Engineer Senior Jobs

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com . The Reddit Consumer Engineering organization builds and scales the products that Redditors use directly to discover content, participate in communities, and connect with others. Sitting at the intersection of large-scale distributed systems and core user journeys, Product Backend Engineers in Consumer Engineering partner directly with Product Managers, Designers, Data Scientists, ML Engineers, and Frontend Engineers to build, experiment with, and scale features that power how hundreds of millions of users discover, join, navigate, and engage with Reddit. This centralized role hires across several high-impact consumer teams, including: Core Product & Feeds: Home Experience, Recommendations & Content Discovery, Content Contribution Community & Presence: Reddit Pro, Youth Experience & Teen Safety, Creator Tools Growth & Engagement: Authentication, Notifications, Social Sharing, SEO, Onboarding. Monetization & Conversion: Paid User Acquisition, Conversion Funnel Optimization Identity & Security: Account Management, Trust & Safety What You’ll Do Cross-Functional Product Architecture: Partner closely with Product Management, Product Design, Data Science, and Client Engineers (iOS/Android/Web) to translate business and user needs into reliable, low-latency technical solutions. End-to-End Delivery: Own the full software lifecycle for major product initiatives from technical design docs and API contracts to development, testing, rollout, and observability. Metrics & Experimentation-Led Enginee

Healthcare is complex. We’re here to change that. RVO Health is a health technology company on a mission to make health easier to navigate, more accessible, and more affordable for everyone. Here, you'll help over 40 million people every month, with a team that genuinely cares about the work and each other. AT A GLANCE The Software Engineer is an individual contributor role on one of our Healthgrades development teams, helping build and modernize the platforms behind Healthgrades' provider search and content experiences. You'll write code, ship features, and help move our widget platform forward, all while working closely with a collaborative, cross-functional squad. Where You'll Be Location: Denver, CO | Hybrid We believe great collaboration happens when we're together, solving problems, learning from each other, and connecting as a team. That's why we’re in our offices Tuesday through Thursday each week. You are welcome to work remotely Mondays and Fridays if you wish. Office address: 1801 California St. Denver, CO 80202 What You’ll Do Design, build, and ship features across our widget platform and content systems, working from requirements through to production. Partner with your Product Manager, Technical Project Manager, and fellow engineers to scope work, estimate effort, and plan sprints. Write clean, well-tested code and participate actively in code review, both giving and receiving feedback. Help modernize legacy code as the team migrates toward a current React/TypeScript stack. Debug and resolve issues across the stack, supporting production systems as part of the team's on-call rotation. Collaborate with QA engineers on testing strategy and help build toward stronger automated test coverage. Use AI tools to speed up your day-to-day development work. Contribute to a healthy team culture: clear communication, constructive code review, and shared ownership of quality. What We’re Looking For Required: Bachelor's degree in computer science, software engi

About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. Performance Engineer, Inference Engine About the Role Anthropic's inference engine is the software between the accelerator kernels and the routing layer. It manages the entire token path in between: batching requests, laying the model out across chips, managing memory for weights and activations, coordinating every forward pass, and managing model state across requests. Built in-house, it runs on all of our accelerator platforms, serving Claude to millions of users and running our research workloads. You will work on building and optimizing this system at Anthropic scale: improving throughput, cost, reliability, and latency across all accelerator and cloud platforms. You are intimately familiar with the hardware and bandwidth numbers (FLOPs, HBM, PCIe, RDMA, network links, etc.) and can model a problem quickly: where the time and bytes go, and what sets the bound. The role is deeply technical and high-impact, and suits engineers who enjoy working across accelerator programming, high-performance systems that seamlessly coordinate between host and device, and large-scale distributed systems. Familiarity with the transformer architecture is a plus. Some example recurring themes: Keep device utilization high. Accelerators should never be waiting due to other overheads. Reuse instead of recompute. Keep model state cached and reuse it whenever that is cheaper than computing it again. Measure, model, then change. We build the observability to see where the gaps are, model the impact of potential improvements, deploy them, and go around again, with Claude speeding up every turn of that loop. Tokens you can trust. Ensuring model quality matter

