System Performance Engineer Jobs

Our vision is to transform how the world uses information to enrich life for all. Join an inclusive team passionate about one thing: using their expertise in the relentless pursuit of innovation for customers and partners. The solutions we build help make everything from virtual reality experiences to breakthroughs in neural networks possible. We do it all while committing to integrity, sustainability, and giving back to our communities. Because doing so can fuel the very innovation we are pursuing. Lead end-to-end SSD firmware test architecture design and quality validation for enterprise/data center/automotive SSD products. Build high-efficiency automation platforms and CI/CD pipeline, drive critical issue resolution and product mass production. Key Responsibilities Own overall test architecture, validation strategy and quality system for enterprise SSD firmware Design and implement test solutions covering functionality, performance, reliability, QoS, PLP, FTL, GC, power and security Build and optimize automation test framework, long-stability test system and CI/CD pipeline to support mass validation Lead root cause analysis and closure of critical FW issues including hang, drop, performance degradation and compatibility problems Participate in product architecture review and provide technical suggestions on FW design, NAND selection and reliability targets Drive test team capability improvement, process optimization and technical standardization Track new storage technologies: PCIe 5.0/6.0, NVMe 2.0, ZNS, CXL, automotive and industrial storage. Requirements Ba

About Hark Hark is an artificial intelligence laboratory, building the most advanced, personal intelligence in the world. We believe that artificial intelligence can be used to help offload our mental workload through thinking like us and sometimes ahead of us. Intelligence that is proactive and personalized through new models capable of interacting with the world through speech, text, vision and persistent memory. We're pairing that intelligence with next-generation hardware to create a universal interface between humans and machines. While today's AI largely operates through chat boxes and decade-old devices, Hark is focused on what comes next: agentic systems that interact naturally with people and the real world. About the Role The Embedded Software team owns the software running on Hark’s next generation of AI hardware, and we are looking for an Embedded Software Engineer to build the system software at the heart of it. You will design, implement, and debug system-level components and services that span the kernel, user space, and the microcontroller domains, and you will work across RTOS, bare metal, and Linux environments on the same product. This is a systems software role. You will partner with the BSP, platform, UX, firmware, and hardware teams to make the device work as one product. Responsibilities Design, implement, and debug system-level components and services across kernel, user space, and MCU domains Develop system software on RTOS and bare metal environments as well as embedded Linux Build and maintain interfaces across the stack to deliver end to end features Run performance analysis and produce memory and power profiles, then close the gaps they expose Partner with the BSP, platform, and UX teams so system software, drivers, and user-facing behavior land together Debug across layer and process boundaries, from a user space service down to the hardware Requirements 5+ years of professional embedded software development experience

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team The Merchant Experience team builds the UI operating system and core experiences that power decades of growth for millions of businesses globally, enabling Stripe to be the business SaaS solution of choice for next-gen companies. We own the foundational platforms and product surfaces that merchants interact with every day—from the Stripe Dashboard to the frameworks and tooling that hundreds of Stripe engineers use to build world-class user interfaces. We're at an inflection point. AI is fundamentally changing how users interact with software, and we believe Stripe is uniquely positioned to reimagine what a merchant experience looks like in an AI-native world. At the same time, we're raising the bar on the quality and performance of everything we ship—because the millions of businesses that depend on Stripe deserve an experience that is fast, reliable, and crafted with care. What you'll do As a Senior Staff Engineer on the Merchant Experience team, you'll be a technical leader responsible for shaping the next generation of how Stripe merchants interact with our products. You'll drive a step-function improvement in the quality and performance of our core surfaces, and help define what AI-powered merchant experiences look like at Stripe. Responsibilities Define technical strategy for merchant-facing experiences across Stripe, with a focus on quality, performance, and the integration of AI into core user workflows Lead the design and delivery of

