Senior Software Engineer - Web API Platform

We are seeking a highly skilled Senior Staff Software Engineer specializing in API development to join our dynamic team at Anthropic. In this role, you will have the opportunity to leverage your expertise to design and implement cutting-edge APIs that will enhance our products and services.As a key member of our engineering team, you will collaborate closely with cross-functional teams to understand customer needs and translate them into scalable and efficient solutions. You will be responsible for ensuring that our APIs are robust, secure, and user-friendly.

Join our innovative team at Lambda as a Senior Software Engineer specializing in API development. In this pivotal role, you will leverage your extensive technical expertise to design, implement, and optimize robust APIs that enhance our software solutions. Collaborate with cross-functional teams to deliver high-quality products that meet our customers' needs.

The OpportunityAt Enigma, we are at a pivotal moment of growth, receiving enthusiastic feedback from our clients regarding the substantial value our product provides. This feedback drives our urgent need to effectively present the capabilities of our small business data as we expand our sales and marketing efforts.The RoleWe are seeking a skilled Senior Software Engineer to join our dynamic API and Data Delivery Team. In this position, you will be instrumental in designing, constructing, and maintaining essential systems for processing and delivering vast datasets, collaborating with both teammates and clients to address impactful, real-world challenges.What You’ll DoDevelop scalable, highly available, and high-throughput systems deployed in cloud environments.Tackle challenges involving containers, cloud infrastructure, and infrastructure as code (primarily using Docker, AWS, and Terraform).Exhibit a proactive attitude that embraces challenges, regardless of their size.Take pride in writing clean, well-tested, and maintainable code.Thrill in collaborating as part of a motivated and cohesive team.Identify and address problems that may go unnoticed by others.Be driven to create tangible impacts for our customers.Inspire your colleagues to excel while fostering a collaborative and supportive team culture.Manage responsibilities related to architecture, design decisions, hands-on implementation, team organization, and technical mentorship.What Makes This Role Exciting?Impact: Your technical expertise and decision-making will directly influence our customers and the success of our product, affecting critical choices at multi-billion dollar firms.Technical Challenge: Engage with cutting-edge technologies surrounding databases, information retrieval, distributed systems, microservices, elastic scaling, data pipelines, and more.Ownership: The API & Data Delivery team is addressing some of the world's most complex challenges. The ideal candidate is an engineer eager to expand their responsibilities and collaborate with the team to create significant technical and business impacts.

About Scribd:At Scribd Inc. (pronounced “scribbed”), our vision is to ignite human curiosity and foster a world enriched with stories and knowledge. We invite you to join our dynamic team as we democratize the sharing of ideas and information, and empower collective intelligence through our suite of innovative products: Everand, Scribd, Slideshare, and Fable.This job posting highlights an approved, open position within our organization.We cultivate a culture where our employees can express authenticity and embrace boldness. We encourage robust debates and commitment while adapting to the unexpected, ensuring each team member is empowered to take meaningful action focused on our customers.Our workplace structure emphasizes a balance between individual flexibility and community connectivity. Through Scribd Flex, our flexible work benefit, employees can collaboratively choose the work style that best meets their unique needs, in partnership with their manager. A key aspect of Scribd Flex is our emphasis on intentional in-person interactions to enhance collaboration, culture, and camaraderie. Therefore, occasional in-person attendance is essential for all Scribd Inc. employees, regardless of their location.What do we seek in our new team members? We hire for “GRIT.” The essence of GRIT is the convergence of passion and perseverance toward long-term objectives. At Scribd Inc., we believe in the immense potential unlocked by this mindset, and we encourage every employee to embody a GRIT-ty approach in their responsibilities. Specifically, we are looking for someone who can set and achieve Goals, deliver Results, bring forth Innovative ideas and solutions, and positively impact the broader Team through effective collaboration and attitude.The TeamOur Web Platform team is an integral part of the Developer Platform organization, championing our broader Web Modernization initiatives across the company.Our mission is to accelerate product teams by providing a scalable, thoughtfully designed API foundation that supports modern web architectures. We collaborate across the organization to minimize dependencies, enhance developer experience, and establish robust integration patterns between frontend experiences and backend systems.

