Senior Full Stack Software Engineer at ether.fi | New York

About Us:ether.fi is a leading player in the cryptocurrency sector, managing over $10 billion in assets with a dedicated team of 30 technical experts. Profitable since our inception, we focus on developing genuine consumer applications.We envision a future of on-chain banking with innovative products like Stake, Liquid, and Cash, allowing users to earn yields through diverse DeFi strategies and utilize their assets in the real world via our credit cards. Explore our public analytics for Cash and Stake.Position Overview:We are seeking a Senior Full Stack Software Engineer to take ownership of feature delivery for our core products. This position is integral to our engineering team, focusing on the complete development of user-facing features, including on-chain portfolio reporting, corporate card functionalities, DApp interfaces, banking transfers, and notification systems. Our roadmap includes everything a neobank would build.Responsibilities:Lead end-to-end feature delivery, working on both backend and frontend components.Collaborate with designers to define the scope and break down technical requirements for new features.Partner with fellow engineers to produce high-quality code and uphold engineering standards.Monitor core business metrics such as user adoption, revenue, and error rates.Qualifications:Solid foundation in software engineering principles and problem-solving skills.Proven track record of successfully launching products with a substantial user base.5+ years of professional coding experience.Motivated, hardworking, and committed to achieving ambitious goals as part of a driven team.Experience in the web3 space is a plus.Benefits:Competitive salary, performance-based bonuses, and token allocation grants.Flexible working hours and opportunities for professional growth.Access to comprehensive health benefits and wellness programs.

Join our dynamic New Patient Experience team at Talkiatry as a Senior Full-Stack Engineer. This innovative product team is dedicated to enhancing the patient journey from their initial interaction to their first appointment. By optimizing how new patients find, assess, and begin their care with us, we contribute significantly to Talkiatry's mission of making mental health services more accessible.In this pivotal role, you will spearhead the development of impactful features and systems aimed at increasing patient conversion rates and simplifying the onboarding process, ensuring a smooth digital start to care. You will work closely with product, design, and data teams to create robust, extensible, and maintainable systems using TypeScript, running on AWS.

Join Cape as a Senior Full Stack Software EngineerCape, founded in early 2022 by experts from Palantir and Anduril, is on a mission to revolutionize privacy and national security in the wireless domain. Our CEO's experience leading Palantir's US national security business ignited a passion for securing mobile privacy, and we are committed to empowering individuals—especially those in national security—by giving them control over their data.At Cape, we transcend the role of a typical cellular service provider; we are at the forefront of a privacy-centric movement that begins with the devices people use daily. Our innovative cellular network is designed to help users regain control over their personal information, which we believe is essential for a secure and private digital experience.We understand that our location, our movements, and our relationships are deeply personal and must be kept confidential. Privacy is not about restriction; it's about enhancing capabilities through advanced features. With backing from Andreessen Horowitz and other top-tier venture capitalists, we are excited to expand our team.About Our TeamOur team consists of relentless builders who are constantly pushing the boundaries of technology and bringing groundbreaking ideas to fruition. At Cape, innovation is embedded in our culture. We empower our team members to achieve excellence and make significant contributions. As part of our team, you will collaborate with an eclectic mix of talented engineers and staff, fostering dynamic interactions across the organization.About the RoleAs a Senior Full Stack Software Engineer at Cape, you will play a critical role in providing secure and resilient connectivity solutions. You will help build a system that prioritizes security and privacy, distinguishing our users from traditional telecom environments. This includes developing a top-tier signaling firewall to detect and mitigate malicious signaling threats, identifying fake base stations, and preventing SPAM and Smishing attacks. You will also ensure transparency by alerting users about potential threats from hackers or state actors. Your fluency across the full technology stack will grant you substantial ownership and the ability to lead these initiatives.

GovWell builds AI-powered software to help local governments deliver better, faster services. By replacing outdated municipal systems, the team aims to cut processing times for permits and licenses by up to 90 percent. Since its founding in 2023, GovWell has enabled over 5,000 essential workflows for agencies in more than 30 states, reaching millions of residents. The company is headquartered in New York City and has raised $10 million in seed funding from Work-Bench and Bienville Capital. For more on GovWell’s story, see their recent feature in TechCrunch. Why work at GovWell? Meaningful mission: GovWell focuses on building AI-driven solutions that modernize government systems, aiming to improve how citizens interact with public agencies. WATCH: Mission & Vision with CEO & Co-Founder Troy LeCaire Real-world impact: The platform serves as the official record for government services, directly affecting millions of Americans. Projects range from streamlining small business permitting to supporting affordable housing initiatives. Startup growth: GovWell has achieved 4X ARR growth in the past year and continues to expand quickly. Early team members work closely with founders and take ownership of significant projects. Role overview The Full-Stack Software Engineer will help build and improve GovWell’s core platform, which powers faster and more efficient government services. This role involves working across both frontend and backend systems to design, develop, and launch new features that support government operations and resident access. Reporting directly to the CTO and Co-Founder, Ben Cohen, this engineer will take responsibility for key product areas and have the chance to shape the platform in a growing company based in New York.

