Python Backend Engineer Jobs

About us Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands — including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank — to transform how they serve customers and grow their businesses. We are primarily an in-person company based in San Francisco, with growing offices across North America, Europe, and Asia. We are guided by a set of values that are at the core of our actions and define our culture: Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing Family along the way. These values are the foundation of our work, and we are committed to upholding them in everything we do. Our co-founders are Bret Taylor and Clay Bavor . Bret currently serves as Board Chair of OpenAI. Previously, he was co-CEO of Salesforce (which had acquired the company he founded, Quip) and CTO of Facebook. Bret was also one of Google's earliest product managers and co-creator of Google Maps. Before founding Sierra, Clay spent 18 years at Google, where he most recently led Google Labs. Earlier, he started and led Google’s AR/VR effort, Project Starline, and Google Lens. Before that, Clay led the product and design teams for Google Workspace. What you'll do Implement Go-to-Market software for our marketing, sales, and agent development teams Design and build the automated workflows, integrations, and AI-powered systems that turn signal into pipeline, across enrichment, scoring, routing, and outbound activation Own our enrichment infrastructure end-to-end: the pipelines that take a new signup, demo request, or event attendee list and return a fully enriched, scored, Salesforce-upserted record across Clay, ZoomInfo, Cognism, and LLM-powered sources Build AI agents and AI-powered internal tools that compound sales team output — account research, call summarization, RFP and security questionnaire response, proposal generation, and Slack-accessible agents that surface account intel on demand Build an

About Sentry Software runs the world and the pace is faster than ever. Sentry helps developers fix errors and performance issues before users notice, so teams can spend less time firefighting and more time building. Trusted by 200,000+ organizations, Sentry is today’s application monitoring standard and our team is building its AI-native future. About the role As a Senior Software Engineer on Sentry’s AI/ML team, you’ll be responsible for building the evaluation infrastructure that measures the accuracy, reliability, and real-world performance of our AI systems. This role is critical to ensuring that our debugging agents and AI-powered features behave correctly, safely, and predictably as they scale. You’ll design datasets, benchmarks, and test harnesses that turn ambiguous AI behavior into measurable signals, helping the team ship AI with confidence. In this role you will Design and build robust evaluation frameworks to measure accuracy, reliability, regressions, and edge cases in AI systems Create and curate high-quality datasets, golden test cases, and benchmarks grounded in real production data Build automated test harnesses and metrics pipelines to continuously evaluate models, prompts, and agentic workflows Partner closely with applied AI engineers and product leaders to define what “good” looks like and translate it into measurable criteria Own the evaluation lifecycle for major AI initiatives, from early experimentation through production monitoring You’ll love this job if you Care deeply about correctness, rigor, and measurement in AI systems Enjoy turning fuzzy product goals and model behavior into concrete tests and metrics Like building foundational infrastructure that unlocks faster iteration and higher confidence for the entire AI team Thrive in cross-functional environments and enjoy influencing model design through better evaluation Qualifications Minimum 5+ years of professional experience with a Bachelor’s degree in computer science, machine learni

Zoox is looking for a strategic leader to guide the Commercial Applications group within our Enterprise Applications Engineering organization. This role owns the enterprise platforms that power collaboration, service delivery, and workforce productivity across the company. You will lead a multi-disciplinary organization responsible for SaaS & self-service applications, enterprise collaboration tools, and the ServiceNow platform. As Zoox continues to scale, you’ll define the long-term vision for our enterprise software ecosystem, driving cloud modernization, automation, and the responsible adoption of AI to deliver secure, scalable, and intuitive employee experiences. In this role you will: Lead and develop a team of Team Leads and Senior Administrators across SaaS, collaboration, and ServiceNow platforms Define and execute the Commercial Applications roadmap, including Atlassian Cloud migration and ServiceNow platform evolution Drive operational maturity through engineering standards, SLAs, and proactive service management Champion self-service and workflow automation to reduce manual toil and improve employee experience Partner cross-functionally to govern SaaS procurement, security, and platform strategy at scale Qualifications: 7+ years of experience in Enterprise Applications or IT Engineering 4+ years of people management experience, ideally managing Team Leads or Managers Deep expertise in the Atlassian ecosystem, including Data Center to Cloud migrations Strong background in ServiceNow platform strategy, development, and integrations Proven ability to define and execute multi-year roadmaps for complex enterprise systems Bonus Qualifcations Experience integrating AI/ML or generative AI into enterprise platforms Strong knowledge of SaaS management (SSO, SCIM, CASB) and license infrastructure Certifications in ITIL, PMP, or Agile methodologies

