Senior Software Engineer - Backend

Join Palantir Technologies as a Senior Backend Software Engineer in our Application Development team, where you will leverage modern technologies to build scalable and robust applications that solve complex challenges. You will collaborate with cross-functional teams to innovate and enhance our backend systems, ensuring optimal performance and reliability.

Transforming the Future with TechnologyAt Palantir, we are pioneers in developing cutting-edge software that drives data-informed decision-making. Our platforms enable organizations to tackle critical issues—ranging from discovering life-saving treatments to optimizing supply chains and helping locate missing children—ultimately making a positive global impact.About the RoleAs a Senior Backend Software Engineer at Palantir, you will play a crucial role in designing and implementing scalable software solutions that revolutionize data utilization across various sectors. You will engage in every phase of the product lifecycle, from brainstorming and design to prototyping and final deployment. Collaborating with both technical and non-technical team members, you'll gain insights into our clients' challenges and create innovative solutions. Our culture promotes cross-team mobility, allowing you to explore diverse technologies and product dimensions while enhancing your skills and expertise.Your daily tasks will shift based on user needs and emerging technical challenges. You might find yourself architecting a new system one day and optimizing performance for low-latency operations the next. Our Product Development teams are small, focused groups that collaborate to enhance product capabilities, streamline workflows, and continuously boost software efficiency and reliability.We seek passionate engineers who are dedicated to solving real-world problems and empowering users and developers alike. If you are enthusiastic about creating reliable, high-performance systems and designing robust APIs, this is your chance to significantly influence our products and their users.Engagement at the FrontlineFoundry Software Engineers may also participate in Frontline—our exclusive program that immerses you with clients, enabling you to work directly with users and gain invaluable insights into product application and customer challenges. This unique experience positions you to tackle complex problems and develop impactful solutions for some of the world’s most critical industries.

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 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 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 Jahnel Group is hiring a Senior Mobile Application Software Engineer. This role focuses on building and improving mobile solutions alongside a skilled group of engineers. The position is open to candidates based in Schenectady, New York, or those working remotely from within the United States.

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.

Join our dynamic team at Grow Therapy as a Senior Backend Software Engineer. In this role, you will leverage your expertise in backend development to design, implement, and maintain robust and scalable applications. You will work collaboratively with cross-functional teams to drive innovation and enhance our platform, ensuring a seamless experience for our clients.

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.

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.

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.

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.

Company OverviewCredit Genie is an innovative mobile-first financial wellness platform dedicated to empowering individuals to take charge of their financial futures. By harnessing the power of artificial intelligence, we provide tailored insights and are actively creating a comprehensive financial ecosystem that offers immediate access to cash and credit-building tools. Our mission is to foster long-term financial stability for every customer.Founded in 2019 by Ed Harycki, the former founder of Swift Capital (acquired by PayPal in 2017), Credit Genie is backed by Khosla Ventures and led by industry experts from renowned companies like PayPal, Square, and Cash App. We are strategically positioned to revolutionize inclusive finance through state-of-the-art technology and user-centric solutions.Role OverviewAs a Senior Backend Engineer, you will be instrumental in shaping our platform by designing and constructing the essential systems that drive our financial products. This position offers the unique chance to architect scalable infrastructure, influence technical direction, and develop products from the ground up. Join our rapidly expanding fintech startup and make a direct and meaningful impact on both the organization and the financial well-being of our users.

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.

