Staff Software Engineer - Backend at Sigma Computing | New York City

About the RoleWe are seeking a highly skilled Senior or Staff-level Software Engineer to become part of our dynamic Backend Platform team.This team is dedicated to developing and maintaining Hex's foundational compute platform, which is the core engine behind all code execution, SQL querying, and data processing within the Hex application. Our platform supports everything from the essential notebook interface and published applications to the sophisticated data functionalities demanded by our AI agents.Our dual mission is to create a compute platform that is not only incredibly user-friendly and easy to develop on but also exceptionally fast and efficient. Engineers on this team thrive at the rewarding intersection of systems architecture, API design, and advanced performance optimization.What You Will DoAs a member of the Backend Platform team, you will engage in projects that involve high technical complexity across the entire stack, from our backend data systems to the frontend of Hex’s collaborative notebook interface.Here are some of the exciting projects you might work on:Leveraging DuckDB to facilitate seamless data interoperability between Python and SQL written by our users or AI agents.Creating intelligent caching systems to enhance customer data query performance.Implementing a graph-based dependency framework to optimize multi-step execution plans.Instrumenting complex, multi-language systems to identify and resolve performance bottlenecks.Developing visualizations for the product to assist users in understanding the performance characteristics of their code.About You6+ years of engineering experience with complex, data-driven systems or applications.Expertise in Python, SQL, Jupyter kernels, and/or data warehousing systems.Strong familiarity with industry trends in data processing, databases, and efficient data architectures.A passion for delving into intricate codebases and designing elegant abstractions that enhance correctness and developer productivity.A relentless desire to analyze and optimize every millisecond of performance.A strategic mindset that aligns with business and product goals while maintaining a balance between speed and engineering excellence.Experience working in a remote-first environment and possessing strong communication skills in that context.This position is fully remote anywhere within the US Eastern timezone, with the option to work from our NYC office.

About ForaFora is the modern travel agency, empowering passionate travel enthusiasts to establish successful advisory businesses. We are revolutionizing the $100B+ travel agency sector by merging advanced technology, data, and community resources. Our business-in-a-box platform equips travel entrepreneurs with essential tools, personalized training, and a dynamic community alongside exclusive industry alliances. Our mission is clear: to support the upcoming generation of travel entrepreneurs in transforming their passion for travel into a rewarding career, whether it's full-time or part-time. We believe that individuals ranging from seasoned professionals to first-time advisors can create something both profitable and personal.Founded in 2021 by experienced entrepreneurs, Fora has seen steady growth, now boasting a team of 200+ full-time employees located in the heart of New York City. In 2025, we celebrated our $60 million Series B and C funding rounds led by Thrive Capital and Insight Partners, with contributions from previous investors including Forerunner and Heartcore Capital. We've earned accolades as a LinkedIn Top Startup 2024, Fast Company's Most Innovative Companies 2025 and 2023, and Built In 2025 Best Places to Work.We are developing the first truly integrated platform to cater to all travel requirements—harnessing the best of human expertise and technology to change how people plan and book their travel.About The RoleWe are in search of a highly skilled Senior/Staff Backend Engineer to join our team as we continue to enhance Fora's products and infrastructure. The ideal candidate will resonate with our mission and brand, be enthusiastic about our innovations, and have a strong passion for delivering high-quality software. This role will involve working on various aspects of our advisor portal, public website, content and supplier systems, internal administrative tools, and external integration projects.This position reports directly to the VP of Engineering.

Hex Technologies is experiencing rapid growth and evolution in our customer base as our products and services continue to advance. To support this momentum, we are excited to welcome a new member to our Customer Engineering team!As a Customer Engineer at Hex, you will play a pivotal role focused on post-sales support, collaborating closely with our Account Executives, Product Experts, and EPD teams to provide an exceptional technical experience for our customers. You will leverage your data and project management skills to onboard new clients effectively, ensuring they are set up for long-term success with Hex. Our Customer Engineering team is dedicated to building and implementing customer-centric frameworks, advising clients on data curation strategies to optimize Hex AI, and training end-users on the unique capabilities of our platform. Your contributions will be essential in driving expansion revenue and influencing our product roadmap.By engaging directly with our customers, you will serve as the voice of Hex Technologies, translating valuable feedback into actionable insights for our Product and GTM leadership teams. This role, reporting directly to the Head of Customer, is ideal for individuals eager to make a significant impact on a small team and innovate the future of this position.For more insights about our Customer team, feel free to explore our team page!

