Backend Software Engineer - Infrastructure

Join a Transformative Force in TechnologyAt Palantir, we create groundbreaking software that revolutionizes data-driven decision-making and operational efficiency. Our platforms enable partners to combat critical challenges—from developing life-saving medical treatments to predicting supply chain disruptions and locating missing persons.Position OverviewAs a…

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 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.

Clear Street develops technology that opens access to a wide range of assets for sophisticated investors in global markets. The company’s cloud-native platform is built for speed and transparency, supporting both institutional and modern investment needs. Clients use tools and services previously available only to major institutions, now adapted for today’s markets. The team combines experienced engineers and finance professionals to create essential solutions for the financial sector. Engineers at Clear Street work on platforms that serve institutional clients and drive technical progress in finance. The team values collaboration, creativity, and a strong work ethic, supporting growth with modern technologies that have a direct impact on the industry. Role overview The Senior Backend Software Engineer role centers on building backend systems for financial applications, with a focus on digital assets. This position involves designing, developing, and supporting scalable backend services for trading platforms, payment systems, and digital asset infrastructure. The work blends traditional finance with decentralized technologies and calls for rigorous engineering in a rapidly changing environment. Key responsibilities Design and implement backend services and APIs for financial applications. Build and maintain systems for trading, settlement, and asset custody, covering both fiat and cryptocurrency. Integrate with blockchain networks such as Ethereum and Bitcoin, along with third-party financial APIs. Ensure systems are reliable, secure, and scalable for high-throughput operations. Develop and maintain data pipelines to support efficient information flow. More information about Clear Street is available at https://clearstreet.io.

Polymarket is a leading prediction market platform where users trade on the outcomes of real-world events. The platform covers a wide range of topics, from politics and economics to sports and culture. By removing centralized control, Polymarket aggregates opinions into transparent, market-based probabilities that reflect collective expectations. With rapid growth underway and a target of $21B in trades by 2025, the company aims to become a trusted source of truth in global media. The team is expanding to support this mission. Role overview The Senior Backend Engineer, Onchain, joins the Onchain Execution team. This group builds and maintains the systems that connect Polymarket products to the blockchain. The work includes relayers, transaction pipelines, RPC infrastructure, and settlement logic for every trade. The role involves solving technical problems at the intersection of distributed systems, blockchain protocols, and backend engineering at scale. What you will do Develop and maintain onchain execution infrastructure: Design and manage relayer systems, transaction pipelines, and settlement logic that support Polymarket's markets. Architect high-performance backend systems: Build scalable APIs and services to handle high transaction volumes and real-time data with low latency. Manage RPC and chain connectivity: Implement and optimize endpoints and integrations to keep Polymarket reliably connected to EVM networks. Enhance performance and reliability: Improve throughput and efficiency for onchain systems as transaction volumes grow. Strengthen security and fault tolerance: Apply best practices for secure, highly available distributed systems in onchain environments. Elevate code quality: Participate in code reviews and help maintain high engineering standards across the team. Requirements Extensive experience in backend software engineering, including clean code, strong database skills, and well-designed APIs. Deep understanding of EVM networks and blockchain protocols. Background in building or maintaining relayer systems, scalable RPC infrastructure, or contributing to core blockchain node software. This position is based in New York.

Why We Need YouIn the past year, GovEagle has rapidly established itself as the preferred vendor among the leading government contractors across the nation. Our platform has seen a staggering 10x increase in usage, with our AI agents streamlining the process of shredding requirements, constructing compliance matrices, and drafting proposals in mere hours instead of weeks.To sustain this growth trajectory, we are in search of a Senior Backend Engineer to enhance and optimize the essential systems that power our platform. Your responsibilities will encompass the entirety of our backend, from optimizing API performance to enhancing AI pipeline efficiency and infrastructure. You will ensure that our systems remain fast, reliable, and scalable, as some of the largest defense contractors in the world depend on GovEagle daily.What You're Signing Up ForProfiling and optimizing critical paths within our backend to maintain swift API response times and efficient AI pipelines as workload complexity and customer volume grow exponentially.Identifying and resolving bottlenecks in our database layer, background job orchestration, and asynchronous processing, particularly for extensive LLM workloads.Enhancing our existing Grafana stack to augment logging, metrics, tracing, and alerting, enabling us to comprehend system behavior in production and preemptively address issues before they affect customers.Designing infrastructure improvements to accommodate increased workloads, more concurrent users, and increasingly complex AI pipelines without compromising latency or reliability.Streamlining our build, test, and deployment pipelines to empower the team to deliver faster and with greater confidence.Overseeing our on-call processes, SLOs, and incident response playbooks to make production maintenance uneventful.Collaborating with the CTO as a thought partner on backend architecture decisions. Evaluating trade-offs, drafting RFCs, and raising the engineering standards across the team.

