Senior Software Engineer - Internal Tools & Productivity

Join Scale AI as a Senior Software Engineer where you will play a crucial role in designing, developing, and managing secure and scalable infrastructure that empowers our team to excel in their work. You will collaborate with an innovative, agile, and solution-focused team dedicated to automating processes in identity and access management, endpoint management, and our extensive SaaS ecosystem. The right candidate will harness a variety of internal and external platforms to create applications, Slackbots, and dashboards for internal users while optimizing intricate workflows through automation. Your contributions will significantly enhance the operational efficiency of all General and Administrative teams within the company.Your Impact:As a full-stack engineer (60% backend / 40% frontend), you’ll collaborate with your team to create exceptional tools and applications for both internal use and external partners.You will be responsible for designing, developing, testing, and supporting full-stack applications on cloud-native distributed systems.You will establish real-time integrations with SaaS platforms across the organization.Develop a comprehensive quality framework/unit tests to ensure product performance, quality, and load handling, while effectively debugging and identifying system issues.Engage with broader teams, participate in engineering councils, conduct code reviews, and enhance our delivery processes.Work closely with the IAM team to manage cloud-based identity (Okta) and access controls, ensuring adherence to security protocols and standards for internal applications.Collaborate cross-functionally to identify opportunities for technological improvements and implement self-service solutions.

Y Combinator is a distinguished accelerator that empowers budding entrepreneurs to launch innovative startups like Airbnb, Stripe, Reddit, and DoorDash. Nestled in the heart of the San Francisco Bay Area, our team collaborates closely to cultivate the next generation of industry leaders. We embody the same philosophies we instill in our startups, making it a unique environment for those familiar with Paul Graham's essays or our engaging YouTube videos.Joining Y Combinator places you in the epicenter of the startup ecosystem.Role OverviewIn our quest to scale operations, we develop a range of software solutions tailored for Y Combinator's internal use. A key focus is creating internal tools that enhance the efficiency of our operations. Our primary users are YC employees such as Group Partners who require productivity tools to engage with thousands of startups, finance teams managing investment documentation, and legal teams addressing diverse startup-related legalities.In this position, you will:Design and develop comprehensive features. Our team is dedicated to supporting founders beyond their batch experience, including creating event software and engagement tools to maintain lasting connections with companies.Collaborate with YC Partners on productivity software. We’ve developed integrations like Gmail plugins and dashboards to facilitate quick engagement with founders.Define and prioritize the development roadmap. We constantly evaluate the balance between effort and impact, with engineers playing a crucial role in determining what features are most essential to tackle next.Assess usage and engagement metrics. We strive to identify what functionalities succeed or fail, emphasizing the importance of continuous improvement for long-term success.Team DynamicsOur software team consists of just 15 full-stack product engineers, fostering a collaborative environment where we all know each other personally. With diverse experiences from major companies like Meta and Google, many team members have also launched their startups. In line with YC's philosophy, our engineers frequently interact with customers and prioritize rapid deployment, while also shaping our roadmap and designing our own projects.

Join Baseten as a Software Engineer focused on Billing and Internal Tooling, where you will play a crucial role in developing and enhancing our internal systems. You will collaborate with cross-functional teams to create efficient billing solutions and streamline internal processes. Your contributions will directly impact our operational efficiency and customer satisfaction.

Join Handshake as a Senior Software Engineer specializing in Operator Tooling. In this role, you will be instrumental in enhancing our operational efficiency through innovative tooling solutions. Your expertise will help streamline processes and empower our operators to deliver exceptional outcomes.

At Thinking Machines Lab, our mission is to enhance human potential through the advancement of collaborative general intelligence. We aspire to create a future where everyone can harness the knowledge and tools necessary to utilize AI for their unique objectives.We are a diverse team of scientists, engineers, and builders, responsible for developing some of the most utilized AI products, including ChatGPT and Character.ai, alongside open-weight models like Mistral. Our contributions extend to popular open-source projects such as PyTorch, OpenAI Gym, Fairseq, and Segment Anything.About the RoleWe are in search of a Developer Productivity Engineer who will play a pivotal role in transforming our software development process to be safer, faster, and more enjoyable. Your primary focus will be on AI tools and coding agents, collaborating closely with platform, security, and product engineers to craft state-of-the-art tools for AI-assisted software development, significantly speeding up our internal processes.This role encompasses establishing company-wide platforms and working directly with developers to enhance their individual workflows.Note: This is an evergreen role that remains open for ongoing interest. While we receive numerous applications, there may not always be an immediate match for your skills and experience. We encourage you to apply as we continuously review submissions and reach out as new opportunities arise. You are welcome to reapply after gaining more experience, but please refrain from applying more than once every six months. Occasionally, we post specific roles for targeted projects or teams; in those cases, feel free to apply directly alongside this evergreen listing.What You’ll DoEmpower researchers and engineers to leverage AI for improved coding productivity while maintaining high code quality.Standardize AI coding tools such as Claude Code, Cursor, and Codex, helping to configure, secure, and maintain these tools while balancing organization-wide settings with individual developer preferences.Create secure, reproducible agent sandboxes for remote development and continuous integration testing.Establish golden-path development environments and safeguard measures for sensitive information.Assist individual contributors in crafting their personalized AI-enabled workflows.Monitor tool usage, reliability, and cost.