Join Momenti - Innovators in Interactive Video:At Momenti, we believe that content should be dynamic and engaging. Our mission is to revolutionize the way video is experienced by creating interactive, multi-dimensional video content that fosters deeper emotional connections. We are on the forefront of a content revolution that transforms static visuals into immersive moments. If you're passionate about bringing videos to life and breaking traditional boundaries, we want you on our team!Position Overview:We are seeking a passionate and experienced Senior Flutter Developer to lead the design and development of innovative mobile applications for both Android and iOS platforms. You will work with a collaborative team to create intuitive and robust applications that utilize Flutter's powerful cross-platform capabilities. Your expertise will be essential in crafting features that enhance user experiences, and your commitment to high-quality code will drive our success.Key Responsibilities:• Develop and deploy high-performing apps for Android and iOS using a unified codebase.• Write clean, maintainable, and well-documented Dart code, ensuring future scalability.• Collaborate with cross-functional teams, sharing insights and innovations to enhance our development processes.• Grasp design fundamentals to create user-friendly interfaces.• Stay abreast of emerging technologies and industry trends.Preferred Qualifications:• Experience in handling traditional media formats such as photos and videos.• Strong proficiency in object-oriented programming, design patterns, and mobile application development.• Familiarity with hybrid mobile frameworks, including React Native and Ionic.Basic Qualifications:• Bachelor's degree in Computer Science, Software Engineering, or a related discipline.• Minimum of 5 years of overall experience, including 3+ years in mobile development (iOS/Android/Web).• Proficient in Flutter or eager to learn and excel in it.• Comprehensive understanding of Frontend frameworks beyond basic utilization.• Adaptability and enthusiasm for overcoming challenges in a dynamic startup environment.• Solid grasp of mobile device capabilities and limitations.• Excellent communication and problem-solving skills.• Ability to thrive both independently and as part of a team.• Capacity to work effectively in a fast-paced environment with tight deadlines.• Commitment to writing robust, maintainable, and reliable code.

About Speechify Speechify builds tools that help remove obstacles to learning through reading. Over 50 million people use our text-to-speech products to turn materials like PDFs, books, Google Docs, news articles, and websites into audio. This approach aims to improve reading speed, retention, and comprehension for a wide range of users. Our product lineup covers native apps for iOS, Android, and Mac, plus a Chrome Extension and a Web App. We have earned recognition as Chrome Extension of the Year from Google and received Apple’s 2025 Design Award for Inclusivity. Team and Culture Speechify operates as a fully distributed company with nearly 200 team members collaborating remotely worldwide. The team brings together frontend and backend engineers, AI research scientists, and professionals with backgrounds at Amazon, Microsoft, Google, Stanford PhD programs, and startups such as Stripe, Vercel, and Bolt.

About Speechify Speechify builds tools that help people read and learn without barriers. Over 50 million users rely on our text-to-speech products to turn reading materials, PDFs, books, Google Docs, news articles, and websites, into audio. Our technology supports faster reading, better retention, and stronger comprehension. The Speechify product lineup includes apps for iOS, Android, and Mac, a Chrome extension, and a web app. We’ve earned recognition from both Google (Chrome Extension of the Year) and Apple (2025 Design Award for Inclusivity), reflecting our focus on accessible reading experiences. Team and Workplace Nearly 200 people work at Speechify, all fully remote. There is no physical office. Our team brings together frontend and backend engineers, AI research scientists, and specialists from companies like Amazon, Microsoft, and Google. Many colleagues are also alumni of top programs such as Stanford and have experience at startups like Stripe, Vercel, and Bolt.

About Us:Ether.fi stands as one of the leading cryptocurrency companies globally, managing over $10 billion in assets with a predominantly technical team of 30 members. We have achieved profitability from day one and are dedicated to developing impactful consumer applications.Our vision encompasses the evolution of genuine on-chain banking. Our innovative products—Stake, Liquid, and Cash—empower users to earn yield through diverse DeFi strategies while facilitating real-world spending via our credit cards. Public analytics for Cash and Stake are available for review.Position Overview:We are in search of a senior backend software engineer to take charge of our core backend architecture, transaction processing, and ensuring high availability. You will be part of a pivotal engineering team committed to delivering distributed, scalable, and resilient backend systems. This includes card transaction processing, low-latency APIs, microservice architectures, and on-chain data indexing—essentially, everything a neobank would aspire to build is on our roadmap.Responsibilities:Take ownership of critical components within our backend systems, enhancing functionality to boost throughput and reduce latency.Design, develop, and optimize scalable transaction processing services to facilitate high-throughput, low-latency financial transactions.Address challenges related to user friction during card transaction declines.Enhance our Cloud Infrastructure, CI/CD pipelines, automation, observability, and monitoring systems.Qualifications:Solid foundation in software engineering principles and problem-solving abilities.Proven experience in shipping remarkable products that serve thousands of real users.A minimum of 5 years of professional coding experience.A strong drive and a commitment to excellence; we are a highly ambitious team with bold goals, and we strive diligently to achieve them.Experience in web3 technologies is a plus.Perks and Benefits:Competitive salary and performance-based incentives.

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.