Technical Lead Backend Jobs

HackerRank helps companies like NVIDIA, Amazon, and Microsoft hire and upskill the next generation of developers based on skills, not pedigree. Our platform is trusted by over 2,500 of the world’s most innovative companies to build strong engineering teams ready for what’s next. Software has entered an era where humans and AI build side by side. As this shift accelerates, the definition of strong technical talent is changing. We give companies better ways to identify and invest in next-generation skills. People at HackerRank care deeply about the impact of their work and sweat the small details so our customers can be wildly successful with products they genuinely love to use. We move with urgency and believe great outcomes come from high standards. About the role Hiring is one of the most consequential decisions a company makes. 3,000+ enterprises rely on HackerRank to get it right. We are now reinventing how that works for the agentic era. The ML systems that power this platform are not auxiliary features. They are the product. Open Problems The agentic era is reshaping every layer of the hiring stack. These are some of the core problems you'll be working across, none of them fully solved. Chakra: Building an autonomous AI interviewer that conducts, adapts to, and evaluates technical interviews end to end. Integrity: Detecting fraud and suspicious behavior across multiple signal types. The ways candidates game assessments change frequently, and the models need to keep up. Evaluation: Measuring technical skill in a world where AI writes the code. The old proxies no longer hold and the new ones have not been defined yet. Your focus will shift across these depending on where the highest-leverage work is at any given time. What you will do Design and ship production ML systems across Chakra, integrity, and evaluation domains. Own the full ML lifecycle: problem framing, data strategy, experimentation, deployment, and iteration. Build evaluation infrastructure and bench

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Tech Recruitment Business Partner We are seeking an experienced Tech Recruitment Business Partner for 6 months to join our Global Talent Acquisition team and drive the growth of our Tech teams for the EMEA region. At our company, we empower you to implement your ideas, take ownership of your career, and continuously learn. You'll experience a fast-paced, open-minded work environment that fosters innovation and collaboration. As a Tech Recruitment Business Partner, you will collaborate closely with our hiring teams to identify, attract, and hire top Business talent, playing a pivotal role in shaping the future of our growing organization. What you'll do Partner strategically with global tech hiring teams to define hiring needs and develop comprehensive recruiting strategies Source, select, and manage the end-to-end recruitment process with a strong focus on candidate experience and hiring top talent Engage top talent through creative sourcing techniques, cultivate strong connections with candidates and ensure a positive hiring experience Stay ahead and well versed with industry trends to enhance sourcing strategies while fostering an inclusive hiring process that values diverse perspectives Partner with stakeholders to make data-driven hiring decisions and supporting smooth onboarding and integration of new hires Contribu

Staff Software Engineer - Platform Location: Soho, NYC / Remote Department: Engineering The Role We’re looking for a Staff Software Engineer to help grow and build the core platform that powers our Flowcode 2 application at scale. This role sits at the intersection of architecture, leadership, and pragmatic execution with a focus on creating and augmenting reliable, scalable, and extensible services and applications. You’ll operate as a technical leader with in our Platform pod, growing platform capabilities, building new features and problem solving in a dynamic and challenging technical environment.. While this is a hands-on role, it requires a strong bias toward backend systems, distributed architecture and deep technical leadership. We value the ability to guide teams toward pragmatic, high-impact solutions. This role is ideal for an engineer who values simplicity, correctness, and pragmatism, and who can balance long-term platform investments with immediate business needs. What You’ll Do Own critical systems end-to-end, including design, implementation and deployment, Hands on designing, building, and maintaining scalable features across a modern front-end framework and backend services. Architect for growth — help drive your pods’s technical roadmap and shepherd established engineering best practices. Collaborate across teams with product, design, and data to deliver measure, deliver and grows features quickly and iteratively. Mentor and guide senior engineers, raising the bar for technical execution and system design across teams. Balance ideal engineering with the realities of speed, customer needs, and startup resource constraints. Drive improvements in observability, performance, and incident response Advocate for pragmatic solutions, solving the right problems with the appropriate level of complexity. What We’re Looking For 8+ years of experience building and operating production-grade systems, with a strong backend focus. Deep expertise in building