About SesameAt Sesame, we envision a future where technology transcends mere functionality to become an intuitive part of our daily lives. Our mission is to create lifelike computers capable of perceiving, understanding, and interacting with us in a natural way. We are pioneering a new generation of computing focused on integrating voice agents seamlessly into everyday routines. Our team is a blend of innovators from Oculus and Ubiquity6, alongside seasoned professionals from Meta, Google, and Apple, each bringing unparalleled expertise in hardware and software. Join us in crafting a future where computers truly come alive.About the RoleAs a Software Engineer specializing in internal tools at Sesame, you will play a key role in developing and maintaining pipelines and tools that process audio and text data. You will be responsible for producing and evaluating trained AI models for both text and voice interactions. Collaborating with machine learning engineers, researchers, and cross-functional teams, you will create tailored solutions that cater to the needs of your colleagues. The ideal candidate is not only a proficient software engineer but also possesses a keen sense of UI/UX design for custom internal tools. You will develop and sustain React-based web applications that enable teams to manipulate extensive datasets in the cloud, as well as maintain the cloud-deployed Python infrastructure that powers our innovative products. Being a dynamic startup, Sesame values adaptability; therefore, you should be comfortable exploring various technical domains, learning new tools and services, and applying best practices for robust software development and deployment.Responsibilities:Contribute to the enhancement of our machine learning infrastructure, internal tools, and data management systems.Boost developer productivity and ensure application reliability through investment in developer tooling and best practices.Required Qualifications:Demonstrated experience in navigating ambiguous work environments independently.Proven background in machine learning infrastructure, internal tooling, and data management.Experience collaborating with machine learning and research teams.Familiarity with developing consumer-oriented, scalable applications.Knowledge of database management systems.Bachelor's degree or higher in Computer Science or a related field.At least 3 years of professional experience in a similar role.

Join Airwallex as a Senior Software Engineer - AI ToolsAre you ready to make a significant impact in the world of global finance? At Airwallex, we are the leading unified payments and financial platform for businesses around the globe. Our innovative solutions empower over 200,000 businesses, including industry giants like Brex, Qantas, and SHEIN, to seamlessly manage everything from accounts to treasury operations.Founded in Melbourne and now boasting a team of over 2,000 talented individuals across 26 offices worldwide, we are valued at $8 billion and supported by top-tier investors such as T. Rowe Price and Visa. If you're eager to take on challenging projects and grow your career, we want you on our team.What We ValueWe seek dynamic builders with a passion for innovation and a desire to take ownership of their work. You should bring a wealth of expertise and a sharp, analytical mindset, driven by our mission and operating principles. Your ability to make quick yet sound decisions while exploring new avenues will be paramount.As a collaborative team player, you will turn groundbreaking ideas into tangible products and drive our projects to completion. Leveraging AI will be key to working efficiently and solving problems swiftly. Join us in addressing complex challenges with exceptional colleagues while advancing your career in the future of global banking.Your RoleAs a Senior Software Engineer focusing on AI tools, your mission will be to maintain the security of over $150 billion in payments across 150,000 companies and thousands of employees.You will collaborate with internal teams to identify impactful projects, such as developing automation tools, managing our extensive log pipelines, and employing AI to enhance team operations. We value versatility and intelligent problem-solving over specific technologies, so you'll have the freedom to choose the best approaches. Additionally, you'll play a crucial role in mentoring junior engineers and contributing to the growth of our exceptional engineering team.

