies will be essential in creating user-friendly interfaces and robust server-side applications.

About Sonsoft Inc.

Sonsoft Inc. is a leading technology firm specializing in delivering cutting-edge software solutions. We pride ourselves on our collaborative work environment and commitment to innovation. Join us to be part of a company that values creativity, diversity, and professional growth.

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Senior Full Stack Software Engineer (FedRAMP) at Ceribell | Sunnyvale, CA

Ceribell

Full-time|$120K/yr - $190K/yr|On-site|Sunnyvale, CA

About CeribellCeribell is an innovative medical technology firm dedicated to revolutionizing the diagnosis and management of severe neurological disorders. Our flagship product, the Ceribell System, is a pioneering point-of-care electroencephalography (EEG) platform tailored to meet the critical needs of patients in acute care environments. Widely utilized i…

Feb 20, 2026

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Contracts Manager at Ceribell | Sunnyvale, CA

Ceribell

Full-time|Remote|Sunnyvale, CA, Remote

About CeribellCeribell is a pioneering medical technology company dedicated to revolutionizing the diagnosis and management of patients with serious neurological conditions. Our flagship product, the Ceribell System, introduces an innovative, point-of-care electroencephalography (EEG) platform that effectively addresses the unmet needs of patients in acute care settings. This technology is currently utilized in numerous community hospitals, prominent academic institutions, and major integrated delivery networks (IDNs) across the nation. Our team is united by a deep commitment to transforming critical care through our rapid seizure detection technology. Join us in this impactful movement!Position OverviewThe Contracts Manager, reporting directly to the Head of Contracts, will oversee the comprehensive management and compliance of corporate, customer, vendor, and government contracts. This pivotal role serves as a vital link between various departments, including Sales, Marketing, HR, IT, Engineering, Clinical Affairs, and Finance, ensuring all agreements align with internal policies and overarching business objectives.The ideal candidate will manage the complete contract lifecycle, ensuring strict adherence to federal, state, and local regulations. A key responsibility of this position is to maintain SOX compliance and enforce robust internal controls, guaranteeing that all contractual obligations meet the rigorous reporting standards expected of a public company.Key Responsibilities:Negotiation & Strategy: Engage in the negotiation of both straightforward and complex customer, commercial, and strategic agreements, including GPO, IDN, Data Privacy/Security, Clinical Study, partnership, and vendor agreements, while protecting the company's interests and balancing business, financial, and legal objectives.Advisory & Compliance: Keep Legal, Sales, Operations, and Executive teams informed about legal and healthcare compliance matters (e.g., AKS/Stark) and negotiated terms, utilizing a solid understanding of how contract terms affect Revenue Recognition.Complex Problem Solving: Address complex issues of broad scope requiring thorough analysis of various factors, collaborating with the Head of Contracts and exercising independent judgment when escalating concerns.CLM Optimization: Act as a power user for the Ironclad CLM; pinpoint opportunities to automate workflows, enhance template modularity, and streamline the quote-to-contract lifecycle.Process Improvement: Lead the design, implementation, and communication of process enhancements, enforce existing contracting rules, and provide a clear channel for resolving legal inquiries.

Mar 9, 2026

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Staff Mechanical Engineer at Ceribell | Sunnyvale

Ceribell

Full-time|On-site|Sunnyvale

Role overview The Staff Mechanical Engineer at Ceribell plays a key part in shaping and advancing the mechanical systems behind the company’s technology. This position involves hands-on design and development work, as well as ongoing improvement of existing systems. The role requires both creative problem-solving and a strong technical foundation, working alongside a team of experienced professionals in Sunnyvale. What you will do Design mechanical components and systems that are integral to Ceribell’s products Develop and refine mechanical solutions to align with project objectives Work closely with engineers and other team members to address technical challenges Apply mechanical expertise to support innovation across projects Location This role is based in Sunnyvale.