Senior Fullstack Software Engineer Location: Soho, NYC / Hybrid (an in-person interview may be required) Department: Engineering The Role We’re looking for a Senior Fullstack Software Engineer to help architect, build, and scale the next generation of our Flowcode 2 platform and consumer experiences. You will join our engineering team with a focus on creating amazing end user hub and landing page experiences that are dynamic and engaging, as well as the platform and management capabilities for creators on the platform. You’ll work across the stack — from contributing to backend services to building out dynamic end to end landing pages. Though this is a full stack position, we are looking for someone that has deep backend experience as well. As one of the senior engineers on a small but highly capable team, you’ll own medium to large sized features, drive technical execution, contribute to a delivery focused environment, and mentor others. You’ll balance hands-on engineering with architectural thinking, helping us move fast while maintaining reliability, performance, and code quality. This is an ideal role for a problem-solver who values simplicity over complexity, enjoys building dynamic and interactive applications and approaches engineering with pragmatism and curiosity. What You’ll Do Design, build, and maintain scalable features across a modern front-end framework and backend services. With support, own key features end-to-end, from data design to user-facing experiences. Architect for growth — help drive your pods’s technical roadmap and shepherd established engineering best practices. Collaborate across teams with product, design, and data to deliver measure, deliver and grows features quickly and iteratively. Write clean, reliable, and maintainable code, with strong attention to performance, best practices and developer experience. Mentor engineers and help elevate technical execution across you pod. Stay pragmatic — balance ideal engineering with the

As a Senior Product Manager for Serverless at Datadog, you will define and deliver products that help developers monitor and operate serverless applications at scale. You’ll own the strategy and execution for Datadog’s AWS Serverless observability offering, building experiences that provide visibility into distributed systems and simplify debugging and operations. This role sits at the intersection of cloud infrastructure, developer experience, and AI-powered workflows, and is ideal for a PM who thrives in highly technical product areas. You will work cross-functionally and with external partners to shape how customers build and run modern serverless applications. 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 and drive the roadmap for Datadog’s AWS Serverless observability products, including Lambda, Fargate, and Step Functions Define how developers monitor, debug, and operate serverless systems across distributed environments Partner with engineering and design to deliver end-to-end product capabilities from concept through launch and iteration Collaborate with AWS product teams to align roadmaps and deliver joint solutions for shared customers Engage with customers to understand serverless adoption patterns and validate product direction Define and track success metrics such as adoption, usage, and impact on developer workflows Who You Are: 5+ years of product management experience building technical products in areas such as cloud infrastructure, developer platforms, or observability Strong understanding of distributed systems, cloud-native architectures, and modern application development practices Familiarity with serverless technologies, containers, Kubernetes, or microservices environments Comfortable working closely with engineers and discu

Truveta is the world’s first health provider led data platform with a vision of Saving Lives with Data. Our mission is to enable researchers to find cures faster, empower every clinician to be an expert, and help families make the most informed decisions about their care. Achieving Truveta’ s ambitious vision requires an incredible team of talented and inspired people with a special combination of health, software and big data experience who share our company values. Truveta was born in the Pacific Northwest in the USA and has employees who live across the country. As we expand our global footprint with a new presence in Hyderabad, India, we’re building a world-class team to help us scale this mission and Clinical Intelligence and AI Evaluation is at the heart of everything we do. This job requires daily onsite work at our headquarters in Hyderabad, India. Who We Need Truveta is rapidly building a talented and diverse team to tackle complex health and technical challenges. Beyond core capabilities, we are seeking problem solvers, passionate and collaborative teammates, and those willing to roll up their sleeves while making a difference. If you are interested in the opportunity to pursue purposeful work, join a mission-driven team, and build a rewarding career while having fun, Truveta may be the perfect fit for you. This Opportunity At Truveta, we believe that high data quality will play a critical role in accomplishing our mission towards saving lives with data. An important component of this work is data normalization in which the medical terminology linking, and terminology management are essential in building deep intelligence empowering the new generation of clinical research. We are looking for a full-time Clinical Terminologist who will help to standardize the data sourced from different health systems. The responsibilities include identifying, creating, or validating mapping between medical terms from various healthcare system to standardized Terminologies