At Perplexity, we're revolutionizing the way individuals search, reason, and engage with information. Our API team is pivotal to this mission, crafting and managing high-performance interfaces that connect Perplexity’s intelligence with developers, enterprises, and products globally. This team is responsible for the architecture, reliability, and security of the APIs that fuel everything from real-time LLM queries to large-scale enterprise integrations.In the role of Staff Backend Engineer, you will play a crucial part in shaping the technical backbone of Perplexity’s external platform. You will design distributed systems, enhance performance at scale, and establish engineering standards to ensure our APIs are swift, dependable, and enjoyable for developers to work with.

About Our TeamJoin a dynamic group that is dedicated to delivering OpenAI’s cutting-edge technology to developers globally through our robust developer platform, the OpenAI API. As the foremost AI development platform, our API is utilized by millions of developers and leading enterprises worldwide, powering a majority of the AI applications you encounter daily. Our latest innovations include gpt-5, gpt-realtime, Responses API, Agents SDK, and much more.About the PositionWe are seeking a passionate Software Engineer who will take ownership of our API designs. Our API is integral to our product, and we approach its design and development with meticulous care and intent. Every endpoint, field name, and enum value is a crucial part of the product interface that we strive to perfect. We want engineers who not only excel at creating APIs but also appreciate the nuances of exceptional API design. In this pivotal role, you will significantly influence the future development of the OpenAI API through both design and implementation.Key Responsibilities:Design and create innovative products for our API, including extending existing endpoints, adding new ones, or reimagining our entire API suite.Take a lead role in our API Review process, collaborating with various teams to ensure our APIs meet the highest design standards.Work closely with the API team, Developer Experience team, and Go-To-Market (GTM) team to elevate our APIs to global excellence.You Will Excel In This Role If You:Have a keen eye for API design and recognize the difference between well-crafted and poorly constructed APIs.Thrive in a fast-paced environment where you can work independently with ambiguous goals and requirements.Enjoy building tools for fellow developers and value constructive feedback from discerning users.Are fundamentally an engineer but also willing to engage in product decision-making.View APIs as ladders that empower users.About OpenAIOpenAI is at the forefront of AI research and deployment, committed to ensuring that general-purpose artificial intelligence benefits all of humanity. We continuously push the limits of AI capabilities while prioritizing safe and ethical deployment to maximize positive impact.

Join Convex in Revolutionizing Application Development!At Convex, we are on a mission to revolutionize the way developers build applications by enabling them to create fast, reliable, and dynamic apps without the need for a backend team. Our innovative full-stack app platform is meticulously crafted with database, compute, and backend abstractions, allowing developers and LLMs to rapidly innovate while ensuring scalability and simplicity throughout the product lifecycle.Meet Our Team:Our team comprises talented engineers who have built and designed some of the world’s most extensive backends, handling exabytes of data and millions of transactions per second, while also delivering desktop and mobile software across billions of devices. We pride ourselves on our friendly, collaborative, and passionate culture, thriving in our San Francisco office.The Opportunity:As a key player in our backend platform, you will enhance our standout client API and developer experience. We have dedicated significant resources to perfecting our client libraries, development APIs, and sync protocol, ensuring that Convex is a delight for application developers. We are looking to grow our team to advance the next iteration of the Convex API and redefine the modern application stack.If you are an experienced TypeScript developer with a passion for elegant API design and recognize the importance of robust platforms in the age of AI development, we want to hear from you!Your Responsibilities:Design, develop, and maintain Convex’s client libraries, sync protocol, and query APIs.Stay updated with new frameworks and technologies within the app development landscape.Gain insights into effective abstractions that scale and integrate seamlessly within our stack to create libraries that are user-friendly and maintainable.Work autonomously to prioritize impactful projects while collaborating closely with the engineering team and CTO (hi! I'm James).Contribute to establishing best practices and design guidelines as our team and systems expand.Write engaging and innovative client library code.

Employee Applicant Privacy NoticeWho We Are:Join us in shaping a brighter financial future.At SoFi, we are transforming the personal finance landscape and empowering our members to achieve their financial goals through innovative, mobile-first technology. As a next-generation financial services company and national bank, we are at the forefront of an unprecedented industry transformation. Our core values guide us daily, and we take pride in the meaningful impact we have on our members' lives. Invest in yourself, your career, and the financial world with us.The Role:We are seeking a seasoned Senior Staff Software Engineer to join our Builder Tools engineering team. This role involves enabling SoFi engineers to effectively address challenges by influencing the architecture and direction of our next-gen AI-powered Software Development Lifecycle (SDLC). You will enhance developer experience through AI-enabled workflows, tooling, and practices, while leading and tackling intricate problems in a dynamic, collaborative environment. The ideal candidate will be a mentor, a technical leader, and a team player, hands-on in driving solutions from architecture through to implementation with a strong sense of ownership and commitment to delivery.What You’ll Do:Technical Leadership: Provide guidance on technical architecture and design, implementation, delivery, and operations of AI-enabled tools across the SDLC including planning, coding, testing, building, deploying, observing, and remediating.Innovate: Collaborate with cross-functional teams to foster innovation in developer tooling and advancements, including AI-assisted productivity flows.Exemplary Practitioner: Serve as a subject matter expert in one or more developer tooling domains, ensuring operational excellence.Mentor: Work closely with team engineers, providing mentorship and domain expertise to bolster the team's overall technical capabilities.