A World-Changing Company Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role Product Reliability Engineers (PREs) are responsible for the health, performance, and stability of the services that power services at Palantir. PREs take ownership over the entire end-to-end cycle of service reliability, from responding to outages to improving codebases and building lasting solutions. You will tackle critical issues for key customers, introduce observability into complex systems, address tech debt in essential codebases, and inform strategic investments in core products. We are looking for engineers who enjoy deep-dive troubleshooting, feel strong ownership over the problems they encounter, and recognize the urgency of customer-facing outages. PREs spend the majority of their time on forward-looking product work, including but not limited to, infrastructure migrations, product contributions to improve stability and observability, and codebase enhancements that increase resilience. During periodic on-call shifts, we respond to automated alerts, investigate issues reported by customers, and share technical expertise with adjacent product teams. Whatever the technical issue or question about your service is, you'll play a central and critical role in resolving it, seeking not just a one-time fix, but a permanent solution. We provide new team members with an experienced mentor and a clear onboarding framework to set them up for success in the role. Core Responsibilities Continuously invest in documentation, metrics, monitors and other troubleshooting tools Participate in on-call rotations during business hours and occasional weekends. This is a challenging yet rewarding opportunity to help remediate the most pressing issues

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 The ML Infrastructure team builds large-scale compute, storage, and software infrastructure to support Cursor’s work building the world’s best agentic coding model. We’re looking for strong engineers who are interested in building high-performance infrastructure and the software to support it. This role works closely with ML researchers and engineers to enable their work through improvements to our training framework, systems reliability/performance, and developer experience. What you’ll do Collaborate with ML researchers to improve the throughput and reliability of training Work with OEMs, cloud service providers, and others to plan and build cutting-edge GPU infrastructure Improve the density and scalability of compute environments to enable increasingly large RL workloads Create software and systems to automate building, monitoring, and running GPU clusters Build workload scheduling and data movement systems to support Cursor’s growing training footprint You may be a fit if A strong background in systems and infrastructure-focused software engineering, particularly in Python, Typescript, Rust, and Golang Experience with distributed storage and networking infras

A World-Changing Company Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role Product Reliability Engineers (PREs) are responsible for the health, performance, and stability of the services that power services at Palantir. PREs take ownership over the entire end-to-end cycle of service reliability, from responding to outages to improving codebases and building lasting solutions. You will tackle critical issues for key customers, introduce observability into complex systems, address tech debt in essential codebases, and inform strategic investments in core products. We are looking for engineers who enjoy deep-dive troubleshooting, feel strong ownership over the problems they encounter, and recognize the urgency of customer-facing outages. PREs spend the majority of their time on forward-looking product work, including but not limited to, infrastructure migrations, product contributions to improve stability and observability, and codebase enhancements that increase resilience. During periodic on-call shifts, we respond to automated alerts, investigate issues reported by customers, and share technical expertise with adjacent product teams. Whatever the technical issue or question about your service is, you'll play a central and critical role in resolving it, seeking not just a one-time fix, but a permanent solution. We provide new team members with an experienced mentor and a clear onboarding framework to set them up for success in the role. Core Responsibilities Continuously invest in documentation, metrics, monitors and other troubleshooting tools Participate in on-call rotations during business hours and occasional weekends. This is a challenging yet rewarding opportunity to help remediate the most pressing issues

Fin is the AI Customer Agent company on a mission to help businesses provide perfect customer experiences. Our AI Agent Fin is the highest-performing AI Customer Agent on the market today, enabling businesses to deliver impeccable, always-on customer support across the customer journey – from service, to sales, to ecommerce. Powered by our own AI models, Fin resolves complex customer issues end-to-end across every channel, with minimal set-up and integration. Fin can also be combined with our natively integrated Intercom help desk for one single system that is designed to meet the needs of modern day support teams. Founded in 2011, Fin became one of the fastest growing companies and remains one of the largest private software companies in the world with nearly 30,000 global businesses using our products to transform their customer support. Driven by our core values, we push boundaries, build with speed and intensity, and relentlessly deliver incredible value to our customers. What's the opportunity? Over the past twelve months, we’ve seen rapidly growing demand for Software Engineers who thrive at the intersection of deep technical work, customer impact, and product strategy. As Fin's AI Agent for Customer Service, Fin, becomes mission-critical for our most strategic customers, we’re building a team of Forward Deployed Software Engineers to help bridge the gap between customer needs and product innovation. As a Forward Deployed Software Engineer, you’ll work hands-on with some of Fin's most strategic customers, partnering closely with our R&D and Go-to-Market teams to design and deliver high-impact solutions. You’ll go beyond implementation — helping shape product direction, influencing roadmap decisions, and ensuring Fin delivers real, measurable business outcomes in complex, real-world environments. If you’re excited by ownership, creativity, and solving ambiguous problems, and you want to work at the frontier of applied AI while collaborating with world