Join Claylabs as a Full Stack Software Engineer!At Clay, our mission is to empower organizations to bring their growth ideas to fruition. We believe that growth is a creative journey rather than a mere formula. Identifying and engaging with your ideal customers requires unique insights and continuous innovation. In a rapidly evolving AI landscape where tactics can be easily replicated, creativity stands as the true differentiator.We have successfully partnered with thousands of clients, including industry leaders like Anthropic, Notion, Google, and Ramp, helping them leverage unique data, insights, and AI-driven research to effectively market their offerings.As of 2025, we celebrated exceeding $100 million in revenue and secured a $100 million Series C funding round, achieving a valuation of $5 billion. Our growth is supported by esteemed investors such as Sequoia, CapitalG, and First Round. Additionally, we have successfully executed our second employee tender offer and initiated a community equity round for our customers, agency partners, and club members.Here are some key highlights about Clay:Our community consists of over 11,000 customers, 150+ integration partners, 125+ agencies, 50+ Clay clubs, and 30,000 members on Slack.Our culture is vibrant both inside and outside of work, featuring team members who are DJs, activists, writers, marathoners, and more.All employees have the opportunity to work alongside world-class coaches specializing in creativity, management, and more.Our guiding principles — including negative maintenance and non-attached action — shape our approach to work. Learn more about them here.You can read more about our achievements in the New York Times.

About LiveFlowAt LiveFlow, we're revolutionizing the accounting and finance landscape by developing a cutting-edge platform that empowers lean finance teams to efficiently manage expansive enterprises.Having successfully secured over $21 million in funding from prestigious investors such as Y Combinator, YC Continuity, Valar, Seedcamp, WndrCo, Moonfire, and Bradley Horowitz (VP Product, Google), we've positioned ourselves as a frontrunner in the industry.Our platform is already assisting thousands of companies in optimizing their financial operations, evidenced by our hundreds of 5-star ratings on G2.Our founding team boasts experience from Europe's fastest-growing fintech, Revolut, which fuels our ambition and innovation. Why Join Our Team?At LiveFlow, you have the unique opportunity to shape your role based on your skills, passions, and aspirations.We encourage you to work intelligently, share your insights, and engage deeply with our mission and methodologies. Your contributions will be essential in cultivating an inspiring workplace culture and scaling our organization as we grow.Are you a problem solver? Our enthusiastic customers are eagerly waiting for the innovative solutions you'll bring forth. We face a multitude of stimulating challenges—both technical and non-technical—and while we may not have all the answers yet, we're committed to asking the right questions every day.If you take pride in customer satisfaction and are excited to contribute to a product that brings value, while maintaining a balance between detail and progress, we want to hear from you!

Role Overview Via Transportation, Inc. is hiring a Senior Full Stack Software Engineer in New York, NY. This role focuses on building and maintaining applications that support urban mobility. The work directly impacts how communities move and connect. What You Will Do Lead the development of software applications from design through deployment Work closely with teams across engineering, product, and design Implement and maintain software solutions that serve real-world transportation needs Collaboration This position involves frequent collaboration with colleagues from different disciplines to deliver reliable, scalable products.