Join Centari - A Leader in Deal IntelligenceAt Centari, we are revolutionizing high-stakes dealmaking by unlocking the potential of private deal data. As we develop the future's deal intelligence platform for law and finance, we go beyond mere automation, embracing a data-driven approach to empower negotiation teams globally with strategic insights. Our proprietary Deal Reasoning Engine transforms complex documents into invaluable knowledge, ensuring our clients have the upper hand in negotiations.Our dynamic team consists of attorneys, financial experts, and engineers who thrive in a hybrid, cross-cultural environment. We are proud to be supported by leading enterprise AI investors, including GTMfund, former DoorDash board member Jeremy Kranz, Seamless co-founder Andy Appelbaum, Jack Altman, South Park Commons, and Recall Capital.We embrace complexity, as it is the breeding ground for innovation. If you are a builder who excels in ambiguity and embodies radical ownership, we want to connect with you.For further details, visit centari.com or follow us on LinkedIn.Role OverviewWe are seeking a Senior Backend Software Engineer to join our innovative product team. You will play a pivotal role in designing and developing Centari's core AI technology. Collaborating with fellow engineers who share a passion for action, you will write code, influence product direction, engage with clients, and drive projects from concept through to implementation.Our technology stack includes Go and React/TypeScript, utilizing state-of-the-art LLM technologies across our infrastructure, search, and persistence layers. If you have a passion for building impactful LLM applications and enjoy tackling complex challenges, we want to hear from you.

About the Role:Parker is dedicated to a bold mission: empowering individuals to achieve financial independence. We believe that by providing independent business owners with essential financial tools, we can help them scale their operations profitably.Our flagship product merges a virtual corporate card with financial software designed for profitability, enabling eCommerce merchants to accelerate growth while effectively managing their margins.To date, we have successfully raised over $180M from top-tier investors, including Valar Ventures, Y Combinator, SVB, and industry pioneers such as Solomon Hykes (Docker), Paul Buchheit (Gmail), Paul Graham (Y Combinator), and Robert Leshner (Compound).As a dynamic Series B fintech, we are rapidly expanding, boasting a robust product-market fit, a burgeoning customer base, and a team driven by technical excellence and impactful solutions.We are seeking a Senior Software Engineer – Backend to architect, develop, and scale the critical systems that underpin Parker’s financial platform. In this pivotal leadership role, you will influence backend architecture, data infrastructure, and engineering best practices during our growth phase.You will work collaboratively with Product, Infrastructure, and Data teams to deliver high-performance, reliable systems that handle billions in transactions and empower thousands of merchants. This high-impact position is ideal for engineers who thrive on ownership, relish the challenge of complex systems, and prioritize elegant, maintainable solutions.What You’ll Do:Design and scale backend services that drive Parker’s financial products and APIs.Lead architectural strategies to guarantee performance, reliability, and scalability across our systems.Develop and maintain services in a modern cloud-native environment (Node.js, PostgreSQL, Docker, Kubernetes, AWS).Collaborate with product and infrastructure teams to create secure, user-friendly APIs and data models.Promote engineering excellence through code reviews, mentorship, and architectural guidance.Identify performance issues and spearhead initiatives to enhance reliability, observability, and system design.Contribute to the advancement of Parker’s technical roadmap and long-term engineering vision.