About the Team The AI Architect team partners with organizations to turn OpenAI's most capable models into meaningful, real-world impact. We work with customers across industries and digital-native businesses to identify where AI can create value, design secure and scalable solutions, and help those solutions move from early exploration into sustained production adoption. The team brings together technical strategy, customer partnership, and practical deployment expertise, working closely with Sales, Product, Engineering, Research, and specialist delivery teams. About the Role As an AI Architect, you will be the senior technical owner for a named portfolio of customers and the primary technical counterpart to their leadership teams. You will act as the “CTO of your book of business”, shaping each customer's AI strategy and guiding their journey from pre-sales discovery and solution evaluation through deployment, adoption, and measurable business impact. You will own the technical account plan across ChatGPT Enterprise, the OpenAI API, Codex, and other agentic AI solutions. In partnership with the Account Director, you will translate business priorities into a focused use-case portfolio, an actionable adoption roadmap, and a clear path to durable customer value and growth. The Account Director owns commercial strategy; you own the technical strategy, customer journey, and path to production value. You will remain accountable for the technical outcome while bringing in the right specialists across deployment, implementation, enablement, security, product, and partners to provide deeper expertise and execute work where needed. This role calls for strong industry fluency, sound architectural judgment, and the ability to move confidently between executive strategy and hands-on technical conversations. In this role, you will: Serve as the primary technical advisor and long-term technical relationship owner for a named portfolio of existing customers and pre-sales prospect

About the Team The AI Architect team partners with organizations to turn OpenAI's most capable models into meaningful, real-world impact. We work with customers across industries and digital-native businesses to identify where AI can create value, design secure and scalable solutions, and help those solutions move from early exploration into sustained production adoption. The team brings together technical strategy, customer partnership, and practical deployment expertise, working closely with Sales, Product, Engineering, Research, and specialist delivery teams. About the Role As an AI Architect, you will be the senior technical owner for a named portfolio of customers and the primary technical counterpart to their leadership teams. You will act as the “CTO of your book of business”, shaping each customer's AI strategy and guiding their journey from pre-sales discovery and solution evaluation through deployment, adoption, and measurable business impact. You will own the technical account plan across ChatGPT Enterprise, the OpenAI API, Codex, and other agentic AI solutions. In partnership with the Account Director, you will translate business priorities into a focused use-case portfolio, an actionable adoption roadmap, and a clear path to durable customer value and growth. The Account Director owns commercial strategy; you own the technical strategy, customer journey, and path to production value. You will remain accountable for the technical outcome while bringing in the right specialists across deployment, implementation, enablement, security, product, and partners to provide deeper expertise and execute work where needed. This role calls for strong industry fluency, sound architectural judgment, and the ability to move confidently between executive strategy and hands-on technical conversations. In this role, you will: Serve as the primary technical advisor and long-term technical relationship owner for a named portfolio of existing customers and pre-sales prospect

The Program Management Office (PMO) at Zoox is responsible for driving cross-functional program planning and execution at the highest level. We partner with leaders across vehicle development, software engineering, manufacturing, fleet operations, and business functions to deliver the major corporate milestones on the path to launch, and beyond. The quality of those decisions depends on how fast the right evidence reaches the right people — and that is what this role builds. As a Tooling contractor in PMO, you will build the internal web tools and dashboards that decisions get made on. Zoox generates an enormous amount of data — fleet and simulation logs, program and issue tracking, operational telemetry, map and route data — but very little of it arrives in a form a leader can act on. You will close that gap: pull from existing sources, model the data properly, and ship tools that answer real business questions, including geospatial tooling that scores and compares candidate service areas to inform where we deploy next. The feedback loop is short. Your users sit in the same building, your tools will show up in program and executive reviews within weeks of shipping, and you will own a piece of the stack end to end rather than work a ticket queue. In this Role, You Will... Build and ship internal web tools and dashboards on top of existing Zoox data sources, owning them from prototype through the version leaders rely on. Start from the decision, not the dataset — work with TPMs and engineering partners to turn a vague business question into a scoped tool, then iterate quickly on their feedback. Design the data layer behind those tools — queries, transformations, and pipelines that keep them current without manual intervention. Extend our geospatial tooling with new attributes, data sources, and visualizations that sharpen where and how we expand service. Handle real-world data honestly —