Apr 22, 2026

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Full Stack Software Engineer at ifm-us | Sunnyvale, CA

ifm-us

Full-time|On-site|Sunnyvale, CA

About the Institute of Foundation ModelsWe are a pioneering research laboratory focused on developing, comprehending, and managing foundation models. Our mission is to push the boundaries of research, cultivate the next wave of AI developers, and make significant contributions to a knowledge-driven economy.As a member of our innovative team, you will engage with leading researchers, data scientists, and engineers to address fundamental challenges in AI development. Your contributions will be instrumental in creating groundbreaking AI solutions that could transform entire industries. Your strategic and creative problem-solving skills will help position MBZUAI as a global leader in high-performance computing for deep learning, inspiring future AI innovators.The RoleWe are seeking a talented Full Stack Developer to work collaboratively with Researchers and ML Engineers in crafting AI applications and solutions derived from next-gen AI research. You will be part of a versatile team responsible for the complete software development lifecycle, from initial concept to deployment.As a Full Stack Developer, you should be adept in both front-end and back-end programming languages, development frameworks, and third-party libraries. A collaborative mindset and a flair for visual design and functionality are essential.

Apr 9, 2025

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Senior Manager of IT & Enterprise Software Strategy

Ceribell

Full-time|On-site|Sunnyvale, CA

Ceribell is hiring a Senior Manager of IT & Enterprise Software Strategy based in Sunnyvale, CA. This leadership role focuses on guiding projects that enhance and refine the company’s software solutions. The position plays a central part in shaping IT systems to align with business goals and improve organizational efficiency. Role overview The Senior Manager will lead strategic efforts to advance IT and enterprise software throughout the organization. Collaboration with teams across departments is essential to ensure technology supports evolving business needs. Oversight of projects aimed at increasing the efficiency and effectiveness of IT operations is a core responsibility. What you will do Lead company-wide initiatives to improve IT and enterprise software systems Partner with cross-functional teams to align technology with business requirements Oversee projects that enhance IT operational efficiency and effectiveness Requirements Strong background in technology and IT systems Demonstrated experience managing successful projects Skilled at collaborating with teams across different functions This position is suited for someone who brings both technical depth and strategic perspective to IT leadership.

Apr 23, 2026

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Full Stack Software Engineer at Scopely | Sunnyvale, CA

Scopely

Full-time|$145K/yr - $220K/yr|On-site|US - Sunnyvale, United States

At Scopely, we are on a mission to ignite daily play experiences across the globe. Our Niantic division is dedicated to motivating individuals to explore their surroundings, fostering a sense of community through interactive products that promote exercise and real-world engagement. We are in search of an innovative Full Stack Software Engineer to develop web applications that unite millions in real-world pursuits. We value engineers who possess a strong technical foundation, the ability to execute effectively, and a proactive attitude. The ideal candidate thrives in challenging environments, embraces ambiguity, learns rapidly from setbacks, and can transform abstract concepts into actionable tasks.

Feb 17, 2026

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Full-Stack AI Engineer at CoreWeave | Sunnyvale, CA or Bellevue, WA

CoreWeave, Inc.

