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Senior+ Software Engineer, Research Tools

Anthropic

On-site|On-site|San Francisco, CA | New York City, NY

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 crea…

Jan 29, 2026

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Senior Android Software Engineer at Tools for Humanity | San Francisco

Tools for Humanity

Full-time|$246.5K/yr - $290K/yr|On-site|San Francisco

About the Role: We are seeking a talented Senior Android Application Software Engineer to join our dynamic team at Tools for Humanity. In this pivotal role, you will leverage your expertise in Android development to create innovative applications that enhance user experiences and contribute to our mission of building a real human network.Key Responsibilities:Design, develop, and maintain high-quality Android applications.Collaborate with cross-functional teams to define, design, and ship new features.Ensure the performance, quality, and responsiveness of applications.Identify and fix bugs, and optimize application performance.Engage in code reviews and mentor junior developers.Who You Are:Proficient in Kotlin and Java, with a strong understanding of Android SDK.Experience with RESTful APIs, third-party libraries, and JSON.Familiarity with version control tools, such as Git.Strong problem-solving skills and a passion for technology.Excellent communication and collaboration abilities.

Mar 25, 2026

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Senior iOS Software Engineer at Tools for Humanity | San Francisco

Tools for Humanity

Full-time|$221K/yr - $260K/yr|On-site|San Francisco

About the Role: As a Senior Software Engineer specializing in iOS at Tools for Humanity, you will be instrumental in shaping innovative applications that empower users in the age of AI. Your expertise will contribute to building a robust ecosystem where real identities are verified, enabling safer online experiences.Key Responsibilities:Design, develop, and maintain high-quality iOS applications.Collaborate with cross-functional teams to define, design, and ship new features.Continuously discover, evaluate, and implement new technologies to maximize development efficiency.Ensure the performance, quality, and responsiveness of applications.

Jun 2, 2025

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Senior Software Engineer - Operator Tooling

Handshake

Full-time|On-site|San Francisco, CA

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.

Mar 25, 2026

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Senior Software Engineer - Internal Tools & Productivity

Scale AI

Full-time|$216.2K/yr - $270.3K/yr|On-site|San Francisco, CA

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.

Mar 26, 2026

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Full Stack Software Engineer at Tools for Humanity | San Francisco

Tools for Humanity

Full-time|$220K/yr - $250K/yr|On-site|San Francisco

About the Role: We are seeking a talented Full Stack Software Engineer to join our dynamic team at Tools for Humanity. In this role, you will play a pivotal part in developing innovative solutions that empower real human connection in an increasingly AI-driven world. You will work on cutting-edge technologies to create applications that ensure privacy while verifying real identities.Your Responsibilities: As a Full Stack Software Engineer, you will be responsible for designing, coding, testing, and deploying scalable web applications. Collaborate with cross-functional teams to define, design, and ship new features, while ensuring the performance, quality, and responsiveness of our applications. Additionally, you will work on maintaining the codebase and continuously improve the functionality of our platforms.Qualifications: We are looking for candidates with a strong technical background, including proficiency in modern web frameworks, backend services, and database management. Experience with cloud technologies and a passion for building user-centric applications are essential. Strong problem-solving skills and the ability to work collaboratively in a fast-paced environment are key to success in this role.

Oct 13, 2025

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Senior Software Engineer - AI Tools at Airwallex | San Francisco

Airwallex

Full-time|On-site|US - San Francisco

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.

Nov 2, 2025

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Senior Software Engineer - Android Financial Products

Tools for Humanity

Full-time|$230K/yr - $270K/yr|On-site|San Francisco

About the Role:We are seeking a talented and experienced Senior Software Engineer to join our dynamic team focused on developing cutting-edge financial products for Android. In this role, you will leverage your expertise in Android development to create innovative solutions that enhance user experience and drive our mission forward.Key Responsibilities:Design and implement scalable Android applications for financial products.Collaborate with cross-functional teams to define, design, and ship new features.Ensure the performance, quality, and responsiveness of applications.Identify and fix bugs, and enhance application performance.Stay up-to-date with new technology trends and best practices in mobile development.

Dec 16, 2025

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Software Engineer - Billing and Internal Tooling

Baseten

Full-time|On-site|San Francisco

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.

Feb 27, 2026

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Senior Backend Engineer - Tooling

Kiddom

Full-time|On-site|San Francisco or New York

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.

Nov 12, 2025

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Staff Software Engineer, AI Developer Tooling

Sentry

Full-time|On-site|San Francisco, California

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.

Apr 8, 2026

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Senior Tooling Quality Engineer

Oura Health

Full-time|Hybrid|Hybrid - San Francisco, California

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.