About the Team Help us build the world's most reliable, on-demand logistics engine for last-mile delivery! We're bringing on experienced engineers to help us create and maintain a 24x7, no downtime, global infrastructure system that powers DoorDash’s three-sided marketplace of consumers, merchants, and dashers. About the Role We also offer “cloud solutions engineering”: we unblock teams across DoorDash with novel or complex cloud needs, from multi-cloud deployments and cross-cloud credential vending to multi-region sFTP. You will partner directly with teams across the company to take a need from an ambiguous request to production, and mature the most common ones into platform products that can be adopted widely. This role sits at the intersection of cloud infrastructure, security, and developer experience. It includes designing, building, and operating systems that must be reliable, secure, easy-to-use, and cost-efficient. You will report to the Engineering Manager of the Cloud Infrastructure team within the Infrastructure organization. This role is hybrid working from our New York City engineering hub. You’re excited about this opportunity because you will… Design and build the foundational cloud platform (account vending, IAM, cloud networking primitives, quotas, infrastructure as code) that every engineering team at DoorDash builds on top of Own the paved path for cloud at DoorDash: make the secure, cost-efficient way the easy way through self-service tooling Partner with product and platform teams to unblock complex or novel cloud use-cases, and turn the recurring ones into platform products Drive cloud-wide initiatives such as multi-cloud, unifying cloud foundations across DoorDash, Deliveroo, and Wolt, cost efficiency, and security posture Set technical direction for the team, mentor engineers, and influence cloud architecture decisions across the company Find ways to improve the team’s productivity and operational capabilities through the use of automation, A

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. We're looking for an outstanding engineer to join our Engine Infrastructure Team. As an engineer on our Systems team, you will have an immediate impact on the building blocks of Roblox itself. The software you build is a very large application that empowers our global community of 2M+ developers to push the boundaries of interactive gaming. Your work will touch every part of the engine, from threading and memory management to physics and scripting. If you enjoy working on C++ software and have a passion for working on high-performance real-time applications alongside experienced and passionate engineers, you will be right at home on our growing Game Engine team. You will: Develop engine code in C++ for sub-systems critical to the Roblox game engine Work on sub-systems that handle data syncing between server and client, game-aware data streaming, and harmonizing resource usage to ensure gameplay works on various devices with varying CPU and memory capabilities Design systems that enable Roblox to scale its game server fleet to millions of servers across the world. You Have: 3 + years of industry experience and you’ve designed and led implementation on highly scalable and reliable distr

Replit is the agentic software creation platform that enables anyone to build applications using natural language. With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation. About the role: As a New Grad Software Engineer, you'll join a team of exceptional builders working on products that are reshaping how the world creates software. You'll have the opportunity to work on everything from our AI-powered development platform to the distributed systems that enable real-time collaboration for millions of developers. This is a chance to define your career while defining the future of software development. You'll work on problems that matter, with the autonomy to drive solutions and the support to grow into a technical leader. What you will build: Product features that delight users and make it possible for anybody to create software AI coding agent that understands intent and generates production-ready applications Cloud infrastructure that provides instant, powerful development environments at global scale Platform features that enable one click deployments and scale to millions of users Required skills and experience: Recent graduate (2027) with a degree in Computer Science, Computer Engineering, or related field Strong programming skills in a modern language (JavaScript/TypeScript, Python, Go, Rust) Full-stack capabilities with experience in React, Node.js, and database technologies Growth orientation - eager to learn new technologies and take on increasing responsibility Collaborative spirit - you work well in cross-functional teams and value diverse perspectives What we value : Problem-solving mindset: Ability to approach complex operational challenges systematically and devise effective solutions Self-directed and autonomous: Capable of working independently while collaborating effectively with cross-functional teams Strong communication skills: Ability to explain complex technical conce

About the Team OpenAI, in partnership with our capital and technology partners, is building a global network of advanced datacenters to support the most demanding AI workloads. The Industrial Compute team ensures that all datacenter systems are manufactured, delivered, and commissioned to the highest standards of quality, reliability, and performance. We work closely with manufacturing partners, engineering teams, and operations staff to ensure that every component is delivered ready for installation, startup, and long-term service. About the Role We are seeking an experienced Quality Engineer (QE) to drive Product and Site Quality initiatives across OpenAI’s infrastructure ecosystem. In this role, you will establish, implement, and manage a comprehensive, quality-focused program across our global supply chain network, ensuring excellence from design through deployment. You will be responsible for end-to-end quality of finished products, as well as maintaining and elevating manufacturing site quality standards. Working cross-functionally with Design (NPI) and Engineering teams, you will help achieve First Pass Yield (FPY), quality, and reliability targets. This includes leading site and fixture validation efforts, driving yield improvement initiatives (Yield Bridge, CPI), and implementing robust corrective and preventive actions (CAPA) to resolve issues at their root cause. In addition, you will play a key role in supplier quality management, assessing and qualifying new vendors, overseeing ongoing supplier performance, and ensuring readiness for future business awards. You will lead vendor audits, monitor key performance metrics, and coordinate corrective actions to ensure predictable delivery schedules, reduced operational risk, and high system reliability. By partnering closely with external suppliers and internal Engineering and Operations stakeholders, you will help ensure OpenAI’s datacenter infrastructure is delivered on time, meets the highest quality standa