About UsParallel is a leading web infrastructure company empowering businesses across sales, marketing, insurance, and software development to create state-of-the-art AI agents. Our innovative products provide flexible and robust programmatic access to the web.With a successful funding round of $130 million from prestigious investors including Kleiner Perkins, Index Ventures, Spark Capital, Khosla Ventures, First Round, and Terrain, we are assembling a stellar team of engineers, designers, marketers, and operational experts to revolutionize web technology for AI.Role Overview: As a key member of our technical staff, you will be responsible for developing and maintaining our backend infrastructure, which currently manages millions of requests daily. Your focus will be on ensuring high reliability and performance while exceeding customer expectations as we expand our services. You will also play a crucial role in maintaining our API, making it user-friendly and easy for developers to integrate.What We Seek: You possess a profound understanding of distributed systems, database management, and maintainable code architecture. Your ability to evaluate trade-offs between speed, scalability, and developer experience is essential. You are passionate about creating products and APIs that have significant real-world impact and are beloved by developers.Life at ParallelOur team operates fully in-person between our headquarters in Palo Alto and our San Francisco office. We pride ourselves on being a flat organization with a dense talent pool dedicated to tackling complex technical and creative challenges.We are looking for individuals who share our enthusiasm for applying science, creativity, and consistency to solve large, intricate problems that yield substantial outcomes. Our core values include:Customer Impact: We take ownership of delivering tangible results for our clients.Craftsmanship: We obsess over every detail, as quality compounds.Change Acceleration: We prioritize rapid shipping and swift adaptation, bringing innovative ideas to production.Win-Win Solutions: We creatively turn challenges into opportunities.High-Conviction Decisions: We embrace experimentation; we learn from failures and celebrate our successes.Compensation & BenefitsCompetitive salaryGenerous equity optionsVisa sponsorship available401K retirement plansDaily lunch and office snacks

Employee Applicant Privacy NoticeAbout Us:Join us in shaping a brighter financial future. Together with our members, we are transforming the way individuals perceive and engage with personal finance.As a pioneering financial services company and national bank, we harness innovative, mobile-centric technology to empower millions of our members in achieving their financial goals. The industry is currently under a remarkable transformation, and we are proud to be at the forefront of this evolution. Every day, we come to work knowing our actions directly influence people's lives, guided by our core values. Join us to invest in yourself, your career, and the world of finance.The RoleWe are actively seeking a Senior Staff Engineer to become an integral part of our team. SoFi is launching a new unit dedicated to developing cryptocurrency products and services for our members. Recent advancements have opened a pathway for SoFi to re-enter this space and expand our offerings with intuitive, secure, and comprehensive solutions across crypto investing, transfers, payments, custody, and more.In this role, you will be at the heart of our efforts—designing functionality, architecting our systems, resolving bugs, ensuring code health, and continuously evolving as an engineer. The ideal candidate is proactive and hands-on, possesses a strong sense of ownership and commitment to delivery, and excels as a mentor and collaborator. At SoFi, we value collaboration among Product, Design, and Engineering, so you will engage in the entire product lifecycle, from conception to deployment and ongoing enhancement.At SoFi, you will be part of a transformative financial company with the ambition to help our members achieve financial independence and meet their goals. We strive to be at the core of our members' financial lives, assisting everyone in managing their finances effectively. We pioneered student loan refinancing to tackle the primary financial challenge of a new generation with a modern approach to lending and personal finance. We have since broadened our range of products and services across lending, wealth management, and insurance. SoFi has experienced remarkable growth and has ambitious plans for the future, but to sustain this momentum, we need exceptional talent. And that begins with you.