About BettermentBetterment is a premier technology-oriented financial services firm dedicated to enabling individuals and investment advisors to realize their investment and retirement goals. Our commitment is to empower people to build wealth confidently and effortlessly. Based in New York City, we embrace a hybrid work model, requiring in-office attendance four days a week. About the RoleThe Broker Dealer serves as the foundational backbone of the Betterment platform. On any given day, we reliably transfer millions of dollars, ensuring that every transaction is meticulously vetted through a comprehensive series of risk assessments to maintain strict regulatory compliance. The efficiency and intelligence invested in this system directly enhance the value we provide to our customers. We are seeking talented engineers who can tackle complex backend scaling, software design, and optimization challenges. In the capacity of Staff Engineer within our Broker Dealer team, you will play a pivotal role in shaping our technical strategy, enhancing system reliability, ensuring timely project delivery, mentoring a team of exceptional engineers, and facilitating the scaling of our systems as we embark on our next growth phase.This position is based out of our NYC office, with a mandate of in-office attendance from Monday to Thursday. Below, we have outlined the base salary range for this role. Actual salaries may vary based on various factors including but not limited to location, experience, and performance. The listed range is just one aspect of Betterment's comprehensive compensation package for employees.New York City: $210,000 - $245,000We offer a competitive equity package, health, dental, and vision insurance, life and AD&D insurance, short-term and long-term disability coverage, employee assistance programs, commuter and parking benefits, flexible spending accounts, health savings accounts, and a 401(k) plan with employer matching, alongside a flexible paid time off policy. This position may also qualify for variable compensation in the form of a company incentive bonus.A Day in the LifeDrive the technical vision and long-term strategy of the team.Develop cutting-edge trading and money-movement technologies that empower clients to maximize their financial resources, enhancing their quality of life.Tackle challenging problems head-on. Your innovative ideas will be immediately put into action, as we believe in experimentation and iterative improvement.

Company OverviewTennr is revolutionizing the referral process in healthcare by ensuring that every patient referral is handled swiftly and efficiently. By utilizing our innovative RaeLM™ technology, we extract and manage patient information, enabling healthcare providers to capture more referrals, minimize denials, and significantly reduce delays.Position OverviewWe are on the lookout for a talented Senior Backend Engineer who is enthusiastic about systems architecture, data modeling, and large-scale workflow orchestration. This role involves designing and implementing features across our backend services to deliver exceptional customer value. You'll have the opportunity to design and optimize data schemas, build reliable backend services, and ensure smooth integration with third-party systems.Your expertise will play a vital role in high-volume workflow automation, focusing on developing and optimizing scalable data processing and machine learning infrastructure. This entails creating and maintaining complex workflows that utilize machine learning for automation, as well as leading performance optimization efforts to uphold best practices throughout the stack.Collaboration is essential—you will team up with sales and customer experience teams to integrate customer feedback and work alongside engineering colleagues to deliver robust solutions. We seek an individual who adopts a founder’s mindset, excels in systems-wide thinking, and takes the initiative to drive projects from concept to completion.The ideal candidate will possess profound experience in backend architecture, event-driven systems, and orchestration frameworks, and have a proven track record of building production-ready systems. You will be instrumental in shaping the technical foundation of our platform to ensure reliability, scalability, and adaptability as we grow.

At Bubble, our mission is clear: we aim to empower everyone to create software. We believe that anyone with a transformative idea should have the means to bring it to life. Our AI-driven visual development platform allows individuals, from first-time entrepreneurs to established enterprise teams, to transform ideas into fully functional, scalable applications across web, iOS, and Android—all without the need for coding or managing complex workflows.As the sole full-stack, cross-device no-code platform, Bubble has garnered over 5 million users across more than 100 countries, breaking down barriers to entrepreneurship and innovation worldwide.Our Achievements:Our platform is thriving, with entire VC-backed companies being built solely using Bubble. After successfully finding product-market fit and eight years of bootstrapping, we secured a $100 million Series A funding round, establishing ourselves as one of the fastest-growing companies within the New York tech ecosystem. The potential of Bubble is demonstrated by our community—individuals are not just launching products; they are creating viable businesses. For instance, Mailead turned a $10k investment in a Bubble product into a $2M valuation, while Faceless.video achieved over $1M in annual recurring revenue within a year.About the Platform Team:Our Platform team is dedicated to enhancing our scaling, reliability, and enablement capabilities as we aim to double our customer base in the coming years. Our responsibilities encompass both scalable infrastructure and our core backend systems. Success in this role means delivering timely capacity, executing workloads rapidly, and guaranteeing data scalability across diverse applications while managing costs and addressing implementation and infrastructure inefficiencies.About the Role:Join a small, elite team tackling challenges faced by the largest cloud providers. This position is an opportunity to be at the forefront of a platform that is revolutionizing the traditional engineering stack globally. Additionally, you will contribute to fostering an inclusive, effective, and collaborative engineering culture. This role requires after-hours and on-call availability.