About AnthropicAt Anthropic, we are dedicated to developing AI systems that are safe, interpretable, and controllable. Our mission is to ensure that AI technology benefits not just our users, but society as a whole. We are a dynamic and rapidly expanding team of researchers, engineers, policy experts, and business leaders, all working collaboratively to create AI solutions that truly enhance human capability.About the RoleThe Research Tools team at Anthropic is at the forefront of AI safety and capability research, and we require outstanding software solutions to optimize our efforts. As a Senior Software Engineer on this team, you will be pivotal in creating the infrastructure and applications that empower our researchers to conduct complex experiments, iterate rapidly, and derive insights from cutting-edge AI systems.This role merges product development with full-stack engineering. You will collaborate closely with researchers and engineers to understand their workflows, identify roadblocks, and deliver swift solutions that enhance productivity. Whether you are developing interfaces for human feedback on model evaluations, creating platforms for orchestrating experiments, or crafting innovative visualization tools to interpret model behavior, your contributions will significantly advance our mission to build trustworthy AI systems.We seek an individual who thrives in ambiguous environments, possesses a high degree of autonomy, and can swiftly acquire domain knowledge to drive impactful projects from inception to completion.No prior machine learning or research experience is necessary.

P-97 At Databricks, we are on a mission to fundamentally simplify the entire data lifecycle—from ingestion and ETL to BI and ultimately to ML/AI—through a unified platform. We envision a future where the traditional data warehouse architecture is transformed by an innovative architectural model known as the Lakehouse (CIDR 2021 paper). This open platform merges data warehousing with advanced analytics, effectively addressing critical challenges such as data staleness, reliability, total cost of ownership, data lock-in, and limited use-case support. A key component in realizing this vision is the development of a next-generation decoupled query engine and structured storage system that surpasses the performance of specialized data warehouses while maintaining the flexibility of general-purpose systems like Spark™ to cater to a wide range of workloads, from ETL processes to data science applications. As a vital member of our team, you will engage in the design and implementation of these next-generation systems that aim to leapfrog the current state-of-the-art in the following areas: Query compilation and optimization Distributed query execution and scheduling Vectorized execution engine Data security Resource management Transaction coordination Efficient storage structures (encodings, indexes) Automatic physical data optimization

Join Strava: Where Active Lives ThriveStrava is the premier application for active individuals, boasting a vibrant community of over 180 million athletes across more than 185 countries. It's not just about tracking workouts; it's about fostering progress and achieving personal milestones together. Whether you enjoy running, cycling, swimming, or any other sport, Strava is your partner in success. Connect with others, surpass your goals, and ensure that every effort counts. Embark on your journey with Strava today.Our mission is straightforward: to inspire individuals to lead their most active and fulfilling lives. We firmly believe in the transformative power of movement to unite and propel people forward.As part of the Foundation engineering team at Strava, you will play a critical role in maintaining the infrastructure that supports millions of athletes worldwide. We design and refine tools and systems that empower our developers, sales, and support teams to deliver features with confidence, safety, and efficiency. In your role as a Senior Engineer, you will be instrumental in shaping and enhancing Strava’s internal platform and administrative tools. This is your chance to significantly impact by modernizing internal tools for customer support teams, enhancing their productivity and their ability to deliver outstanding athlete experiences.We embrace a hybrid work model, allowing you to spend more than half your time on-site at our San Francisco office — three days each week.

Anara is seeking a talented Software Engineer to join our innovative team in revolutionizing scientific research. In this role, you will develop groundbreaking tools that will redefine the landscape of scientific discovery for generations.Your Responsibilities:Design and implement scalable features and infrastructure for cutting-edge AI-driven research tools.Collaborate directly with customers to gather valuable insights and enhance user experience.Continuously monitor and optimize system performance and costs, making strategic trade-offs to maintain agility.Establish best practices for prompt engineering and deployment of new models and workflows.Lead the design and automation of evaluation pipelines to consistently assess, benchmark, and enhance AI agent quality and reliability.

About KiddomKiddom is an innovative educational platform dedicated to fostering student equity and growth by integrating top-tier instructional materials with engaging digital learning experiences. With unparalleled curriculum management tools, Kiddom enables schools and districts to take charge of their curriculum, creating customized learning experiences that cater to the unique needs and aspirations of their communities. Our high-quality curriculum comes equipped with powerful insights for teachers and leaders, driving the ongoing enhancement of instructional strategies, school and district programming, and professional development.The Tooling team at Kiddom is responsible for developing and maintaining the essential systems that empower all engineering teams to produce reliable, scalable, and efficient software solutions. As a Senior Backend Engineer on this team, you will concentrate on crafting backend services, automation frameworks, and internal developer tools that enhance the speed and reliability of our entire platform.Your contributions will significantly influence how Kiddom engineers design, deploy, and monitor systems at scale, with a strong focus on clean, maintainable, and testable code, primarily in Python, with additional opportunities to work with GoLang.