Role Overview Postman is hiring a Senior Software Engineer focused on Monetization for the San Francisco office. This role centers on designing and building new features that support and expand Postman’s monetization efforts. The work directly impacts how users experience and interact with the platform’s paid offerings. What You Will Do Architect and develop features that support revenue growth and user satisfaction Work closely with teams across engineering, product, and design to deliver scalable solutions Ensure that new monetization features maintain high standards for performance and reliability Location San Francisco, California, United States

About the Role: Join our dynamic team at Tubi TV as a Senior Staff Software Engineer, where your deep technical knowledge will intersect with influential organizational leadership. This position transcends individual service management, requiring a proven ability to make significant contributions across teams, domains, and comprehensive distributed systems. This is a hybrid role based in our San Francisco or New York City offices, with a requirement to be present in-office three days a week. What You'll Do: Define and steer the architectural vision across various services and teams. Lead the design and enhancement of distributed systems. Ensure the systems are developed for enduring scalability, resilience, observability, and security. Facilitate technical alignment across diverse teams within client, infrastructure, product, ads, and content domains. Mentor senior engineers, elevating engineering standards throughout the team. Make pivotal system design decisions impacting multiple platforms. Contribute to domain expertise in areas such as Linear systems, EPG platforms, or time-based content architectures (preferred). Advance Tubi’s backend development practices, encompassing AI-native engineering workflows. Exhibit flexibility to address critical business requirements outside of regular working hours when necessary, such as on-call responsibilities and live events. Demonstrate a strong sense of ownership, proactively managing on-call situations and production stability. Showcase cross-team leadership capabilities, with experience navigating complex organizational environments. Your Background: Proven experience in designing and operating large-scale distributed systems. Expertise in backend development (preferably Elixir and Rust or similar languages). Strong architectural judgment with a track record of successful cross-team technical leadership. Proficient in gRPC/Protocol Buffers, RESTful APIs, Kubernetes, and observability systems. Ability to lead intricate, cross-functional initiatives effectively. Excellent communication skills with the capacity to articulate trade-offs and foster alignment. Experience in high-traffic, mission-critical production environments. Familiarity with Linear content systems, EPG platforms, or time-based scheduling architectures is preferred. Hands-on experience in constructing or supporting systems for large-scale live events (e.g., major sports).

About the Senior Staff Software Engineer Role Crusoe Technologies is hiring a Senior Staff Software Engineer for the CAPE project in San Francisco, CA. This role focuses on building and maintaining scalable software that strengthens our infrastructure and streamlines operations. What You Will Do Design and develop software solutions for the CAPE project Maintain and improve existing systems to support infrastructure growth Work closely with teams across disciplines to deliver reliable, efficient software What We Look For Advanced programming skills Deep understanding of software architecture Experience collaborating with cross-functional groups

Join Decagon as a Staff Software Engineer specializing in Agent Development. In this pivotal role, you will work on cutting-edge software solutions that enhance our capabilities in agent-based systems. You will collaborate with cross-functional teams to design, develop, and implement innovative software applications that drive our mission forward.

Senior Staff Software Engineer Location: Hybrid - Palo Alto Office on Tuesdays and Thursdays Make a Meaningful Impact At Midi Health, we're on a mission to transform women's healthcare. We are seeking a dynamic Senior Staff Fullstack Engineer who will act as a technical cornerstone within our Engineering Organization. As we expand, you will play a crucial role by translating intricate insights into cohesive technical blueprints and innovative products that drive our vision forward. Your Responsibilities Diagnose intricate technical challenges and spearhead architectural evaluations across diverse teams to mitigate technical debt, establish cross-service frameworks, and secure the long-term viability of Midi’s healthcare infrastructure. Function as a 'part-time product manager for technology', championing essential infrastructure enhancements that foster future operational agility. Design and develop outstanding, scalable, and adaptable products and code, striking a balance between execution speed and scalability. Influence engineering culture positively by promoting best practices for automated testing, CI/CD, and maintaining high-quality code across the entire stack. Assess high-level technical and business issues, architecting elegant and flexible solutions that consider long-term scalability and business expansion. Collaborate with Executive Leadership, Product, Marketing, and Clinical Stakeholders to uncover unmet customer and operational needs, translating business objectives into technical strategies that yield results for our patients and clinicians. Mentor senior and junior engineers through formal and informal channels, nurturing an environment of curiosity, humility, and technical excellence. About You You bring over 8 years of experience in building and scaling intricate engineering solutions, with a demonstrable history of leading large-scale architectural migrations in a startup setting. You have proven expertise in Django/DRF and React/Next.js. You are adept at navigating high-level abstractions, converting vague product and growth aspirations into tangible technical roadmaps. Your diverse background includes creating consumer-facing products alongside deep proficiency in architecting complex operational and workflow management systems. You are an advanced user of agentic coding tools and LLMs (e.g., Claude Code, GitHub Copilot) to expedite development and guide the team on high-leverage prompting and code auditing strategies.