About the team The AI Deployment Engineering team works closely with frontier startups. We are trusted advisors to, and thought partners with, startups to ensure that OpenAI’s technology is deployed safely and effectively, whilst also partnering with engineering, research, and product to turn those insights into evaluation systems, product improvements, and better model behavior. This team sits at the intersection of customer reality and model quality. We combine hands-on technical depth with strong product judgment, helping translate complex, high-value use cases into clear signals that can improve both the customer experience and the underlying systems. About the role We are seeking a technically proficient, product-minded engineer to help push the frontier of advanced AI with our strategic startup customers. You'll work with some of the most exciting AI startups in the world, helping them optimize their own systems and turning those learnings into durable improvements across OpenAI’s research and products. You will partner deeply on complex workflows, identify the gaps that matter, and help transform those gaps into reproducible evaluations, technical insights - helping shape OpenAI's research and product direction. This role is well suited to engineers who are equally comfortable debugging a workflow, iterating on prompts or agents, designing evaluations, and collaborating across research and product. You should be excited by ambiguous, high-impact problems and motivated by the opportunity to shape how advanced AI systems improve in practice. This role is based in London. We use a hybrid work model of 3 days in the office per week. We offer relocation assistance. In this role, you will: Work directly with strategic startup customers to understand critical workflows, uncover failure modes, and identify high-impact opportunities for improvement. Prototype and iterate on prompts, agents, and workflow designs to better understand system behavior and unlock customer

About the team The AI Deployment Engineering team works closely with frontier startups. We are trusted advisors to, and thought partners with, startups to ensure that OpenAI’s technology is deployed safely and effectively, whilst also partnering with engineering, research, and product to turn those insights into evaluation systems, product improvements, and better model behavior. This team sits at the intersection of customer reality and model quality. We combine hands-on technical depth with strong product judgment, helping translate complex, high-value use cases into clear signals that can improve both the customer experience and the underlying systems. This role is based in Paris. We use a hybrid work model of 3 days in the office per week. We offer relocation assistance. We require fluency in French for this role. About the role We are seeking a technically proficient, product-minded engineer to help push the frontier of advanced AI with our strategic startup customers. You'll work with some of the most exciting AI startups in the world, helping them optimize their own systems and turning those learnings into durable improvements across OpenAI’s research and products. You will partner deeply on complex workflows, identify the gaps that matter, and help transform those gaps into reproducible evaluations, technical insights - helping shape OpenAI's research and product direction. This role is well suited to engineers who are equally comfortable debugging a workflow, iterating on prompts or agents, designing evaluations, and collaborating across research and product. You should be excited by ambiguous, high-impact problems and motivated by the opportunity to shape how advanced AI systems improve in practice. In this role, you will: Work directly with strategic startup customers to understand critical workflows, uncover failure modes, and identify high-impact opportunities for improvement. Prototype and iterate on prompts, agents, and workflow designs to better unde

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. The Security organization at Roblox is responsible for designing and engineering secure systems from inception through production. We define security standards, build scalable controls, and enable product and infrastructure teams to operate securely by default. The Application Security team partners closely with engineering teams early in the development lifecycle to drive secure architectures, establish standards, and deliver scalable security solutions. As a Senior Security Software Engineer - Application Security , you will be a hands-on engineer who designs, builds, and ships security solutions that integrate directly into developer workflows and platforms. You will play a key role in scaling application security through automation, CI/CD integrations, secure libraries, and reusable patterns. In this role, you will help define how security is embedded across the software development lifecycle at Roblox, balancing deep technical work (threat modeling, code review, penetration testing) with systemic solutions that reduce risk at scale. You will also participate in AppSec on-call rotations and contribute to security tooling and platform evolution. You will: Integrate security into CI/CD pi