Datadog Sales Engineers help qualify and close opportunities with customers and partners by providing technical expertise through sales presentations, product demonstrations, and supporting technical evaluations (POCs). As a Sales Engineer 2, you will independently own technical engagements throughout the sales cycle, partnering closely with Customer Success Managers to align customer business objectives with Datadog's platform. You will also collaborate across Engineering, Support, Product, and various other cross-functional teams to resolve customer concerns, advocate for customer needs, and serve as a trusted technical advisor throughout the evaluation process. If you want to join a friendly, passionate team with limitless potential, we'd love to meet you! 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: Partner with the Customer Success team to articulate Datadog's value proposition, vision, and technical strategy throughout the sales cycle. Deliver tailored product demonstrations and technical presentations that map customer challenges to Datadog solutions. Assist with technical discovery by identifying customer business objectives, technical challenges, and success criteria. Own technical evaluations (POCs) from kickoff through successful completion, proactively driving customer engagement and removing technical blockers. Continually expand your expertise across Datadog's platform while building competitive knowledge and technical credibility. Develop trusted relationships with customer technical stakeholders, communicating business value to buying teams and helping position accounts for a successful long-term partnership that sets the stage for future growth. Contribute to team success by sharing best practices, mentoring newer Sales Engineers, and

At United Integrated Services (UIS), we build more than facilities—we build the infrastructure that enables technologies to shape the future. As a global engineering and construction company specializing in the semiconductor industry, UIS brings together talented people, technical expertise, and innovative solutions to deliver the most complex and critical projects in the industry. Our U.S. team is helping build the next generation of advanced semiconductor manufacturing facilities, working alongside some of the world's leading technology companies. Our work requires precision, collaboration, accountability, and a commitment to doing things the right way—from the planning and engineering stages through construction and project completion. As UIS continues to grow, we are building more than projects. We are building teams, developing careers, and creating opportunities for talented professionals to make a meaningful impact. If you are looking for an opportunity to work on challenging projects, grow your career, and be part of something bigger, we invite you to build the future with UIS. WHAT WE OFFER Comprehensive Benefits – Medical, Dental, Vision, Short-Term Disability (STD), Long-Term Disability (LTD), and Life Insurance provided at no cost to employees. Competitive Compensation – Competitive salaries and opportunities for performance-based incentives. Career Growth – Opportunities to develop your skills, take on new challenges, and grow with a rapidly expanding organization, supported by education reimbursement for eligible employees pursuing continued learning and professional development. Meaningful Work – The opportunity to contribute to some of the most advanced semiconductor construction projects in the country. Collaborative Environment – Work alongside experienced professionals across engineering, construction, project management, safety, procurement, and operations. Summary: We are searching for an Electrical Engineer to join our team

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Location: London, Lisbon, or Austin - (Hybrid) Join the team helping shape the future of the Internet. We’re building high-performance systems that handle a quarter of the Internet’s traffic . Our work influences open standards (like QUIC, MASQUE, and ECH), involves close collaboration with the IETF, and pushes the boundaries of what's possible in networking and security. You don’t need to be an HTTP or cryptography expert to join — we’re looking for ex

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 Carrot Ads is Instacart's publisher advertising platform and one of its fastest-growing businesses. We power ads for enterprise retail partners like Uber Eats, Hy-Vee, and Thrive Market on their own storefronts, spanning Storefront, Storefront Pro, and the Connect / Carrot Ads API. As the first vertical team inside a historically horizontal Ads org, our scope is unusually broad: we own the publisher customer end to end while building on top of shared serving, measurement, and quality systems. Retail media is consolidating, and Instacart is positioned to win on cross-retailer reach. Our goal is to become the premier grocery ads ecosystem for partners and advertisers — and getting there means turning an early externalization into an enterprise-grade platform that the world's most sophisticated retailers trust with their own storefronts. That is the pr