About AKASAAt AKASA, we are on a transformative journey to redefine healthcare through the power of artificial intelligence. As a trailblazer in generative AI solutions tailored for the healthcare revenue cycle, we empower health systems to accurately capture and relay the complete patient clinical journey. By enhancing operational efficiency, we enable these systems to prioritize what truly matters: delivering exceptional patient care. With over $205 million raised in funding from esteemed investors like Andreessen Horowitz, BOND, and Costanoa Ventures, our future is bright.Now is the most thrilling time to become part of AKASA. Since launching our innovative AI-native product suite in 2024, revenue bookings have surged over 20 times. We have set records by closing the largest deals in our company’s history three times in a row, driven by the substantial advancements we've made in clinical quality and documentation accuracy—two critical areas for health system leaders.Our implementations have garnered national attention, being recognized as "one of the most comprehensive real-world applications of GenAI in healthcare finance to date" (link). Our clientele represents over $120 billion in net patient revenue and includes pioneering health systems like Cleveland Clinic, Duke, Stanford, and Johns Hopkins.Recently, we have been honored with accolades such as being named the #1 most promising healthcare RCM startup of 2025 by Black Book Market Research and listed among the fastest-growing GenAI startups to watch by AIM Research. Our CEO has been recognized as one of the “Top 50 Healthcare Technology CEOs” by the Healthcare Technology Report, and we have proudly maintained our status as a “Great Place to Work” for five consecutive years.Join us as we build on this momentum to redefine the possibilities within healthcare. We seek exceptional talent to help accelerate this mission.About the RoleAs a Senior Backend Software Engineer, you will develop AI-driven solutions for our Clinical Documentation and Medical Coding suite. Collaborating closely with product, design, and machine learning teams, you will design and implement services, APIs, and tools that enhance our SaaS offerings. You will have the opportunity to work on groundbreaking projects that directly impact healthcare delivery.

Role overview Hex Technologies seeks a Senior Product Manager based in New York City for a hybrid role, with 1-2 days per week onsite. This position focuses on shaping how organizations interact with data, emphasizing product impact over job titles. At Hex, this role is similar in scope to a Staff Product Manager elsewhere. The Senior Product Manager will guide the evolution of Hex's analytics platform, including features like notebooks, dashboards, and conversational AI. Recent launches such as Threads and the Notebook Agent have accelerated company growth. This role will play a key part in building on that momentum. What you will do Own a core product area and define a vision that aligns with customer needs. Lead early-stage discovery to identify and prioritize high-impact problems. Engage directly with customers to understand their workflows and goals, and find ways to improve their productivity. Analyze competitors and keep up with trends in data and analytics to guide product strategy. Work closely with engineering, design, and go-to-market teams to deliver and launch new features. Learn from the sales process to understand what resonates with customers and adjust product direction as needed. Requirements Minimum 7 years of experience as a Product Manager or in a related product development role, such as Solutions/Sales Engineering or customer-facing engineering. Demonstrated experience working with technical products and navigating complex systems. Comfort operating in a growth-stage startup, with the ability to deliver quickly and iterate based on feedback. Background or strong interest in data and analytics is preferred. This position requires 1-2 days per week in the NYC office. Compensation and benefits Salary range: $200,000 - $269,000 Equity Comprehensive health benefits Flexible paid time off Collaborative company culture