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 San Francisco, US About the Role At Cloudflare, we are on a mission to help build a better Internet. As the architectural complexity of enterprise solutions scales, we are evolving how we partner with our customers. The Customer Engineer (CE) represents the core driver of our technical go-to-market strategy: a trusted advisor who owns the technical relationship from the initial discovery phase through to long-term adoption and

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. About the role We are looking for software engineers to help build the foundational pieces for safety, oversight and intervention mechanisms of our AI systems. As a software engineer on the Safeguards team, you will work to monitor models, prevent misuse, and ensure user well-being. This role will focus on building systems to detect unwanted model behaviors and prevent disallowed use of models. You will apply your technical skills to uphold our principles of safety, transparency, and oversight. Responsibilities: Develop the foundational systems which power Safeguards, including infrastructure for data storage and management, metric and evaluation systems, and tooling for human and agentic review. Ensure the day-to-day running of Safeguards systems and hold a high operational bar which serves both safety and customers while reducing the amount of human intervention and oversight required. Build robust and reliable multi-layered defenses for real-time improvement of safety mechanisms that work at scale You may be a good fit if you have: Bachelor’s degree in Computer Science, Software Engineering or comparable professional experience Proficiency in Python Ability to work across the stack Strong communication skills and ability to explain complex technical concepts to non-technical stakeholders Strong candidates may also: 7+ years of experience in a software engineering position Have experience building trust and safety, anti-spam, fraud or abuse detection and mitigation mechanisms and interventions for AI/ML systems Have experience building metrics and measurement systems or data and privacy management systems Have worked closely with op

We're looking for someone who leads and sets technical direction in equal measure. Someone who can make hard calls, navigate business trade-offs, and still walk into a room and have a genuinely useful conversation about architecture, credit decisioning, or how AI is changing the way great engineering teams work. That combination is rare. That's why we're writing this. Few companies at this stage have this much cool stuff ahead of them. The foundation is built. The real expansion starts now. We've already helped a lot of people in debt take back control of their finances. But we're moving to a much larger scale, extending the journey toward lasting financial stability and wellbeing for more people across Europe. We're profitable. We're regulated as a kreditmarknadsbolag, a licence that lets us operate across the entire EU. Germany is growing fast and Sweden and Finland is strong markets. Our 2030 ambition is to be a pan-European company. That future is genuinely exciting and not fully written yet. The team is small and intentionally so. We're not trying to build a massive organisation. We'd rather have fewer people who want to do the exceptional and sometimes the unthinkable. People who trust each other, move fast and care about doing things properly. That's the culture we've built and it's something we're protective of. AI is a big part of how we work. Not just as a strategy, but something that's lived and breathed across engineering, analytics, operations and product development. We're building internal tooling on frontier models and we believe the way strong product and engineering organisations operate is changing quickly. This role requires someone who genuinely believes that too. What the role actually is You'll own the full technology function. That means setting direction, building the team, making trade-offs between speed and quality, and being a real contributor in leadership discussions about the business, not just the technical ones. This role is inherent

About Us At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater. About the Team The Deployed Engineering team works directly with companies building and running AI agents in production, helping turn ideas and prototypes into systems teams can rely on. This is a hands-on, highly technical team that partners closely with customer engineers across the full lifecycle, from pre-sales evaluations to post-deployment advisory work. The focus is on achieving the technical win, co-designing agent architectures, and helping customers operate agents reliably at scale using the LangChain suite. Deployed Engineers sit at the intersection of engineering, product, and go-to-market , shaping how LangChain is adopted in the field and feeding real-world insi

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. About the Role We are seeking a Pre-sales Architect to join our team of identity security experts. In this role, you will leverage your technical expertise and business acumen to drive customer success, helping organisations modernise and secure their identity ecosystems. As a trusted advisor, you will collaborate with enterprise customers, channel partners, and internal teams to deliver innovative identity and access management (IAM) solutions that align with business goals. This role requires a balance of strategic thinking, technical depth, and exceptional communication skills to translate complex identity challenges into solutions that address customer needs. You’ll play a pivotal role in accelerating sales cycles, enabling technical wins, and shaping the future of identity in your region. The Opportunity Reporting into the EMEA Office of the Field CTO, this role will be challenged daily to show prospects and customers how Okta can help solve their business challenges. We are searching for individuals that have experience deploying identity and access management solutions in large and complex environments. This hands-on experience and exposure to the operational aspect of real customer deployments is what sets you apart and provides credibility to the architectures you design and propose. Your proven experience with other products and legacy solutions will be invaluable when assessing a customer’s existing challenges and planning the