About PolymarketPolymarket stands as the largest global prediction market platform, empowering individuals to share their insights on real-world events through trading on outcomes spanning politics, economics, sports, culture, and current affairs. Functioning as a decentralized peer-to-peer marketplace without a central 'house', Polymarket aggregates a wide array of opinions into clear, market-driven probabilities that reflect collective expectations about future events.Our rapid growth is evident as we approach $21 billion traded in 2025, alongside increasing adoption as a reliable alternative news source. Our vision is to emerge as a pervasive beacon of truth within global media, driven by a swift, dependable, and highly technical market infrastructure.About the RolePolymarket is in search of a talented backend engineer to join us in constructing and enhancing the essential exchange infrastructure that fuels our markets. This position emphasizes the development of high-performance, low-latency backend systems that must operate correctly, swiftly, and resiliently under the demands of real-world trading scenarios.You will play a vital role as a primary contributor, collaborating with other senior engineers to design, implement, and refine the systems that form the core of Polymarket's exchange. This position offers significant ownership with minimal bureaucratic hurdles and a strong focus on results.Your ResponsibilitiesWe are seeking an experienced backend engineer who thrives on close-to-the-metal work and tackling challenging distributed systems problems.Develop the Exchange Backend: Architect and build scalable, low-latency backend services that drive the Polymarket exchange, utilizing C/C++ or other performance-oriented programming languages (Go, Rust, Java).Enhance Performance & Scale: Analyze, tune, and troubleshoot systems with an emphasis on latency, throughput, memory usage, and correctness in production environments.Architect Distributed Systems: Create and maintain robust APIs, data pipelines, and event-driven architectures using messaging and streaming technologies (Kafka, Pulsar, RabbitMQ).Ensure Reliability & Operations: Strengthen security, availability, performance, and scalability within backend systems, while actively participating in diagnosing and resolving production challenges.Cross-Functional Collaboration: Work in close partnership with engineers across product, infrastructure, and data teams to ensure seamless integration between the exchange and the overall platform.Enhance Code Quality: Engage in code reviews, design discussions, and architectural debates to drive high standards in software development.

About TitanTitan is an award-winning wealth management platform on a mission to revolutionize the financial landscape by making wealth advisors accessible to everyone, not just the ultra-wealthy. By leveraging cutting-edge technologies such as artificial intelligence, we empower our advisors with tools that enhance their capabilities, allowing them to serve a diverse clientele. Backed by notable investors including a16z, General Catalyst, and Sam Altman, we proudly manage over $1 billion in assets nationwide.Why Join TitanAt Titan, we are committed to creating an enriching work environment that promises unparalleled growth and fulfillment for the right candidate.Visionary Goals: Join us in our ambitious pursuit of democratizing wealth management, enabling lasting wealth growth across generations.Timely Relevance: The emergence of LLMs presents an unprecedented opportunity to reshape personalized wealth management, propelling our mission forward.Significant Contribution: Be part of a small, dynamic team where your contributions will have a monumental impact on our growth trajectory.Collaborative Culture: We foster a vibrant, in-person working environment where team collaboration thrives, including daily engagement with our founders.Competitive Compensation: Titan offers attractive salary packages and equity options that reflect our commitment to team ownership.Renowned Investors: Join a company supported by some of the most respected names in the industry, including a16z and Y Combinator.Role OverviewAs a Senior Backend / Infrastructure Engineer at Titan, you will play a pivotal role in crafting the systems that drive our next-generation Registered Investment Advisor (RIA) platform, set to scale beyond our current $1B in assets under management (AUM). Collaborating with seasoned professionals from Google and Meta, you will be responsible for architecting, building, and optimizing our core backend services, trading systems, real-time APIs, data pipelines, and automated workflows—all while ensuring security, scalability, and resilience. Your technical expertise will significantly influence platform reliability and performance as we grow.

