Calibration Lab Engineer Jobs

Set the direction and shape the science behind who gets hired. At Gallup, our pre-hire assessment science is backed by decades of research, millions of data points and a body of work that has influenced how organizations select talent around the world. We are looking for a director to lead the next chapter of that science in close partnership with the researchers, technologists and client teams who carry it to market. The work of our Hiring Analytics practice spans the full range, from building proprietary instruments to curating and validating the best of what already exists. Leading this practice requires exceptional judgment to choose the right solution and strategic vision to modernize and advance assessment science in a rapidly evolving industry. This is a player-coach role in the truest sense: senior enough to set where the portfolio goes, yet close enough to the methods that the work still carries your fingerprints. You will guide the practice into adaptive testing, AI-augmented assessment and modern validation while developing a small, senior team that grows because you are in the work alongside them. What You’ll Do Lead the construction and validation of assessments from the ground up across cognitive, behavioral, situational and work-sample formats: item writing at scale; scale development; IRT calibration; and the criterion, content and construct validation that hold up to EEOC and Uniform Guidelines scrutiny. Partner directly with clients , scoping needs, shaping solutions, presenting psychometric findings and defending the science with equal fluency to legal teams, executives and non-technical stakeholders. Build structured interview systems at speed, developing

Set the direction and shape the science behind who gets hired. At Gallup, our pre-hire assessment science is backed by decades of research, millions of data points and a body of work that has influenced how organizations select talent around the world. We are looking for a director to lead the next chapter of that science in close partnership with the researchers, technologists and client teams who carry it to market. The work of our Hiring Analytics practice spans the full range, from building proprietary instruments to curating and validating the best of what already exists. Leading this practice requires exceptional judgment to choose the right solution and strategic vision to modernize and advance assessment science in a rapidly evolving industry. This is a player-coach role in the truest sense: senior enough to set where the portfolio goes, yet close enough to the methods that the work still carries your fingerprints. You will guide the practice into adaptive testing, AI-augmented assessment and modern validation while developing a small, senior team that grows because you are in the work alongside them. What You’ll Do Lead the construction and validation of assessments from the ground up across cognitive, behavioral, situational and work-sample formats: item writing at scale; scale development; IRT calibration; and the criterion, content and construct validation that hold up to EEOC and Uniform Guidelines scrutiny. Partner directly with clients , scoping needs, shaping solutions, presenting psychometric findings and defending the science with equal fluency to legal teams, executives and non-technical stakeholders. Build structured interview systems at speed, developing

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. Job Summary We are looking for a highly strategic and forward-thinking Staff / Principal Recruiter to join our Talent Acquisition team. This is not a transactional recruiting role—this individual operates as a trusted business advisor and talent strategist , shaping hiring outcomes in a complex, fast-evolving environment. In this role, you will lead hiring strategies, influence senior stakeholders, and drive critical talent programs aligned with business priorities. You will apply strong judgment, calculated risk-taking, and data-driven decision-making to navigate ambiguity and accelerate hiring outcomes. Success in this role requires the ability to balance strategic thinking with execution excellence , while leveraging AI, digital tools, and innovative approaches to elevate hiring effectiveness. Main Responsibilities Strategic Talent Advisory & Decision-Making Act as a strategic talent advisor to business leaders, shaping workforce and hiring strategies Apply critical thinking and sound judgment to assess hiring trade-offs, risks, and opportunities Make informed decisions in ambiguous situations, including prioritization, candidate calibration, and hiring outcomes

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview As a Senior Machine Learning Engineer II on the Ads Response Prediction team, you will lead the design and development of core ML models that power Instacart’s ads ecosystem. This is a research-leaning role focused on theoretical problem formulation, training methodology, and model quality rather than infrastructure or full-stack engineering. You will tackle fundamental challenges in pCTR modeling such as mitigating selection bias, position bias, and optimizer’s curse in training data, improving model calibration across surfaces and domains, and advancing our multi-task learning and sequence modeling capabilities. You will also have the opportunity to shape our next-generation foundation model approach for ads ranking and contribute to cutting-edge retrieval systems like TIGER (Transformer Index for Generative Recommenders), Semantic ID and domain language