About Hark Hark is an artificial intelligence company building advanced, personalized intelligence. One that is proactive, multimodal, and capable of interacting with the world through speech, text, vision, and persistent memory. We're pairing that intelligence with next-generation hardware to create a universal interface between humans and machines. While today's AI largely operates through chat boxes and decade-old devices, Hark is focused on what comes next: agentic systems that interact naturally with people and the real world. To get there, we're developing multimodal models and next-generation AI hardware together - designed from the ground up as a single, unified interface for a new era of intelligent systems. About the Role We are looking for a Hardware Test Engineer to build the test infrastructure that ensures our AI-powered devices meet quality, reliability, and performance standards at every stage of development. You will own test strategy from board bring-up through mass production, designing fixtures, writing automation scripts, and defining the criteria that decide whether a product ships. From functional test on the bench to burn-in and stress testing at the factory, you will be the last line of defense before our devices reach users. Responsibilities Test Strategy: Define and own the end-to-end test plan across EVT, DVT, PVT, and production milestones. Fixture Design: Design and develop custom test fixtures (bed-of-nails, pogo pin, cable harness) for PCBA and system-level testing. Test Automation: Write automated test scripts in Python to control instruments, collect data, and generate pass/fail reports. Board Bring-Up: Lead electrical bring-up of new PCBAs, debugging power rails, clocks, interfaces, and peripheral functionality. Reliability Testing: Plan and execute environmental stress tests including thermal cycling, vibration, drop, and accelerated life testing. Production Support: Work with contract manufacturers to deploy and maintain test sta

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities IoT System Design & Implementation: Lead the schematic design and PCB layout review for IoT Gateway products, ensuring robust system stability and optimized communication performance for smart building applications. Sensing & Signal Acquisition: Design precision sensing circuitry for CT Sensors (50A/200A) and CT Modules, focusing on low-level signal acquisition, noise filtering, and high-resolution A/D conversion. Protocol Integration & Automation: Develop and integrate DALI Modules and various industrial/building communication protocols (Modbus, CAN, etc.) to ensure seamless interoperability within automation control systems. Edge Computing Hardware Optimization: Optimize ARM-based SoC/MCU hardware architectures to balance edge computing performance, power efficiency, and thermal management requirements. Test & Validation: Create comprehensive test plans, execute validation tests (signal quality, functional capability), and document results. Market Analysis: Conduct teardowns and competitive analyses of new products to stay ahead of industry trends. Minimum Qualifications Core Experience: Proven experience in hardware design for Edge Computing platforms using ARM-based SoCs or high-performance MCUs, with a strong grasp of high-speed signal integrity. Product Expertise: 3+ years of experience in t

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities Validate system functionality, design, compatibility, performance, and stress capacity; capable of completing the verification independently Execute switch hardware test items (4 Corner / Power Cycling / PSE Conformance / Eload testing / 2nd Source Test). Analyze test data, identify issues, and recommend improvements. Optimize testing processes through improved methodologies, tools, and test program development. Establish and maintain test environments. Requirement Responsible for hardware system function testing (HW System Test) of Enterprise & Data Center Switches/Gateways. Proficient in using a multimeter, thermal chamber, data logger, and EMC compliance equipment. Experience in hardware or design quality testing. Experience in environmental stress testing, particularly thermal and reliability systems. Bachelor's degree in Electrical Engineering, Computer Science, Industrial Engineering, or a related field, with knowledge of networking, radio, and Linux. Preferred Qualifications Experience in data center Ethernet switch setup, full-load stress testing, and system validation (100G/200G/400G/800G). Familiarity with multimeters, oscilloscopes, spectrum analyzers, thermal chambers, power supplies, Ethernet traffic analyzers, and electronic loads. Experience in PoE testing, ESD, thermal testing, power consumpti

Everpure (NYSE: P) has evolved from storage pioneer to data platform, closing fiscal 2026 with $3.7 billion in revenue, its first billion-dollar quarter, and accelerating growth into FY27. Our strategic agenda spans the companies defining the next era of technology - hyperscalers, AI labs, the AI hardware supply chain, data platform providers, and the broader AI ecosystem. This type of work—work that changes the world—is what the tech industry was founded on. So, if you're ready to seize the endless opportunities and leave your mark, come join us. THE ROLE You will be a key Senior Software Engineer driving the digital transformation of Everpure focused on innovating and enhancing our Modern Data platforms. Your mission is to design and implement highly reliable, high-performance algorithms and technologies that redefine the customer experience. This role requires an senior engineer who will use a deep understanding of organizational objectives to resolve complex issues and deliver innovative, end-to-end solutions alongside cross-functional engineering and product teams. WHAT YOU'LL DO Implement strategic policies and develop novel, high-performance algorithms for distributed systems, ensuring the achievement of challenging goals (e.g., six 9's reliability ). Own the end-to-end delivery of innovations , from initial concept and design through final testing and deployment into a shipped product, driving critical business outcomes. Analyze and resolve complex technical issues where a deep evaluation of variable factors is required, serving as a subject matter expert and selecting appropriate methods and techniques for obtaining results. Network with key contacts outside your immediate area of expertise to gather requirements and validate solutions, influencing system design decisions across functional boundaries. Mentor junior engineers and coordinate the technical activities of a project sub-team to maintain schedules and align with architectural vision. WHAT YOU BRIN