Mar 6, 2026

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Senior Android Software Engineer

Tools for Humanity

Full-time|$221K/yr - $260K/yr|On-site|San Francisco

About the Role:As a Senior Android Software Engineer at Tools for Humanity, you will play a pivotal role in creating innovative applications that empower individuals in the AI age. You will collaborate with a talented team to develop high-quality, user-friendly Android applications that leverage our state-of-the-art technology. Your expertise will be critical in enhancing user experience and ensuring the security and privacy of our users.Key Responsibilities:Design, develop, and maintain robust Android applications.Collaborate with cross-functional teams to define, design, and ship new features.Continuously discover, evaluate, and implement new technologies to maximize development efficiency.Ensure the performance, quality, and responsiveness of applications.

Jun 2, 2025

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Senior Software Engineer - Infrastructure and Tools

Databricks

Full-time|$166K/yr - $225K/yr|On-site|San Francisco, California

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.

Jan 30, 2026

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Software Engineer - Developer Productivity & AI Tools

Thinking Machines Lab

Full-time|$350K/yr - $475K/yr|On-site|San Francisco

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.

Feb 5, 2026

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Software Engineer - Post-Training Research

OpenAI

Full-time|On-site|San Francisco

OpenAI is hiring a Software Engineer for Post-Training Research in San Francisco. This position centers on improving the performance and capabilities of advanced machine learning models after their initial training phase. Role overview Work closely with a skilled team to explore new ways of strengthening AI systems. The focus is on researching and developing methods that push the boundaries of what these models can achieve once training is complete. Collaboration Expect to contribute to ongoing research efforts and share insights with colleagues who are passionate about advancing AI. Teamwork and knowledge exchange are key parts of this role. Location This position is based in San Francisco.

Apr 29, 2026

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Software Engineer, Product at Anara | San Francisco

Anara

Full-time|$150K/yr - $200K/yr|On-site|San Francisco

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.

Jan 7, 2026

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Senior Automation & Tools Engineer

Alembic

Full-time|On-site|San Francisco HQ

About the RoleWe are seeking a highly skilled Senior Automation and Tools Engineer to enhance our platform's scalability, reliability, observability, and operational excellence. In this pivotal role, you will collaborate with engineers and data scientists to design, automate, and sustain the infrastructure that drives our core platform, which includes data pipelines, machine learning workloads, and real-time analytics systems.This is a hands-on, impactful position with visibility across the tech stack, providing a unique opportunity to influence the future of our infrastructure and operations.Key ResponsibilitiesCollaborate closely with Site Reliability Engineers (SREs) and developers to automate and manage datacenter and cloud-based infrastructure, focusing on build and deployment systems, as well as configuration management.Enhance system reliability and performance through automation, observability, and proactive capacity planning.Develop and configure tools for datacenter provisioning, configuration management, and observability using both standard and custom tools.Elevate developer experience by providing self-service tools.Implement and uphold monitoring, alerting, and incident response processes including Service Level Objectives (SLOs), runbooks, and on-call rotations.Foster collaboration across engineering and data science teams to cultivate a culture of performance and reliability.Maintain security, compliance, and operational readiness across our physical and cloud infrastructures.Lead post-incident reviews and continuous improvement initiatives.

Dec 22, 2025

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Software Engineer, Research Developer Productivity

OpenAI

Full-time|Hybrid|San Francisco

About the TeamJoin the Fleet team at OpenAI, where we create essential components that empower innovative research across a spectrum from small-scale initiatives to cutting-edge advancements. Our mission is to accelerate the journey toward Artificial General Intelligence (AGI) by collaborating with diverse teams to enhance the development of groundbreaking capabilities.About the RoleAs OpenAI continues to expand its talented pool of researchers and engineers, we are looking for a dedicated and resourceful Software Engineer focused on enhancing the development experience for both our engineering and research teams.In this pivotal role, you will design and maintain systems that facilitate rapid development, testing, and deployment of new features, ensuring a seamless and efficient development cycle. You will be instrumental in shaping our vision for software development, overseeing the architecture of our continuous integration pipelines, testing frameworks, and the support structures for our build environments.Your expertise in Python, Rust, and C++ will be crucial as you strive to elevate our development processes, creating a state-of-the-art experience for our researchers. Your contribution will be vital in providing the necessary tools and metrics to support our fast-paced culture, ensuring a stable and scalable platform for growth while promoting a frictionless experience for OpenAI’s research efforts.This position is based in San Francisco, CA, following a hybrid work model of three days in the office each week, along with relocation assistance for new hires.You may excel in this role if you:Have experience supporting large-scale monorepo development and deploymentPossess strong programming skills in Python, particularly in large monoreposAre proficient in Docker and KubernetesHave a solid background in Continuous Integration/Continuous Deployment (CI/CD)

Sep 22, 2025

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Software Engineer, Internal Tools

Sesame

Full-Time|On-site|San Francisco

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.

Jan 20, 2026

Senior Software Engineer - Operator Tooling

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