We are seeking a Head of Executive Search to build and lead a centralized, specialized function responsible for global leadership hiring across sales, marketing, technical solutions, and G&A. This role will bring consistency, rigor, and strategic ownership to Senior Director, VP, and SVP hiring while partnering closely with executive stakeholders to deliver high-impact talent outcomes. You will elevate assessment and decision-making practices, develop proactive executive talent pipelines, and generate market intelligence that informs hiring and organizational strategy. This is a high-visibility opportunity to shape how Datadog attracts, evaluates, and hires senior leadership globally, with potential to expand scope to Director+ and executive-level searches over time. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You’ll Do: Own end-to-end strategy and execution for Senior Director, VP, and SVP searches, with dotted line to APAC Recruit highly confidential searches end to end, taking on execution responsibilities when needed Build and lead a specialized executive search team, including defining operating rhythms and performance expectations Establish and operationalize a standardized leadership hiring playbook, including executive assessment frameworks, confidentiality protocols, and stakeholder governance Partner directly with C-suite, VP, and SVP stakeholders to drive alignment, calibration, and high-quality hiring decisions Develop proactive, long-term pipelines for critical leadership roles while producing market intelligence to inform talent and organizational strategy Define and execute an agency engagement and executive candidate closing strategy to reduce external spend and deliver a high-touch candidate experience Who You Are: Expe

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking a highly skilled Electrical Commissioning Technician to support the buildout and energization of SpaceXSI's high-performance data centers. In this critical hands-on role, you will perform commissioning, testing, and troubleshooting of electrical systems that power our next-generation AI supercomputing infrastructure. You will work closely with construction, engineering, and operations teams to ensure safe, reliable, and high-quality electrical systems from initial installation through full system turnover. This is a full-time, onsite role with significant travel to SpaceXSI data center sites. RESPONSIBILITIES: Execute electrical commissioning activities for medium and low voltage power distribution systems, switchgear, transformers, UPS systems, generators, PDUs, and associated controls in data center environments. Perform point-to-point wiring checks, functional testing, calibration, and system integration verification. Troubleshoot and resolve electrical issues during pre-commissioning, commissioning, and startup phases. Develop and execute detailed commissioning test procedures, scripts, and documentation in accordance with project specification

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about what you’ve built. At Ramp, everyone is a builder who owns problems end to end and makes consequential decisions that shape the outcome. The median Ramp customer saves 5% and grows revenue 16% in their first year – far in excess of businesses operating without Ramp. We believe every ambitious company deserves the same. If you want to build systems that directly shape how companies move and manage billions, Ramp is the place to do it. About the Role Ramp is building something ambitious, and we believe our most important advantage is our people. This role sits at the foundation of that belief. You'll help shape how Ramp identifies, evaluates, and hires world-class engineering talent, with a particular focus on the engineers at the center of what we're building next. This is a craft role. You'll own pipelines end-to-end, partner directly with our Engineering leadership, and be accountable for the quality of the people we bring through the door. We're looking for a Technical Recruiter who treats hiring as a discipline. Someone who cares as much about candidate experience and calibration as they do about closing. You won't just be working off a req list. We're looking for someone who can take ambiguous or high-level direction from engineering leadership and turn it into a sharp, targeted search, knowing exactly who they want before the role even opens. You'll be expected to have strong opinions on talent, defend them with evidence, and push back on stakeholders when the bar is at ris

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking a highly skilled Sr. Electrical Commissioning Technician to support the buildout and energization of SpaceXSI's high-performance data centers. In this critical hands-on role, you will perform commissioning, testing, and troubleshooting of electrical systems that power our next-generation AI supercomputing infrastructure. You will work closely with construction, engineering, and operations teams to ensure safe, reliable, and high-quality electrical systems from initial installation through full system turnover. This is a full-time, onsite role with significant travel to SpaceXSI data center sites. RESPONSIBILITIES: Execute electrical commissioning activities for medium and low voltage power distribution systems, switchgear, transformers, UPS systems, generators, PDUs, and associated controls in data center environments. Perform point-to-point wiring checks, functional testing, calibration, and system integration verification. Troubleshoot and resolve electrical issues during pre-commissioning, commissioning, and startup phases. Develop and execute detailed commissioning test procedures, scripts, and documentation in accordance with project specifica