Full-time|$139K/yr - $204K/yr|Hybrid|Sunnyvale, CA/Bellevue, WA

Join CoreWeave, The Essential Cloud for AI™, where innovation meets performance. As a Full-Stack AI Engineer, you'll develop advanced AI applications and solutions that empower our clients to harness the full potential of artificial intelligence. Collaborate with diverse teams to create cutting-edge technologies that drive efficiency and growth. Our hybrid work environment in Sunnyvale, CA, or Bellevue, WA, allows you to blend in-office collaboration with remote flexibility. Learn more about us at www.coreweave.com.Responsibilities:Design and implement AI-driven applications using platforms such as LangChain, LangGraph, ChatGPT API, and Glean API.Create responsive web and mobile applications with React (TypeScript) and other modern front-end frameworks.Build robust backend services using Node.js and Go for efficient data processing and automation.Develop internal AI agents and copilots for Finance, Billing, and Supply Chain, integrating with various systems like ERP and HRIS.Implement APIs and microservices to facilitate modular and event-driven architectures.Utilize GenAI tools (Cursor, Claude, Copilot, ChatGPT Codex) to streamline development processes.Ensure the application stack maintains high observability, security, and maintainability.Work closely with Finance, Accounting, Security, and Engineering teams to create intelligent, user-focused workflows.About You:As a Full-Stack AI Engineer, you will play a crucial role in enhancing CoreWeave's internal ecosystem by designing and developing intelligent applications that offer automation and exceptional user experiences across various domains.

Mar 6, 2026

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Firmware Engineer - All Levels at Ceribell | Sunnyvale, CA

Ceribell

Full-time|$120K/yr - $200K/yr|On-site|Sunnyvale, CA

About CeribellCeribell is a pioneering medical technology firm dedicated to revolutionizing the diagnosis and treatment of patients facing severe neurological challenges. Our flagship product, the Ceribell System, is an innovative, point-of-care electroencephalography (EEG) platform meticulously crafted to meet the critical needs of patients in acute care environments. Currently, our technology is utilized in numerous community hospitals, prestigious academic institutions, and major Integrated Delivery Networks (IDNs) nationwide. Join us in our mission to transform critical care through advanced seizure detection technology!Position Overview:We are seeking a passionate Firmware Engineer / Embedded Engineer at various experience levels who possesses a keen interest in biomedical applications and a robust background in embedded and IoT product development. As a key member of our R&D team, you will be instrumental in shaping the future of Ceribell’s life-saving technologies. Our firmware development is centered around the STMicroelectronics STM32 ARM Cortex microcontroller, leveraging FreeRTOS, IAR Embedded Workbench, and the TouchGFX framework. Collaboration within a cross-functional team is essential, alongside the ability to independently manage the development, testing, and documentation of your projects.Your Responsibilities:Design and validate firmware features for Ceribell’s EEG systems.Identify user requirements and translate them into new and enhanced features.Contribute to GUI development using frameworks such as Qt, TouchGFX, LVGL, or custom OpenGL-based solutions.Engage in code reviews, peer evaluations, and risk management processes.Generate and update technical documentation.Provide insights on firmware and hardware architecture for both new and existing products.

Feb 5, 2026

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Full Stack Developer at Sonsoft Inc | Sunnyvale

Sonsoft Inc.

Full-time|On-site|Sunnyvale

Join our dynamic team at Sonsoft Inc. as a Full Stack Developer! We are looking for a passionate and skilled individual to contribute to our innovative projects. You will be responsible for developing both the front-end and back-end of our applications, ensuring a seamless user experience. If you love coding and enjoy working in a collaborative environment, this is the perfect opportunity for you!

Nov 8, 2016

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Full Stack Developer at Sonsoft, Inc. | Sunnyvale

Sonsoft, Inc.

Full-time|On-site|Sunnyvale

Are you a talented Full Stack Developer looking for an exciting opportunity to grow your skills and contribute to innovative projects? Join Sonsoft, Inc. in Sunnyvale, where we are seeking a passionate individual to be part of our dynamic team. As a Full Stack Developer, you will work on both front-end and back-end development, collaborating with cross-functional teams to deliver exceptional software solutions.