Company OverviewAt Tennr, we are revolutionizing the referral process in healthcare. When patients receive a referral from their doctors, the wait can often feel endless—sometimes lasting days, weeks, or even months. This delay is largely due to the overwhelming volume of referrals and the cumbersome manual processes that can hinder timely action. With our innovative technology powered by RaeLM™, Tennr ensures that every referral reaches its destination swiftly and accurately, with all necessary information in hand. We empower providers to capture more referrals, minimize denials, and eliminate waiting times.Role OverviewWe are on the lookout for a dedicated Backend Software Engineer who specializes in systems architecture, data modeling, and large-scale workflow orchestration. In this pivotal role, you will architect and implement features across our backend services and infrastructure, delivering significant value to our customers. Your responsibilities will include designing and optimizing data schemas, developing resilient backend services, and ensuring seamless integration with third-party systems.You will spearhead initiatives focused on high-volume workflow automation, emphasizing the creation and optimization of scalable data processing and machine learning infrastructure. This encompasses the design and maintenance of complex workflows that harness ML for automation, alongside performance optimization efforts to guarantee scalability and reliability throughout the stack.Collaboration is essential in this role. You will work closely with our sales and customer experience teams to incorporate valuable customer feedback, and partner with engineering colleagues to bring robust solutions to life. We are seeking someone who embodies a founder's mindset, excels in systems-wide thinking, and proactively drives projects from inception to completion.The ideal candidate will have substantial experience with backend architecture, event-driven systems, and orchestration frameworks, showcasing a proven history of developing production-ready systems. You will play a crucial role in shaping the technical foundation of our platform, ensuring its reliability, scalability, and adaptability as we continue to grow.

About Pangram LabsAt Pangram Labs, we are dedicated to ensuring authenticity through the development of cutting-edge AI detection systems. Our team is at the forefront of research, creating algorithms and products that integrate our advanced technology into everyday life.We seek individuals who are proactive, mission-focused, and passionate about innovation to join our in-person team based in Brooklyn, New York.About the RoleWe are on the lookout for a Senior Software Engineer with a backend emphasis to design, implement, and scale our production systems, which support our core technology for a rapidly expanding user base.In this senior-level position, you will be responsible for the backend infrastructure that drives Pangram's AI detection platform. You will have the autonomy to make architectural decisions, tackle complex scaling challenges, and ensure that our systems remain reliable and efficient as user demand increases. Collaborating closely with our frontend and machine learning teams, you will work primarily with our Django backend and AWS infrastructure.What You'll DoDesign and develop scalable backend services and APIs to deliver AI detection features effectively.Ensure the reliability, performance, and observability of our production systems.Architect and manage data pipelines, caching layers, and service infrastructure using AWS.Collaborate with machine learning engineers to deploy and manage machine learning models in production.Identify and resolve performance bottlenecks as user traffic and system complexity increase.Establish and enhance engineering best practices related to testing, deployment, and incident management.

Noise Labs is building tools that blend diverse online data and market insights to help users navigate uncertain times. Based in SoHo, New York City, the team is small (10 people), collaborative, and values thoughtful design and high-quality engineering. Remote work is possible. What You’ll Do Develop backend systems that power consumer features such as feeds, ranking algorithms, notifications, real-time interactions, and social elements. Build and maintain a codebase that supports both developer and automated agent confidence. Own core product services, data flows, and APIs. Design infrastructure where speed and accuracy matter, especially for settlement, pricing, and real-time financial transactions. Improve the development environment, including CI, testing, and observability. Requirements Skilled in using AI tools to speed up development. Strong judgment for balancing latency and accuracy in financial systems. Deep experience with TypeScript, relational databases, real-time communications, and event-driven data flows in finance. Comfortable working in a strict monorepo setup with clear service boundaries and conventions. Ability to independently debug and improve the development pipeline. Clear communicator for async updates, incident reviews, and team problem-solving. Bonus Points Experience with Effect-TS. Side projects, open source work, or previous startup experience. Compensation and Benefits The minimum full-time salary ranges from $160,000 to $210,000, in compliance with New York City's Pay Transparency Law. Full-time employees at Noise Labs are also eligible for additional compensation, including equity and benefits, based on the specific role.