We are looking for research interns to join our Quantitative Equity team for 4 to 8 months starting in January or May 2027. We are a top-performing quant fund that manages over $111 billion in financial assets, with a track record spanning more than two decades. As a privately owned firm, we take a long-term perspective, investing in lasting business success and the long-term careers of our people. What You Will Do Investing presents a rich set of research problems that you will explore in this role. Quantitative Researchers lead the development of our investment models and strategies. As an intern, you will work on a real investment research project that requires thinking deeply about the factors that determine business success and modeling the complex dynamics of capital markets, including how information is created, interpreted and reflected in prices. Y our work will have a direct impact on investment outcomes. You will own your research project from beginning to end, including idea generation, signal construction, backtesting and calibration. There is plenty of opportunity to collaborate with your peers and receive mentorship from senior members of our research team. Our team works with: State-of-the-art techniques, including reinforcement learning, large language models, AI agents and econometric methods Large financial and alternative data Advanced technologies, such as high-performance computing infrastructure and custom research systems What You Bring Exceptional quantitative and technical ability : a strong foundation in mathematics, statistics, computer science, economics, finance or a related discipline An interest in finance: an interest in the domain is essential ; an understanding of capital markets and the drivers of business success is valuable but not required Evidence of exceptional ability and achievement: demonstrated through academic, professional, research, competition

We are looking for researchers to join our Quantitative Equity team. We are a top-performing quant fund that manages over $111 billion in financial assets, with a track record spanning more than two decades . As a privately owned firm, we take a long-term perspective, investing in lasting business success and the long-term careers of our people. What You Will Do Investing presents a rich set of research problems that you will explore in this role. Quantitative Researchers lead the development of our investment models and strategies. This requires thinking deeply about the factors that determine business success and modeling the complex dynamics of capital markets, including how information is created, interpreted and reflected in prices . Y our work will have a direct impact on investment outcomes. You will own your research projects from beginning to end, including idea generation, signal construction, backtesting and calibration. There is plenty of opportunity to collaborate with your peers and receive mentorship from senior members of our research team. Our team works with: State-of-the-art techniques, including reinforcement learning, large language models, AI agents and econometric methods Large financial and alternative data Advanced technologies, such as high-performance computing infrastructure and custom research systems What You Bring Exceptional quantitative and technical ability : a strong foundation in mathematics, statistics, computer science, economics, finance or a related discipline An interest in finance: an interest in the domain is essential ; an understanding of capital markets and the drivers of business success is valuable but not required Evidence of exceptional ability and achievement: demonstrated through academic, professional, research, competition, entrepreneurship, or other accomplishments The starting annual base salary range is $200,000 – $350,000 for new graduates.

Principal Consultant – Non-Financial Risk (Enterprise Risk) Location: London (Hybrid) | Practice Area: Finance, Risk, Regulatory & Financial Crime | Type: Permanent Lead enterprise-wide risk transformation and shape the future of non-financial risk The Role Capco is seeking experienced Principal Consultants with deep expertise in Non-Financial Risk to join our growing Finance, Risk, Regulatory & Financial Crime (FRRF) capability. In this senior role, you'll lead complex client engagements, advise senior stakeholders, and play a key role in shaping and delivering enterprise and operational risk transformation initiatives. Acting as a trusted advisor, you'll contribute to capability growth, proposition development, and team leadership while leveraging approved AI tools and AI-enabled ways of working to enhance analysis, improve delivery, and strengthen decision-making through responsible AI practices and appropriate human oversight. What You'll Do Lead enterprise and operational risk transformation programmes, helping clients strengthen governance, operating models, controls, and risk frameworks while identifying opportunities to leverage AI-enabled workflows and automation. Oversee trade surveillance and market abuse initiatives, optimising detection scenarios, controls, and monitoring capabilities using data-driven insights and responsible AI techniques where appropriate. Advise senior stakeholders on regulatory expectations and translate complex requirements into practical, strategic solutions that improve enterprise risk management and operational resilience. Apply and oversee AI-enabled analytics and model tuning techniques to enhance risk monitoring, alert calibration, and false positive reduction while ensuring appropriate governance, validation, and human oversight. Build trusted relationships with senior client stakeholders while contributing to business development, proposition development, capability growth, and thought leadership across the Non-Fin

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Quality Analyst, you will support the Quality Manager and the broader team in maintaining quality controls, executing calibration reviews, and ensuring smooth auditing operations with our vendor partners. You will play a crucial role in validating audit accuracy, analysing performance trends, and identifying grading discrepancies, helping to safeguard platform integrity and streamline vendor quality processes. You Will: Assist in executing regular quality compliance reviews and operational audits to ensure vendors adhere to established grading rubrics. Conduct daily audits of vendor customer service and moderation audits to verify accuracy and policy alignment. Gather, format, and maintain quality performance metrics and audit data to highlight recurring errors or vendor grading drift. Support the Lead in coordinating with Moderation, Customer Support, and Global Scaled Operations teams to resolve quality disputes. Participate in calibration sessions to ensure consistent interpretation of trust and safety policies across all vendor sites. Help test and implement new quality automation tools or auditing platforms introduced by the technical and leadership teams. You Have: 3-5 years of e