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Ubiquiti Prague R&D team is looking for experienced Embedded Firmware Engineer (Access). Candidates should be prepared to work from our Prague office at least two times per week. Responsibilities: Work as part of a global, cross-functional team of firmware, hardware, and product engineers to develop cutting-edge access control products and technologies Design, implement, and maintain embedded firmware for current and next-generation access devices (readers, hubs, controllers) Enhance and optimize existing firmware for performance, stability, and security Participate in code reviews to ensure adherence to best practices and maintain high code quality standards Collaborate closely with BSP, Hardware, Backend, Mobile, and Product Assurance (PA) teams throughout the product development lifecycle Diagnose, troubleshoot, and perform root-cause analysis of firmware and system-level issues Support manufacturing and production validation by resolving firmware-related issues and assisting with firmware update pipelines Requirement (Must-Haves): 3+ years embedded firmware development experience with C Good knowledge of network protocols (TCP/IP, HTTP, Websocket, TLS/SSL) Experience with microcontrollers, SoCs, embedded Linux and RTOS Experience with access control systems (e.g., card readers, NFC, mobile unlocking) Knowledge of Git vers

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities: Reviewing and analyzing system specifications Reporting and documenting technical issues Analyzing community reports and reproducing reported bugs Support developers with bug reproducing, retesting bugfixes, testing new features Search for possible improvements Communication with development teams Monitoring of issues from the Ubiquiti community forum Knowledge and experience Must have: 2+ years of experience testing modern Web and Mobile applications Experience with AI tools - Claude, Codex, etc. Strong computer network knowledge (TCP/IP, Internet, WiFi, VLAN, Firewall, VPN, etc.) Responsibility, accuracy, focus on detail Analytical mind and problem-solving skills Fluent in English (daily basis in written form) and Czech Base knowledge of Unix/Linux (shell commands, ssh) Experience with Jira and Confluence Nice to have: Experience in performance testing Experience in programming Bash scripting Benefits: Kitchen packed with food, snacks & sodas, meal allowance Flexible working hours Informal startup atmosphere filled with excitement Team building activities Generous budget to select your work station according to your preferences Competitive salary and 5 weeks of vacation per year Discretionary bonuses based on individual performance The newest web technologies, experimenting wit

Couchbase, the operational data platform for AI, empowers businesses to succeed by bringing data to life in new ways. Major market-leading companies rely on Couchbase for mission critical operational, analytical, mobile and AI workloads. Built to replace legacy infrastructure and fragmented data services, Couchbase empowers enterprises with a unified platform architected for performance, flexibility and global scale. With Couchbase, organizations bring their data to life, launching game‑changing customer experiences, exploring the limitless potential of AI, and seamlessly extending applications from the cloud to the edge and beyond. Couchbase’s AI‑ready technology and enterprise partnership model eliminate complexity and reduce total cost of ownership, enabling teams to stay agile, innovative and secure. Couchbase believes data should never slow you down, but act as the foundation for your next breakthrough. Discover why Couchbase is trusted to help the world’s biggest players scale, move fast and stay resilient, no matter what’s next on their roadmap. Visit couchbase.com and follow us on LinkedIn and X. Want to be part of our story? Apply today! Lead Software Engineer - Storage As a key contributing member of the storage development team, you will be responsible for enhancing the highly scalable and performant storage engines used by both Couchbase Server and Couchbase Capella. You will be developing a highly-available and concurrent enterprise-grade system software. Most of all, you will be able to celebrate the wins by experiencing the direct result of your hard work from our customers’ success stories. The ideal candidate will have a strong technical background, excellent communication skills, and proactive problem-solving skills. The innovative work storage team does has been widely recognized by the industry. The following publications in VLDB conferences reflect the storage work at Couchbase Nitro: A Fast, Scalable In-Memory Storage Engine for NoS