About FLORAAt FLORA, we empower the new creative class by developing innovative tools that transform the way professionals engage with AI. Our intelligent canvas supports a diverse range of creative industries, serving clients such as Pentagram, Lionsgate, and Nike. With a dedicated team of around 20 and an impressive $52 million in funding from industry leaders like Redpoint Ventures and Menlo Ventures, we are on a mission to redefine creativity.About the RoleWe are seeking a Staff Backend Engineer to lead the development of FLORA's core platform. As the technical authority, you will be responsible for our backend architecture, including the database layer and generation infrastructure, ensuring a seamless real-time experience for our users as we scale.This is a pivotal role in our growth journey. We need a passionate backend architect who will take ownership and guide our systems to accommodate a tenfold increase in demand. You will have significant influence over our technical direction and play a crucial role in shaping our backend team’s future.Your ResponsibilitiesDesign and implement a generation orchestration layer capable of handling increasing user demand and operational volume.Enhance observability across our infrastructure to reduce failure rates and proactively address issues.Optimize our database architecture through effective schema design, indexing strategies, and migration plans.Make strategic decisions regarding vendors and architecture to enable new feature development.Collaborate closely with the CTO, Product Engineering, and Intelligence Engineering teams to ensure a robust and efficient foundation for our client features.Qualifications7+ years of experience in building scalable backend systems.5+ years of expertise in TypeScript, with a strong emphasis on type safety and error management.Demonstrated ability to design and maintain reliable systems.Familiarity with advanced queue-based architectures, including job scheduling and fault tolerance.Strong instincts for observability, with experience in system instrumentation and dashboard creation.A proven track record of leading technical initiatives, guiding teams towards innovative solutions.

Join Flex, a dynamic and innovative FinTech company based in NYC, as a Senior Backend Software Engineer. In this pivotal role, you will be instrumental in architecting, developing, and scaling backend services and APIs that empower our groundbreaking rent payment platform. Collaborate with cross-functional teams to deliver resilient and efficient systems that enhance the renting experience for users and partners alike. You will oversee every aspect of the service lifecycle, from initial requirements gathering and system architecture to implementation, testing, deployment, and ongoing monitoring. Additionally, you will have the opportunity to mentor junior engineers and promote technical best practices within the team, fostering a culture of excellence and collaboration.

About UsAt Adaptive, we are a pioneering vertical AI company with a passionate team of 40 dedicated professionals, creating an AI-native ERP solution tailored for the real estate and construction industries. Our rapid growth has attracted over 600 clients and significant funding of $26 million from prestigious investors such as Emergence, a16z, and a host of angel investors from renowned firms including Brex, Ramp, Airbase, Square, and Shopify.Why You Should Be Part of UsEmpowering Local CommunitiesJoin us in serving the small businesses that are the backbone of our communities. The local coffee shop, the new residences sprouting up, and the ADUs addressing housing shortages are all projects driven by our clients—individuals who are deeply rooted in their neighborhoods and passionate about their work. These skilled artisans and builders are the creators of spaces that foster connection and memories.Collaborate with a World-Class Team in Vertical AIOur culture is steeped in collaboration, excellence, and shared experience. With a strong foundation in finance, technology, and construction, we are positioned to lead in a booming market. With your talents, we can continue to innovate and expand our impact.Your RoleWe are thrilled to invite a Senior Backend Software Engineer to join our dynamic team at Adaptive! Your expertise will play a crucial role in shaping our engineering initiatives and ensuring the delivery of high-caliber software solutions.Reporting to the VP of Engineering, you will collaborate closely with a dedicated engineering and product team of 15, significantly contributing to the architectural design, development, and optimization of our innovative products.Key ResponsibilitiesLead the execution and successful delivery of backend and infrastructure-focused projects in collaboration with the product and design teams.Ensure that backend systems are secure, scalable, resilient, and optimized for performance as we expand.Align technical solutions with business objectives and product vision.Facilitate technical discussions and decision-making processes to ensure alignment with overall company strategies.Demonstrate best practices by writing high-quality, maintainable, and robust code.