About the TeamThe Launchpad team comprises innovative engineers who work closely with our VP of Product & Design and our Co-founder to uncover strategic business opportunities and develop cutting-edge solutions.About the RoleDoorDash is seeking a seasoned backend engineer to take charge of a confidential initiative. Over the last year, the Launchpad team has gained significant traction with a range of emerging hardware-integrated products. This is a hands-on technical position focused on designing backend systems and APIs that must function flawlessly 24/7, regardless of network conditions, while rapidly deploying new features and collaborating cross-functionally with Product, Design, and Hardware teams.You will report directly to the Head of Launchpad Engineering.You’re Excited About This Opportunity Because You Will…Design robust backend solutions to support in-field hardware devices around the clock.Collaborate with Product Managers, Business leaders, and key stakeholders to define the team’s roadmap and vision, and oversee the execution of that roadmap.Thrive in an ambiguous, fast-paced business environment.Promote innovation, teamwork, the implementation of advanced technologies, and creative problem-solving.We’re Excited About You Because You Have…A Bachelor's, Master's, or PhD in Computer Science or a related field.Over 10 years of industry experience.Proven experience leading complex distributed systems projects and mentoring other engineers.A strong background as an engineer in a fast-paced, product-oriented development environment.Extensive experience in designing and scaling backend services for performance and reliability.A track record of shipping consumer-facing products at scale.

Role Overview Pinterest is looking for a Senior Staff Software Engineer to join the Merchants team. This role focuses on building and improving features that support merchants and enhance the overall platform experience. What You Will Do Work closely with teams across engineering, product, and design to gather requirements and set technical direction. Design and implement scalable systems that support merchant needs and user engagement. Develop software solutions that help merchants connect with Pinterest users and grow their businesses. Contribute to the platform’s mission of inspiring creativity and discovery worldwide. Location This position is based in San Francisco, CA or Palo Alto, CA.

Postman Inc. seeks a Senior Fullstack Software Engineer in San Francisco, California, to help advance the future of API collaboration. This role involves working across both front-end and back-end systems, with a focus on building reliable, scalable solutions that support the company’s platform. Responsibilities Design and develop features across the full technology stack, from user interfaces to backend services Collaborate with cross-functional teams to deliver improvements that enhance user experience and workflow efficiency Contribute to architectural decisions and drive ongoing improvements in software design Mentor junior engineers and support the growth of technical expertise within the team Requirements Proven experience building and maintaining fullstack applications Strong understanding of both front-end and back-end technologies Ability to work effectively with engineers, designers, and product managers Interest in shaping technical direction and contributing to team development

About 3Y HealthAt 3Y Health, we are at the forefront of revolutionizing healthcare administration through our innovative AI business manager. Our mission is to simplify the complexities that consume nearly 40% of the healthcare industry's revenue. Our robust platform equips clinician entrepreneurs with the tools they need to effectively launch, manage, and expand their private practices. With over $200 million in backing from leading investors like Founders Fund, General Catalyst, SoftBank, and 8VC, we are committed to empowering independent providers with advanced AI and automation solutions that save time, foster business success, and enhance care delivery within their communities.Position OverviewWe are on the lookout for a Backend Engineer who is passionate about designing and scaling high-performance backend systems that drive our AI-first platform. The perfect candidate will have a strong background in developing distributed services using languages such as Go, Java, Python, or TypeScript. A solid understanding of modern API design and communication protocols (REST, gRPC, GraphQL) is essential, alongside a commitment to delivering reliable, secure, and scalable infrastructure.Ideally, you have experience integrating AI functionalities—be it through external AI APIs, managing machine learning inference pipelines, or supporting data infrastructure for model training. You're more than just a code contributor; you care about how your systems are deployed, monitored, and maintained in production. Experience with regulated data environments such as healthcare or fintech is a plus.This role is suited for a hands-on engineer who thrives in collaborative, cross-functional settings, works effectively with product and frontend teams, and proactively builds systems designed for scalability, compliance, and maintainability.