Nov 4, 2016

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Senior Product Manager at Ceribell | Sunnyvale, CA

Ceribell

Full-time|$178K/yr - $196K/yr|On-site|Sunnyvale, CA

About CeribellCeribell is at the forefront of medical technology, dedicated to revolutionizing the diagnosis and management of patients facing severe neurological conditions. Our flagship product, the Ceribell System, is an innovative point-of-care electroencephalography (EEG) platform specifically engineered to meet the critical needs of patients in acute care. With its deployment in numerous community hospitals, prominent academic institutions, and major integrated delivery networks (IDNs) nationwide, our mission is to redefine critical care through our cutting-edge seizure detection technology. Join us in this transformative journey!Position Overview:We are looking for a dynamic and driven Senior Product Manager to spearhead the advancement of our Clarity seizure algorithm portfolio. This pivotal role involves shaping the future of algorithmic solutions that cater to the evolving needs of our patients.The ideal candidate will possess a robust technical foundation in EEG, biomedical signal processing, or machine learning algorithm development and exhibit a genuine passion for converting clinical challenges into effective solutions. You will also act as a liaison, engaging with Neurology Key Opinion Leaders (KOLs) to gather customer insights and guide the roadmap for forthcoming product and algorithm innovations.What You’ll Do:Conduct in-depth market research and competitive analysis to uncover unmet clinical needs and establish product strategies in line with Ceribell’s vision and business objectives.Translate clinical needs into actionable product and algorithm requirements.Serve as the Voice of the Customer (VOC) by fostering strong relationships with neurology KOLs and other stakeholders.Collaborate seamlessly with cross-functional teams, including Design, Engineering, Clinical, and Regulatory, to develop algorithmic products.Partner with commercial teams to formulate go-to-market strategies that resonate with Ceribell’s mission and business goals.

Feb 27, 2026

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Senior Software Engineer at Walmart Inc. | Sunnyvale, CA

Walmart Inc.

Full-time|On-site|Sunnyvale

Join Walmart Inc. as a Senior Software Engineer in Sunnyvale, CA, where you will be at the forefront of technological innovation. As a key member of our dynamic team, you will engage in designing, developing, and optimizing software solutions that empower our operations and enhance customer experiences.Your expertise will contribute to implementing best practices in software development, ensuring high-quality deliverables that meet our organizational standards. Collaborate with cross-functional teams to drive projects from conception through completion while continually improving our systems and applications.

May 23, 2022

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Systems Software Test Engineer at Taara | Sunnyvale, CA

Taara

Full-time|$160K/yr - $210K/yr|On-site|Sunnyvale, CA

About the TeamAt Taara, we are dedicated to transforming the world of connectivity. Originating from X, Google's Moonshot Factory, our mission is to bridge the digital divide by delivering high-speed, affordable internet through innovative light-based technologies. Join us in revolutionizing wireless optical communication and photonics chip technologies as we expand our reach globally.About the RoleWe are seeking a Systems Software Test Engineer to spearhead the automation and validation efforts for our comprehensive systems. This role is pivotal, as it involves not just testing APIs, but also architecting frameworks to ensure our software effectively controls high-precision hardware in real-time. You will play a crucial role in connecting software development with hardware reliability, ensuring that each code commit enhances our network's performance in real-world scenarios.Your Impact:Automated Framework Design: Develop and implement scalable automation frameworks to rigorously test embedded software and cloud integrations.Hardware-in-the-Loop Testing: Create and uphold HIL test benches, enabling real-time software interactions with physical hardware units under simulated field conditions.CI/CD Integration: Lead the incorporation of automated tests into the CI/CD pipeline, establishing quality gates for every software build.Comprehensive Data Path Validation: Collaborate with Cloud and Embedded teams to validate the data flow from the physical optical link to the backend monitoring dashboard.Performance Regression Testing: Develop automated regression suites to identify performance regressions impacting network throughput, latency, and stability.

Feb 5, 2026

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Senior Software Engineer - Low Latency Computing at SpaceX | Sunnyvale, CA

Space Exploration Technologies Corp.

Full-time|On-site|Sunnyvale, CA

Join SpaceX as a Senior Software Engineer within our Low Latency Computing team, where you will play a crucial role in developing high-performance systems for our Starlink satellite network. Your expertise will contribute to the creation of innovative solutions that enhance data transmission speeds and reduce latency, ensuring optimal performance for our users.