Join our dynamic team at Sentry as a Staff Software Engineer specializing in AI Developer Tooling. In this pivotal role, you will contribute to the development and enhancement of cutting-edge AI tools that empower developers worldwide. Collaborate with cross-functional teams to identify challenges and deliver innovative solutions that optimize the software development lifecycle.

As a Senior Tooling Quality Engineer at Oura Health, you will play a pivotal role in ensuring the precision and reliability of our tooling processes. You will collaborate with cross-functional teams to refine tooling methodologies, enhance quality control protocols, and drive continuous improvement initiatives. Your expertise will be vital in maintaining high standards of quality in our manufacturing processes.

About Sprinter Health:At Sprinter Health, we are dedicated to transforming healthcare accessibility by delivering services directly to patients' homes. Approximately 30% of patients in the U.S. forgo essential preventive or chronic care due to transportation challenges, often leading them to the emergency room as their first point of contact with the healthcare system, resulting in over $300 billion in avoidable costs annually.Leveraging cutting-edge technologies that drive leading marketplace and last-mile platforms, we prioritize delivering care where it is needed most. To date, we have successfully assisted over 2 million patients across 22 states and conducted more than 130,000 in-home visits, boasting a remarkable 92 Net Promoter Score (NPS). With a team of skilled clinicians, technologists, and operators, we have raised over $125 million from esteemed investors such as a16z, General Catalyst, GV, and Accel, ensuring a strong multi-year runway for our initiatives.About the Role:We are seeking an experienced Senior Backend or Full-Stack Software Engineer with a minimum of 5 years of experience who is eager to create the foundational systems that enable last-mile healthcare delivery. In this role, you will engage in developing products that integrate logistics, patient experience, safety, and medical operations. You will be responsible for building and scaling backend services, data flows, integrations, and product experiences that are critical to patient care. Your responsibilities will include routing clinicians, managing booking flows, integrating medical devices, and mitigating clinical errors, allowing you to manage complex, high-impact systems from inception to execution. If you are passionate about solving real-world problems through coding and delivering products that enhance healthcare access, we invite you to apply.Work Environment:As a hybrid company based in the Bay Area, we have offices in both San Francisco and Menlo Park. We value work-life balance and understand that flexibility is essential at times.

P-78 While candidates in the listed locations are encouraged for this role, candidates in other locations will be considered. At Databricks, we are dedicated to empowering data teams to tackle the world's most challenging problems—from realizing the next mode of transportation to advancing medical breakthroughs. We accomplish this by creating and managing the premier data and AI infrastructure platform, enabling customers to leverage deep data insights for business enhancement. Founded by engineers and with a strong customer focus, we eagerly embrace every opportunity to address technical challenges, from crafting cutting-edge UI/UX for data interaction to scaling our services and infrastructure across millions of virtual machines. And this is just the beginning. As a Senior Software Engineer on the Infrastructure teams, you will develop scalable systems that underpin the Databricks platform, positioning it as the go-to solution for executing Big Data and AI workloads. Your role will involve enhancing the Databricks infrastructure platform, encompassing multi-cloud systems and services designed to manage thousands of Kubernetes clusters at scale, storing petabytes of data, providing highly scalable and distributed API gateways, implementing a rate limiting framework, ensuring network security and encryption, and creating developer tools and infrastructure (we utilize Bazel), testing frameworks, and scalable CI/CD systems, among many other responsibilities. The impact you will have: Expand and enhance key components of the core Databricks infrastructure. Design multi-cloud systems and abstractions to enable the Databricks product to operate across existing Cloud providers. Enhance software development workflows to improve engineering and operational efficiency. Utilize our own data and AI platform to analyze build and test logs and metrics, identifying areas for enhancement. Create automated build, test, and release infrastructures. Establish and maintain engineering process standards to support our growth and success.