We are seeking a Staff engineer to design, build, and operate the internal and external Observability stack for the MongoDB platform. Tens of thousands of customers depend on our Observability stack to monitor their database clusters and to generate actionable alerts to safeguard critical workloads. This is an opportunity to join a team that is responsible for all Observability systems that support metrics, metric visualization, logs, traces, and alerts for MongoDB. We are looking for engineers with high standards, and experience in setting direction and technical leadership for large engineering teams in designing and operating complex distributed systems, with strict SLO on security, durability, availability and performance. As MongoDB Atlas and its supporting infrastructure continue to experience rapid growth, the demand for high-cardinality observability data for internal and external use cases means we need to continually innovate and scale our systems to the next level. For example, MongoDB Observability systems need to handle 10’s of billions of metrics time series, all whilst processing petabytes of logs, traces, and events. Our stack includes VictoriaMetrics, Splunk, Flink, WarpStream/Kafka, Java, Golang Fluentbit. In addition to owning critical components of our observability infrastructure, as a Staff engineer on the team, you’ll also work closely with other SWE, Product and SRE teams to promote and implement best practices in instrumenting and monitoring their services. This is a highly collaborative role, and you will get to own some of the most relied upon internal infrastructure at Mongo. Our team champions a strong culture of inclusivity, diversity, and collaboration. If you want to be a deeply technical leader on a collaborative team that applies low-level systems expertise to build the foundational infrastructure of a popular database, join us! Let’s build a faster, more reliable, and exceptionally observable database system together. W

MeltPlan | Planning Engine for the Built Environment MeltPlan is building the “planning engine” for the $14 Tn construction industry, an AI system designed specifically to optimize decisions before construction begins. While design software optimizes use and aesthetics and construction software optimizes execution and control, MeltPlan is building the missing layer - software that optimizes decisions and tradeoffs upstream, before scope is locked, procurement begins, and change orders become inevitable. MeltPlan’s long-term goal is to help teams make construction “boring” by making planning more intense: surfacing constraints and tradeoffs early, aligning stakeholders before plans are frozen, and reducing the need for late-stage redlines, rework, and change orders. MeltPlan is founded by operators who have built at scale. Kanav previously co-founded Innovaccer, a $3Bn health-tech company focused on making US healthcare more affordable and accessible. He’s now applying that systems-level thinking to construction.He’s joined by Tanmaya Kala, former Project Executive at DPR Construction, who led large commercial, healthcare, and life sciences projects. We combine deep tech scale with real construction execution. What This Role Really Is Code writing is a commodity. We’re not hiring someone to close tickets. We’re hiring someone who: Is biased toward building Thinks in systems Designs for scale and resilience Reviews architecture, not just PRs Can move fast without creating long-term mess You’ll ship products daily. You’ll also help shape the system so it doesn’t collapse under growth. What You’ll Do Build end-to-end features (DB → API → UI) Design scalable data models and backend architecture Ship clean, production-grade frontend experiences Review and improve system design decisions Work directly with founders on product direction Help define engineering standards as we scale What We’re Looking For Strong backend fundamentals (APIs, databases, performance, system desi