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE Software Engineer plays a key role in the design, development/configuration, unit testing, installation, and ongoing maintenance of Zinnia software platforms. Works with stakeholders to develop solutions and/or products that fulfill the needs of Zinnia’s internal stakeholders and clients. Those solutions and/or products help Zinnia and Zinnia clients to be more efficient and provide better service to end customers. Software Engineer interacts directly with project managers and business stakeholders and may periodically interact directly with Zinnia’s clients. Will facilitate, architect, and enable junior team members by acting as a mentor for soft skills and/or technical subject matter experts. WHAT YOU’LL DO Work as part of a global, cross-functional team to develop innovative software for Zinnia’s stakeholders. Contribute to projects by creating well-designed, customized, testable, and efficient code for Life & Annuity Exchange platforms. Assist our teams in providing ongoing support, troubleshooting, improvements, or custom enhancements to existing Life & Annuity Exchange platforms. Flexibility to support the challenging development and delivery needs of Zinnia Collaborate with our global teams, internal stakeholders, and customers. Ability to work in a fast-paced environment, recognize and react to changing business needs and effectively prioritize tasks Must be self-motiva

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations Spain Responsibilities The Partner Engineer (PE) is a high-impact, strategic technical sales leader responsible for end-to-end technical lifecycle and enablement of the assigned partners, managing both pre-sales and post-sales engineering activities. In this role, you will act as the single technical point of contact as the trusted advisory for your assigned partners, driving technical validation during the sales cycle, archite

MongoDB Professional Services (PS) works with customers of all shapes and sizes, in all verticals, from tier-1 banks to small web startups, on a variety of exciting use cases. This role solves technically sophisticated problems, gains incredible cross-stack experience, works with top notch people in the business, networks with industry leaders, and sees new places - all in a day’s work! MongoDB consulting exists to support the development of our customers’ vision, accelerate customers’ time to value, and drive a multitude of customer adoption scenarios - from building new solutions to modernizing legacy applications or migrating to cloud. Our consulting solutions ensure that organizations get the best out of MongoDB. We are looking to speak to candidates who are based in Berlin for our hybrid working model. Our ideal candidate will have 2+ years of software development/consulting/support experience, preferably in a number of distinct industries/verticals Familiarity with enterprise-scale software architectures, application development methodologies, and software deployment and operations Competence in at least one of the following languages (in no particular order): Java, C++, C#, Python, Node.js (JavaScript), Ruby, Perl, Scala, Go Experience with databases such as MongoDB, Oracle, MS SQL Server, PostgreSQL Familiarity with Linux diagnostics and tuning; Windows tuning knowledge is a plus Excellent analytical, diagnostic, and problem-solving skills High motivation for a role that combines deep technical and customer-management dimensions Confidence speaking and presenting in a customer setting Fluency in both English and German languages. Position Expectations As a core member of the MongoDB PS team, you will: Contribute to customer implementations at any or all phases of the application lifecycle: portfolio assessment, application planning and design, deployment architectures, development and build, integration and release configuration, system testing, production o

Zafin is an AI platform company helping regulated institutions modernize how critical work is designed, governed, and delivered. Our technology enables organizations to move faster while maintaining the governance, accountability, and control required in highly regulated environments. Our portfolio includes Zafin AIOS , an agent orchestration platform for governed AI work; the Zafin Banking Platform , which helps banks modernize product, pricing, offers, billing, loyalty, and relationship management; and Zafin IO , an integration platform that connects data, systems, and workflows across complex enterprise environments. Headquartered in Toronto, Canada, Zafin partners with leading financial institutions across North America, Europe, the Middle East, Africa, and Asia-Pacific. As AI transforms the future of financial services, we're building the platforms that help regulated organizations adopt AI responsibly and at scale. QA Automation Engineer II What is the Opportunity? The QA Engineer II (Intermediate Level) is responsible for ensuring the quality and reliability of enterprise banking applications through a combination of manual and automated testing. The role involves validating backend processes, APIs, system integrations, and file-based data exchanges while ensuring end-to-end functionality, data integrity, and application performance. The engineer will collaborate closely with Developers, Business Analysts, Product Owners, and Data Engineers to deliver high-quality software solutions. What You Will Do Develop and maintain automation frameworks for web, API, backend, and integration testing. Execute functional, regression, integration, and end-to-end testing for enterprise banking applications. Perform API, database, backend, and event-driven system validation. Job Description | Confidential 2 Integrate automated test suites into CI/CD pipelines for continuous testing. Identify, troubleshoot, and track defects, working closely with Engineering and