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 As the RF antenna engineer, you will be responsible for the end-to-end wireless design for our first-generation consumer wearable/device. You aren't just placing components; you are architecting a complex ecosystem of Cellular, Wi-Fi, BT, GNSS, NFC, and UWB radios within an extremely tight physical envelope. Your mission is to deliver optimal wireless functionality for the users. Responsibilities Architect the multi-radio systems, ensuring coexistence and optimal performance across a wide spectrum (sub-GHz to 8GHz+). Design and simulate custom, miniaturized antennas (LDS, FPC, or metal frame) that thrive in high-density environments. Partner with Industrial Design (ID) and Mechanical Engineering (ME) to find the "sweet spot" between aesthetic beauty and RF transparency. Develop RF strategies that prioritize ultra-low power consumption for battery-constrained performance. Own the product through EVT, DVT, and PVT phases, managing factory calibration, OTA testing, and global regulatory certifications (FCC/CE/PTCRB/GCF). Lead engagements with chipset vendors and antenna fabricators to push the limits of what is commercially possible. Requirements 10+ years in RF/Antenna design, with at least 2 full lifecycles leading a high-volum

Who We Are Nuro believes self-driving vehicles are the most immediate and profound opportunity for AI to drive positive change in the physical world. Safer streets, more time for what matters, and easier access to the world around us, that’s why we’re building a universal autonomy platform: self-driving for all roads and all rides. Founded in 2016, Nuro is a physical AI company developing Level 4 autonomous driving technology for a wide range of vehicles, use cases, and markets. Powered by the Nuro Driver™, our universal autonomy platform enables the global mobility ecosystem to deploy autonomy at scale, from robotaxis and logistics fleets to personal vehicles. With years of real-world deployment experience and a flexible, partner-led business model, Nuro is working toward a future where millions of autonomous vehicles powered by our technology help make everyday life safer, easier, and more connected. Nuro has raised over $2B in capital from Uber, NVIDIA, Google, Softbank, Fidelity, T. Rowe Price, and other leading investors. About the Role We’re looking for an Autonomy Engineer focused on onboard autonomy—the software that runs on the robot/vehicle/embedded computer and makes real-time decisions using onboard sensors and compute. You’ll build and ship reliable autonomy features that operate under tight latency, compute, and safety constraints in the real world. What You’ll Do Develop, integrate, and deploy onboard autonomy behaviors (e.g., navigation, obstacle avoidance, lane/route following, docking, interaction behaviors). Implement and maintain real-time decision-making components: behavior planning, state machines/behavior trees, local planning, and control interfaces. Build robust sensor-driven autonomy pipelines on-device (camera, lidar, radar, IMU, wheel odometry, GNSS), including synchronization, calibration hooks, and fault handling. Optimize autonomy performance for latency, CPU/GPU usage, memory, and power on embedded compute (e.g., NVIDIA Jetson,

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 Design, develop, and debug real-time embedded firmware for IoT systems, including gateways, lighting control, and environmental monitoring and control solutions. Maintain, optimize, and improve firmware for existing RTOS-based devices. Collaborate cross-functionally with BSP, HW, ID, Backend, Mobile, FE, PM, and PA teams to deliver high-quality products. Contribute to system-level architecture decisions for multi-module communication Document software architecture, tuning methods, and test results. Perform code reviews, ensuring best practices in coding standards. Participate in troubleshooting and root-cause analysis for firmware issues. Collaborate with QA and manufacturing teams for production firmware validation, factory firmware, and calibration procedures. Requirement (Must-Haves) Strong knowledge of networking fundamentals and protocols like TCP/IP (IPv4 and IPv6), socket programming, and higher-level protocols such as HTTP, WebSockets, or MQTT used in IoT systems. Experience developing firmware in a Real-Time Operating System (RTOS) environment (such as FreeRTOS or Zephyr). Proficient in C/C++ programming in embedded environments with RTOS. Understanding of memory management, interrupt handling, and power management in constrained systems. Familiarity with Git version control. A team player, who is self-m