Senior Engineering Manager — Lab Execution Platform : Women’s Health About the Role This is your chance to own a platform that lab scientists rely on every single day—and to rebuild it from the ground up. You'll lead maintenance of our off-the-shelf Lab Execution System while driving its transition to a custom, in-house platform. Every improvement you ship makes lab operations faster, makes scientists' lives easier, and ultimately helps improve patient health outcomes. The work is real, the impact is immediate, and the customers are just down the hall. You'll treat Lab Operations and R&D as your primary customers, partnering with them to build an intuitive, efficient, scalable Lab Execution platform they'll love using. You'll lead a small, sharp team in a fast-moving Kanban or Scrum workflow, lean hard into a "do more with less" mindset, and put AI to work multiplying what your engineers can accomplish. You'll stay close to the code while leading with impact and kindness, because the best teams are healthy teams. Key Responsibilities Technical Leadership & Development Own the design, build, and maintenance of both the off-the-shelf and custom Lab Execution platforms, keeping high-throughput lab processes running without a hitch. Build an AI-forward team that reaches for modern tooling to move faster and ship smarter. Stay hands-on—dive into the code and test the system yourself to make it better. Build and scale cloud-based microservices and front-end applications that power real lab workflows. Set the bar for technical excellence: reliability, performance, and a user experience people actually enjoy. Own the CI/CD pipeline and lock in quality with automated testing. Architect infrastructure that scales effortlessly and stays cost-smart. Customer-Focused Collaboration Be the bridge between engineering and lab users, turning real-time feedback into rapid improvements. Build tight relationships with Lab Operations, R&D, and stakeholders so their needs stee

MongoDB is seeking a Senior Software Engineer to join the Atlas Clusters Organization. The organization is responsible for building MongoDB Atlas, our database as a service offering and fastest growing product. Atlas allows users to deploy fault-tolerant, secure, globally distributed MongoDB clusters in just minutes. This includes developing software to interface with the three major cloud providers (AWS, Azure, and GCP) in order to bring security, durability, availability, and performance to all deployments of MongoDB. We are forming a new Atlas Clusters team in the Dublin area. We are looking to speak to candidates who are based in Dublin for our hybrid working model. What you’ll do Build and design new features for MongoDB Atlas Contribute to and lead complex technical projects Work with stakeholders throughout MongoDB to build our roadmap and product offerings Work with customers and support engineers to fix issues and become part of our on-call rotation Collaborate with team members to develop our codebase, best practices, and design principles Foster an inclusive and respectful work environment according to MongoDB's Core Values We’re looking for someone who Has at least 6 years of professional software development experience Is skilled at writing large-scale, distributed backend systems in a compiled language (Go, Java, C#, etc.). Has experience with at least one major cloud provider technology (AWS, Azure, GCP) Has led the launch of a new module and maintained it in production Is eager to solve tough problems Has excellent communication skills Is curious, collaborative, and motivated Success Measures In 3 months, you'll have shipped code into production and collaborated with the team to solve tough problems In 6 months, you'll have contributed to a large project and joined our on-call rotation In 12 months, you'll have designed new features, led development work, and become a go-to expert on parts of the system About MongoDB MongoDB is built for

About the Role Together AI is building the AI Native Cloud, an end-to-end platform for the full generative AI lifecycle, combining the fastest LLM inference engine with state-of-the-art GPU cloud infrastructure. The Together Cloud team builds the [Together GPU Clusters](https://www.together.ai/gpu-clusters) flagship IaaS product that provides high-performance, AI-ready GPU clusters through a self-serve cloud console, along with the virtualized infrastructure layer powering Together's inference, RL, and fine-tuning products. As a Senior Software Engineer focusing on AI Compute in the Together Cloud org, you will build and own major components of the next generation AI cloud platform – a highly available, global cloud infrastructure with cutting-edge virtualization of the latest ML hardware: GB300s/VRs, BlueField DPUs, InfiniBand and dual/quad-plane RoCEv2 fabrics. That virtualized computing platform powers our own SaaS products – inference, RL, and fine-tuning – and serves external cloud customers through self-serve offerings such as on-demand/reserved Kubernetes/Slurm clusters, across dozens of data centers and hundreds of thousands of GPUs. The hard problems in rapidly scaling heterogeneous GPU fleets are software problems: fully automated bootstrapping of GPU data centers, high-performance virtualization of GPU compute and DC networking without compromising isolation or portability, and fault-tolerant decentralized control planes. We solve them by building global and in-DC services, Kubernetes operators, and high-performance SDN libraries, forking hypervisors and Linux kernels, and building infra tailored to inference and fine-tuning. You'll own massive greenfield projects across their full lifecycle – scoping the problem and writing PRDs with our PMs, designing the system, and building it through to GA launch. Responsibilities Build the GPU and network virtualization stack: the hypervisor, kernel, and SDN work that makes GPU compute and DC networking high-perform