Apr 30, 2026

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Senior Full Stack LLM Engineer - Training

Cerebras Systems

Full-time|On-site|Sunnyvale CA or Toronto Canada

Cerebras Systems is at the forefront of AI technology, creating the world’s largest AI chip, which is 56 times larger than traditional GPUs. Our innovative wafer-scale architecture combines the computational power of dozens of GPUs into a single chip while simplifying programming to the level of a single device. This unique approach enables Cerebras to offer unmatched training and inference speeds, allowing machine learning practitioners to seamlessly execute large-scale ML applications without the complexity of managing numerous GPUs or TPUs. Cerebras’ clientele includes prestigious model labs, global enterprises, and pioneering AI-native startups. OpenAI has recently forged a multi-year partnership with Cerebras, aiming to deploy 750 megawatts of scale and revolutionizing critical workloads through ultra-fast inference. Our groundbreaking wafer-scale architecture powers Cerebras Inference, which provides the fastest Generative AI inference solution available—over 10 times quicker than GPU-based hyperscale cloud inference services. This significant increase in speed is transforming the user experience of AI applications, enabling real-time iteration and enhancing intelligence through additional agentic computation.About the RoleWe are looking for a dynamic and skilled engineer to join our cutting-edge Training Platform team. This team is dedicated to swiftly deploying state-of-the-art open-source models (such as LLaMA, Qwen, etc.) and customer-specific proprietary models on our Cerebras CSX systems. To excel in this position, you should be a system-minded generalist who thrives in fast-paced environments and is comfortable working across the entire Cerebras software stack.Your contributions will be vital in achieving extraordinary levels of performance, efficiency, and scalability for AI applications.

Feb 17, 2026

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Full Stack Developer

Sonsoft Inc.

Full-time|On-site|Sunnyvale

Nov 7, 2016

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Director of Systems Engineering (Hybrid)

Ceribell

Full-time|$216K/yr - $283K/yr|Hybrid|Sunnyvale, CA

About CeribellCeribell is at the forefront of medical technology, dedicated to revolutionizing the diagnosis and treatment of patients with serious neurological disorders. Our innovative Ceribell System is a state-of-the-art, point-of-care electroencephalography (EEG) platform designed to meet the critical needs of patients in acute care environments. It is currently utilized in numerous community hospitals, esteemed academic institutions, and major integrated delivery networks across the nation. Our passionate team is united in our mission to reshape critical care with our advanced seizure detection technology. Join us in making a difference!Position Overview:We are on the lookout for an exceptionally skilled Director of Systems Engineering to spearhead the development of core electrical hardware, systems, and software for our next-generation products while providing valuable systems engineering leadership for existing products. In this vital role, you will act as the primary technical leader responsible for transforming complex user requirements into effective system architectures. You will manage and expand a diverse team comprising Electrical Engineering, Systems Engineering, and Software/Embedded Linux experts. Additionally, you will oversee the complete system integration, ensuring flawless interaction between hardware and software systems while guiding key external partners and development initiatives.Your Responsibilities:Engineering Leadership: Lead, mentor, and nurture the growth of the Electrical, Systems, and embedded software engineering teams.Systems Engineering & Architecture: Take ownership of the system-level architecture for both core and next-generation products. Drive the generation and traceability of requirements across hardware and software disciplines, ensuring designs are reliable, scalable, and manufacturable.Software Oversight: Direct the software development strategy for next-gen products, overseeing both the embedded stack and OS-SW teams, driving OS-level configurations, kernel optimizations, and managing external contractors for board support packages (BSPs).Hardware Execution: Lead the Electrical Engineering team through the entire hardware lifecycle, from component selection and schematic capture to PCB layout, board bring-up, and design for manufacturability (DFM).Cross-Functional Integration: Collaborate across various departments to ensure cohesive and integrated product development.