About the Senior Backend Software Engineer Role Sigma Computing builds a high-performance platform designed for modern data needs. The engineering team is growing in New York City, NY, and looking for experienced backend engineers who enjoy solving complex problems and improving how users interact with data. This group values practical solutions that make data more accessible for everyone. What You Will Do Tackle technical challenges that come with delivering an interactive data warehouse for exploration and analysis. Work with languages and tools including Rust, Go, GraphQL, Node, and Kubernetes to build and maintain reliable systems. Develop distributed backend services, algorithms, and APIs to support Sigma's cloud applications. Investigate and resolve product or system issues, using strong analytical and debugging skills. Design and implement new software features that support a rapidly expanding user base. Participate in design and code reviews with peers and stakeholders to maintain high technical standards.

About AnthropicAt Anthropic, our mission is to design AI systems that are reliable, interpretable, and steerable. We aim to ensure that AI technology is safe and advantageous for both our users and society as a whole. Our rapidly expanding team consists of dedicated researchers, engineers, policy experts, and business leaders collaborating to create beneficial AI systems.About the Role:We are in search of seasoned, product-oriented Software Engineers to take ownership of the backend systems that enhance user experiences across our API, Claude Code, and Claude.ai. In this role, you will independently define complex, multi-month projects within ambiguous problem domains and guide your peers in making technical and product-related decisions. You will align with product management, engineering teams, and research to identify capability gaps and translate cutting-edge model advancements into deployable products. Your architectural decisions will significantly impact the reliability and scalability of systems serving hundreds of thousands of global users, including internal teams, while you remain actively engaged with the code and our models.We are currently hiring for multiple teams. Team assignments will be made post-interview, considering your preferences and experience alongside organizational requirements. This flexible approach allows us to pair talented engineers with backend product initiatives where they can make the most significant impact and experience the most growth:API Core: You will develop and enhance the foundation of the Claude API—systems that deliver Claude's intelligence to developers ranging from startups to large enterprises. You will manage the performance, reliability, and efficiency of our core serving path, ensuring users derive maximum speed and value from our models. Collaboration with inference and safeguards will be key to optimizing the entire stack.API Capabilities: You will empower developers by integrating frontier model capabilities into the Claude API, overseeing core features such as vision, tool usage, and computer interaction. Your responsibilities will include launching new models and delivering the building blocks that enhance Claude's capabilities with each release, working directly with research and inference to productionize future advancements.API Knowledge: Your focus will be on transforming Claude into a true knowledge worker by ensuring the model has timely access to the right information. You will facilitate secure data access for developers, enabling Claude to automatically process and retrieve relevant data as needed.

Playground builds software to help child care providers manage their businesses more efficiently. The platform supports thousands of schools across the United States, with a focus on making high-quality child care more accessible. The company has secured millions in funding and holds several statewide contracts, reflecting strong momentum in the education technology space. Playground’s founders have been recognized on the Forbes 30 Under 30 list for their work in child care technology. The team values a culture where ownership and collaboration are central. Engineers at Playground regularly work together on challenging projects that have a direct impact on customers and the broader child care sector. Role overview This Staff Software Engineer position is based in New York City. The role centers on building and improving Playground’s core products as the company grows. Engineers here contribute to significant technical decisions and help shape the future of the platform. What you will do Work on complex software projects that support child care businesses nationwide Collaborate closely with other engineers and teams to deliver high-impact solutions Take ownership of technical challenges and contribute to a culture of shared responsibility Requirements Experience leading or contributing to large-scale software projects Ability to work effectively in a collaborative, team-driven environment Based in or willing to work from New York City