About UsAt Credal, we are dedicated to leveraging cutting-edge AI technology to empower those who are shaping a better tomorrow.We enhance the most sophisticated operations of leading institutions, seamlessly integrating security and governance throughout our offerings. Our esteemed clientele includes notable organizations such as the U.S. Department of Health and Human Services, MongoDB, Comcast NBC Universal, Lattice, Wise (TransferWise), Checkr, and incident.io.Having successfully raised over $10 million, we have a significant runway to support our vision. Join our team of Thoughtful Doers™ hailing from industry giants like Palantir, Cruise, Meta, Uber, and Google. At Credal, we foster a collaborative in-person environment at our spacious NYC office, where meals are provided.

About ForaFora is a revolutionary travel agency that is transforming the $100B+ travel industry by providing passionate individuals with the tools to establish successful advisory businesses. Our innovative platform merges cutting-edge technology, comprehensive data, and a supportive community, enabling countless entrepreneurs to thrive on our platform. This all-in-one solution offers travel advisors everything they need to launch and scale their businesses, from state-of-the-art tools and personalized training to a vibrant community and exclusive industry partnerships. Our mission is clear: to empower the next generation of travel entrepreneurs to turn their passion for travel into a rewarding career, whether full-time or part-time. We believe that anyone, from experienced professionals to first-time advisors, can create something both profitable and meaningful.Founded in 2021 by expert entrepreneurs, Fora has steadily grown to include a talented team of over 200 full-time employees located in the heart of New York City. In 2025, we proudly announced our $60 million Series B and C funding rounds, led by Thrive Capital and Insight Partners, with contributions from previous investors such as Forerunner and Heartcore Capital. Our achievements have been recognized as we were named a LinkedIn Top Startup for 2024, Fast Company’s Most Innovative Companies for 2023 and 2025, and Built In’s Best Places to Work for 2025.We are on a mission to create the first truly unified platform for all travel needs, harnessing the best of human expertise and technology to redefine how people plan and book their travel.About The RoleWe are in search of an experienced Senior/Staff Backend Engineer to join our Finance Pod, responsible for building and maintaining the intricate systems that facilitate advisor payments at Fora. This pod manages the comprehensive advisor payment system and user experience, encompassing booking data ingestion, commission collection, and payouts, and is rapidly expanding into innovative fintech and payment products.In this position, you will design and implement scalable systems that ensure payouts are swift, precise, and transparent, collaborating closely with Product and Operations teams to bring financial data to life within the Advisor Portal and our internal tools. You will play a key role in developing and enhancing services that manage booking ingestion, payout logic, reconciliation, and integrations with payment processors like Stripe. Projects may include creating intelligent visualizations for the Payments page and more.

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.

At Highlight, we're creating a revolutionary shared intelligence layer tailored for today’s dynamic workforce. Our platform integrates context across all team members and tools, effectively dismantling information barriers. It adapts to your organization, intelligently routing knowledge and consistently automating workflows.About the PositionWe are in search of a Senior Backend Software Engineer to be responsible for essential backend infrastructure, including systems for team management, permissions, and integration-driven workflows. Your primary focus will be to enhance and scale our systems with a strong emphasis on performance, reliability, and an exceptional user experience.This role is perfect for an individual passionate about the convergence of desktop software, native development, and AI integration, and who thrives in a collaborative, fast-paced environment.Please note: This position requires on-site presence at our New York City office five days a week.Key ResponsibilitiesDevelop backend systems that facilitate product expansion, including multi-tenant architectures, permissions, and internal/admin tools.Design and manage asynchronous processing systems for background tasks and workflow orchestration.Optimize system performance and cost through practical techniques such as caching, batching, and efficient data access patterns.Create secure and extensible integration frameworks, including authentication mechanisms, APIs, and third-party connectors.Enhance backend engineering standards through observability, rigorous testing, incident preparedness, and operational best practices.Collaborate across departments to deliver features from inception to deployment while designing durable, extendable, and easily adjustable backend systems.Candidate ProfileWe are looking for someone eager to shape the AI-driven user experience of the future. We value extreme ownership, accountability, and initiative.This role is ideal for individuals who enjoy building scalable systems and enhancing observability while minimizing costs through practical optimizations such as caching, batching, and queue-based processing. You will work closely with product and machine learning teams to ensure Highlight remains reliable and high-performing as we scale.