Mar 31, 2026

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Senior Software Engineer, High Performance Computing at SpaceX | Sunnyvale, CA

Space Exploration Technologies Corp.

Full-time|On-site|Sunnyvale, CA

Join the SpaceX team as a Senior Software Engineer specializing in High Performance Computing (HPC) for our innovative Starlink project. You will be responsible for developing and optimizing software solutions that enhance the performance and efficiency of our satellite internet constellation.Your role will involve collaborating with cross-functional teams to design, implement, and maintain high-performance computing systems that meet the rigorous demands of our satellite operations. This is an opportunity to work at the forefront of technology and contribute to a mission that aims to revolutionize global internet access.

Apr 30, 2026

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Senior Software Engineer - Core Experiences at Speechify | Sunnyvale, CA

Speechify

Full-time|On-site|Sunnyvale, CA, USA

About Speechify Speechify helps people access information in new ways by turning articles, documents, and books into audio. The platform supports users whether they are at their desk, commuting, or learning at their own pace. Speechify’s goal is to make learning deeper, faster, and more enjoyable. The company has seen rapid growth and is recognized as a leader in audio information solutions. Role Overview: Senior Software Engineer - Core Experiences The Core Experiences Team at Speechify builds and maintains key services and SDKs that shape the user experience across multiple platforms. This position suits someone who enjoys working where product and infrastructure meet, thinks strategically, and cares about building clear, reliable APIs to improve how users interact with Speechify. What You Will Do Work with Product Teams to define project scopes, improve feedback loops from customers, weigh design and integration options, and deliver solutions through Speechify’s cross-platform SDK. Improve existing features for better performance, including faster loading and smarter content parsing, by developing efficient abstractions and refining algorithms. Deploy cloud functions, lightweight backend services, and scheduled jobs using Kotlin. Location This role is based in Sunnyvale, CA, USA.

Apr 20, 2026

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Software Engineer, Cloud Security at Illumio | Sunnyvale, CA

Illumio

Full-time|On-site|Sunnyvale, California - HQ

Join Us in Making the Digital World Safer!At Illumio, we stand at the forefront of ransomware and breach containment, transforming how organizations manage cyber threats while ensuring operational resilience. Our cutting-edge breach containment platform, powered by the Illumio AI Security Graph, is designed to identify and neutralize threats across diverse hybrid multi-cloud environments, effectively halting the escalation of attacks before they can cause significant harm.As a recognized leader in the Forrester Wave™ for Microsegmentation, Illumio empowers organizations to adopt a Zero Trust approach, enhancing cyber resilience for the infrastructure, systems, and entities that underpin the global economy.Location: 5 Days On-Site at Our Sunnyvale, CA Headquarters.Our Vision:Our Engineering team thrives on a culture of thought leadership, independence, and accountability. This dynamic empowers us to enhance digital safety collaboratively. Those who join our ranks will lead the charge in Zero Trust Segmentation, working with a technology stack that spans operating systems, distributed applications, UI, and visualization. Together, we will forge world-class products, driven by a diverse array of perspectives and a steadfast commitment to innovation amidst unprecedented cybersecurity challenges.Your Role:You will engineer containerized (micro) services for a distributed multi-tenant system, processing data, real-time events, and network telemetry from multiple public clouds to deliver insights, visibility, and security recommendations that help customers mitigate risks in the cloud.You will be responsible for designing services, meticulously detailing the architecture, defending your proposals before your peers, and delivering robust implementations.You will also play a key role in mentoring junior engineers, recent graduates, and interns, fostering their growth and productivity within the team.Your primary coding language will be Go, and you will work with data pipelines utilizing SQL or other interfaces. We embrace individuals with diverse language and technology backgrounds who are eager to learn.You will own significant features and subsystems, managing the entire software development lifecycle from requirements clarification to successful deployment and user engagement.You will engage with the operational aspects of the system, confronting the challenges of managing a complex system in real-time.

Mar 23, 2026

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