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. The Creator Content Platform Team provides a secure, scalable, and extensible foundation for ingestion, processing, storing, managing, and serving user content. As a Principal Software Engineer (Backend, Distributed Systems), you will design and build backend services to help game creators reach the broadest audience possible. You will help us build & scale large distributed systems, data processing and analysis pipelines, an access control system, Open Cloud APIs all of which are central for all content created in Roblox. \ You Will: Solve on a variety of unique technical challenges Have the independence, opportunity and the end-to-end responsibility to design, build, test and deploy services within the Roblox ecosystem Guide the future technical direction of the team and have impact on engineering Be a technical bar-raiser for high code quality, architectural designs, and long-term approaches Mentor and develop fellow engineers on the team Design systems and services that are scalable and resilient Collaborate with passionate, Engineers, Product Managers and other Roblox team members, cross-functionally You have: Experience: You have 13+ years of experience working on backend, d

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 Principal Engineer in the Builder Tools team, you’ll work on interactive, developer-facing tools and reusable tooling frameworks for Roblox Studio, a collaborative IDE for making Roblox games. The Builder Tools team is in charge of Roblox Studio’s content making features, from 3D draggers to world-class character animation tools, tooling for making terrain for huge worlds, in-game UI authoring tools, and many more. In this role, you will have a direct impact on how streamlined and enjoyable making games on Roblox is for hundreds of thousands developers worldwide! You will: Work on various interactive tools for Roblox game developers Define architecture and implement reusable tooling frameworks Work with UX designers and Product Manager to come up with most optimal and ergonomic solutions Design and execute on the architecture and technical direction that will be the future of our application Own and deliver complex technical projects from the planning stage through execution Work cross functionally, across teams and technology platforms Mentor team members helping them improve their professional skills and expertise Design, develop, and implement technological p

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 Support Escalations Specialist, you will be an early member of our internal high-stakes response team. Internal Escalations are a critical component of what we do in Support. Our community of internal stakeholders continuously advocate for our customers, and this team is a center point of that. We are building on all the wonderful work being done today, and adding this critical internal support function to bring expertise and ensure the highest level quality and execution. This isn't your standard customer support role. You will handle the most sensitive and high-risk cases that hit our ecosystem—cases that often have direct visibility from our executive leadership, legal, and product teams. You will be responsible for not only resolving these complex issues but also documenting the "how" and "why" to help us build a proactive, world-class internal operation. What You’ll Do Own and resolve complex escalations involving legal, financial, and executive-level sensitivities with a focus on empathy and extreme accuracy. Act as a bridge and support conduit for our current vendor partners and our growing internal team, helping to document processes and workflows. You won't just complete ticke

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. Role Summary The Principal Engineer provides technical leadership for Cell Film process development, defining technical direction, fostering innovation, and ensuring successful integration of new processes into manufacturing to enable next-generation NAND device scaling. Defines and implements technical strategy; leads cross-functional teams; owns end-to-end module development with manufacturability/scalability readiness. Resolves complex technical challenges with business impact and drives transfer and ramp readiness into high-volume manufacturing . Main Responsibilities Strategy, Roadmap & Technical Direction Define and implement technical strategy for cell film process development aligned to business and technology objectives . Identify emerging trends/risks/opportunities and recommend future investments/initiatives .

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 / Role Summary The Principal Engineer provides technical leadership for NAND Advanced Thin Films, defining technical direction and driving the strategic advancement and integration of sophisticated structural and electrical film processes into manufacturing. Success requires proven leadership in thin film module development, strong cross-functional influence, deep characterization and correlation capability, and strong judgment in technical tradeoffs for manufacturability, scaling, yield, and reliability. Main Responsibilities Define and implement technical strategy for structural and electrical film process development aligned to business and technology objectives . Lead multi-functional teams to develop, integrate, and scale thin film processes for advanced NAND structures/devices. Oversee end-to-end development of process modules with

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 / Role Summary The Staff Engineer leads module ‑ level photolithography process development for advanced NAND technology nodes. This role owns process robustness, manufacturability, and readiness for technology transfer. Success requires strong technical depth, execution leadership, and the ability to translate device requirements into reliable, scalable process solutions. Main Responsibilities Lead development, optimization, and troubleshooting of photolithography processes to meet yield, quality, and performance requirements. Translate device and integration requirements into robust process flows, specifications, and control strategies. Perform and own material evaluations, OPC/layout development, process window analysis, and overlay optimization. Design and implement advanced process control methodologies using SPC, DOE,