Why Choose Flux?At Flux, we are transforming the landscape of hardware development by pioneering the world's first AI Hardware Engineer. Our mission is to democratize access to cutting-edge hardware creation and transform the way electronics are designed and manufactured globally.About the RoleWe are on a quest to build the first AI Hardware Engineer, software capable of designing tangible, manufacturable electronics from simple prompts. As a Senior Software Engineer focusing on Agentic Development, you will be responsible for creating the system's intelligence, developing agentic workflows, reasoning graphs, and integrations that empower both novice and experienced engineers in their journey from concept to manufacturable hardware.This position fuses advanced web engineering with AI systems design. You will leverage TypeScript and LangGraph within the Flux web application and backend platform, embedding intelligent features directly into the design environment.Key ResponsibilitiesDevelop and implement agentic reasoning capabilities using TypeScript (LangGraph).Integrate AI functionalities into the Flux web application (React/Redux) and Chat UI.Implement telemetry and logging for monitoring runtime health, performance, and cost efficiency.Collaborate closely with product and electrical engineers to refine intelligent ECAD workflows.Conduct evaluations and translate insights into engineering decisions.Contribute to the development of agentic patterns, conventions, and best practices within the engineering organization.Required Qualifications8+ years of experience in software engineering, with at least 1 year in developing generative-AI or agentic systems.Proficient in TypeScript, React, and Node.js.Experience with LangChain, LangGraph, or similar orchestration frameworks.Proven track record in building asynchronous, distributed systems in a production environment.Experience in integrating LLM-based systems into complex user-facing web products.Strong communication skills and comfort working in a fully remote, asynchronous team setting.Previous experience in a startup or in 0→1 product development environments.Preferred QualificationsFamiliarity with retrieval systems, evaluation pipelines, or agent benchmarking.

Role Overview Parafin is hiring a Senior Software Engineer focused on Lending Products in San Francisco, CA. This role centers on building and improving software that powers financial solutions for lending. The work directly shapes how customers interact with Parafin’s products and how efficiently lending operations run. What You Will Do Design, implement, and refine software systems for lending products Work closely with engineers and other team members to deliver features that improve the lending experience Identify opportunities to streamline processes and boost product performance

Adyen is looking for a Senior Software Engineer to join the Financial Products team in San Francisco. This role focuses on designing and building software that supports a wide range of clients and business needs. The main objective is to create reliable systems that process financial transactions quickly and securely. Role overview This position centers on developing software solutions for Adyen’s financial products. The work involves building systems that handle sensitive transactions, ensuring both efficiency and security remain top priorities. What you will do Design and implement software tailored to financial products Develop transaction processing systems with a focus on speed and security Collaborate with teams across various functions to deliver effective solutions Contribute to keeping Adyen’s financial offerings innovative About Adyen Adyen is a global payments company that works with businesses around the world. The team values collaboration, technical skill, and ongoing improvement in financial technology.

Why Join UsAt Brex, we are revolutionizing the way businesses manage their spending through our AI-driven spend platform. Our integrated solutions, including corporate cards, banking, and global payment systems, empower companies to manage their finances with confidence. We proudly serve tens of thousands of businesses, from innovative startups to established enterprises like DoorDash, Flexport, and Compass, enabling them to take control of their expenditures, streamline costs, and enhance efficiency worldwide.Joining Brex means pushing your boundaries, challenging conventional thinking, and collaborating with some of the brightest talents in the tech industry. We are dedicated to fostering a diverse and inclusive culture, where your aspirations are only limited by your imagination. We equip you with the necessary tools, resources, and support to advance your career.Engineering at BrexOur engineering teams are committed to developing scalable systems with purpose and speed. We encompass diverse areas such as Software, Data, Security, and IT, and we thrive on autonomy and collaborative efforts. Our approach involves tackling complex technical challenges, taking ownership of our results, and striving for excellence in every phase—from architecture to deployment. Here, engineering is an art, and builders evolve into leaders.Your RoleAs a Senior Software Engineer at Brex, you will be instrumental in the end-to-end development of innovative products, whether for a small startup or a large corporation. We seek passionate individuals who excel in building products and navigating the complexities of dynamic environments. You will create impactful customer-facing products that directly influence business outcomes and help shape our long-term technical strategy while maintaining high standards of quality. You will be encouraged to leverage metrics and data, think creatively, and contribute to Brex's scaling efforts as we enter new markets. Your Work EnvironmentThis position is based in our San Francisco office, where we embrace a hybrid work model that blends the vibrancy of in-office collaboration with the flexibility of remote work. We currently require a minimum of three coordinated in-office days per week (Monday, Wednesday, and Thursday), with the option for up to four weeks of fully remote work each year!