Join Spotify as a Backend Engineer specializing in Music Technology, where you will play a pivotal role in shaping the future of music streaming. Collaborate with a dynamic team to develop robust backend systems that enhance user experience and streamline our music services.As part of our innovative engineering team, you will work on scalable systems and contribute to exciting projects that redefine how millions of users enjoy music. Your expertise will help us optimize performance and ensure the reliability of our platform.

Join Match Group as a Staff Backend Engineer focused on driving growth through innovative solutions. You will work collaboratively with cross-functional teams to design and implement robust backend systems that enhance user experience and support our expanding user base.

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 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.

Why Join Auctor?At Auctor, we are pioneering the AI framework for professional services and software implementation. Imagine us as the intelligence behind the most skilled solution engineers, forward-deployed engineers, and onboarding teams—streamlining documentation, discovery, and decision-making that influences over $400 billion in service work. We are targeting one of the most significant software sectors of this decade.Position OverviewAs a Senior Backend Software Engineer at Auctor, you will take charge of engineering initiatives across our software suite. Collaborating closely with our operations, GTM, and deployed services teams, you'll develop cutting-edge systems that deliver exceptional value to our clients.We seek individuals eager to engage in the most impactful work of their careers—those who are intelligent, quick, and relentless. This is a role that demands speed, execution, and the opportunity to create something remarkable.This position is based in New York, NY, requiring in-person attendance five days a week.

Who Are We?Postman is the leading API platform globally, empowering over 45 million developers and 500,000 organizations, including 98% of the Fortune 500. We are dedicated to facilitating the creation of an API-first world by enhancing every stage of the API lifecycle and fostering seamless collaboration, allowing users to build superior APIs more efficiently.Headquartered in San Francisco, we have offices in Boston, New York, Austin, Tokyo, London, and Bangalore, where Postman originated. As a privately held company, we are backed by prominent investors including Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Discover more about us at postman.com or connect with us on X via @getpostman.P.S: We highly encourage exploring The 'API-First World' graphic novel to gain insight into our vision and mission at Postman.The OpportunityAt Postman, we are transforming how developers design, track, and automate API workflows through Postman Flows, a robust visual programming tool aimed at simplifying the development and sharing of API-driven applications. With an intuitive drag-and-drop interface, Postman Flows empowers teams to collaborate and demonstrate their APIs, regardless of their technical expertise.We are in search of a dedicated Software and Systems Engineer to enhance and maintain the Flows runtime system, which executes mission-critical automations in the cloud, prioritizing low latency, high throughput, and exceptional availability. You will be instrumental in the development, deployment, and operation of our backend services and infrastructure within a Kubernetes-based cloud setting.The ideal candidate will possess a passion for hands-on engineering as we ship and iterate weekly to prepare our product for General Availability (GA). Additionally, this role includes mentoring fellow engineers, making pivotal technical decisions, and influencing improvements across teams spanning multiple time zones.If you are motivated to deliver high-quality solutions, we want you on our team!Learn more about our Flows product vision here.

Join our dynamic team at Flex Ltd. as a Senior Backend Software Engineer! In this pivotal role, you will be responsible for designing and implementing robust backend solutions that power our innovative applications. You will collaborate with cross-functional teams to enhance system performance, scalability, and user experience.We're looking for a passionate engineer who thrives in a fast-paced environment and is eager to tackle complex challenges. Your expertise will drive the development of high-quality software that meets the needs of our clients.

iCapital Network is hiring a Senior Backend Engineer at the Senior Vice President level in New York, NY. This position plays a key role in shaping the technology stack and contributes directly to the company’s mission of improving financial services for clients. Role overview This is a leadership role with a focus on backend engineering. The Senior Backend Engineer will influence the technical direction of the team and help guide architectural decisions for backend systems. What you will do Lead the design and development of scalable backend systems Collaborate with cross-functional teams to deliver solutions that enhance client experiences Guide technical decisions and help set the direction for backend architecture Location This role is based in New York, New York, United States.