CVector is dedicated to revolutionizing the energy and manufacturing sectors through real-time economic optimization and advanced AI predictions. Our mission is to empower industrial facilities to make informed decisions that enhance cost efficiency, reliability, and profit margins.Every minute, these facilities encounter critical decisions influenced by diverse factors, including asset constraints, live process realities, feedstock prices, product pricing, demand fluctuations, and market dynamics. We integrate these distinct elements into a unified decision-making layer that accurately forecasts upcoming trends, simulates potential scenarios, and optimizes operational strategies, enabling plants to operate at their maximum economic potential daily.This role is based in our vibrant New York City office, where you will work four days a week. CVector serves clients nationwide and manages sophisticated systems in high-stakes industrial environments.Position OverviewIn the capacity of a Senior Full Stack Software Engineer, you will be instrumental in the design, development, and enhancement of CVector’s core platform, which includes our web applications, back-end data pipelines, and industrial gateways. Your contributions will facilitate the delivery of robust and user-friendly experiences focused on real-time data visualization and operational insights in demanding settings, such as power generation facilities and chemical plants.We seek a candidate with strong technical acumen, a commitment to delivering high-quality software, and a focus on product development. You should be adept at navigating the full technology stack, rapidly acquiring new skills, and taking ownership of complex challenges in a dynamic startup atmosphere. Collaboration with fellow engineers will be vital, along with opportunities to steer technical projects and shape architecture and product strategy.Key ResponsibilitiesLead the development of a real-time data visualization platform to craft compelling visual representations of data and integrate AI-powered insights.Design, implement, and deploy features and resolve bugs across the entire software stack, including front-end interfaces to back-end services and databases.Work in tandem with product and design teams to transform user requirements into precisely defined, high-quality technical solutions.Guarantee system reliability and maintainability through comprehensive automated unit, integration, and end-to-end testing.Participate in an on-call rotation and enhance operational tools and observability.Engage in technical decision-making, architecture discussions, and code reviews.Guide junior engineers and contribute to elevating the overall quality and productivity of the team.Occasionally travel to client sites to gain direct insights into real-world applications and constraints.

GovDash is at the forefront of empowering businesses to secure and manage government contracts that drive progress for American interests.Our cutting-edge AI platform provides a comprehensive, secure, and workflow-oriented solution that streamlines the entire contracting lifecycle—from identifying opportunities and capturing bids to executing proposals, winning contracts, and managing operations post-award.In 2025, GovDash played a pivotal role in helping clients win contracts worth over $5 billion. With $42 million in funding, we are poised to accelerate product development and expand our reach across the nation.About the RoleWe are seeking a passionate Software Engineer (Product) to enhance GovDash's core product offerings. This position is ideal for engineers who relish the challenge of working across the entire tech stack, taking ownership of product features from inception to deployment, and delivering high-quality software that our customers depend on daily.You will have the opportunity to engage with various product domains, developing reusable components, user-friendly interfaces, and robust backend services that support critical workflows for government contractors. Although our teams may specialize in different areas, this role emphasizes full-stack product development, a focus on customer impact, and adherence to strong engineering principles.This role offers a competitive base salary of $160,000 plus equity and is based in New York City.

Position OverviewJoin our innovative team as a Senior Full Stack Engineer I at DoubleVerify, where you will play a pivotal role in enhancing our full-stack billing system. Your expertise will help our clients leverage DoubleVerify’s extensive suite of products through the development of robust backend services and user-friendly frontend applications. We are a technology-driven organization that thrives on solving complex challenges with cutting-edge solutions. In this collaborative environment, you will liaise with various development, product, and client services teams, focusing on delivering exceptional user experiences.

Patlytics develops AI-powered tools for patent intelligence, supporting legal and intellectual property teams as they protect and monetize IP. The platform relies on generative AI and large language models to simplify patent workflows, including drafting and litigation, and provides timely, accurate insights. After raising $40M in Series B funding led by SignalFire, Patlytics is expanding its product suite and growing its global presence. The company values diversity, creativity, and an entrepreneurial approach. Curiosity and a drive to improve IP intelligence shape the team’s work. Role overview The Full Stack Software Engineer will build and deliver features across the platform’s stack. This platform is trusted by Fortune 500 legal and IP teams. The position plays a part in reshaping how intellectual property is managed and protected.

About EliseAIAt EliseAI, we are dedicated to transforming critical sectors such as housing and healthcare. These are fundamental needs that everyone deserves, yet they often come with unnecessary hurdles. By seamlessly integrating AI agents into existing workflows, we enhance efficiency, lower costs, and elevate the overall experience for all users.Housing: We revolutionize the renting experience by simplifying apartment tours, lease signings, maintenance requests, and ongoing communication with property management—bringing all essential services into a single platform.Healthcare: We streamline the process of scheduling appointments and completing intake forms, facilitating better communication between patients and providers, so everyone can prioritize health over paperwork.By working with EliseAI, organizations can minimize manual tasks, enhance accessibility, and provide a flawless user experience across vital services. We are excited to have recently secured a $250 million Series E funding led by Andreessen Horowitz to propel our mission forward.About The RoleAs a Senior Full Stack Software Engineer at EliseAI, your work will transcend mere coding; you will develop software that enhances operational efficiency and positively impacts lives. Rather than adhering to a predefined path, you will be paving the way. Each day will present opportunities to strategize on scaling our solutions and executing them effectively. Collaborating within a small team of exceptional engineers, you will take on substantial responsibilities, lead initiatives, and witness your concepts come to fruition—essentially functioning like a startup within a startup.Key ResponsibilitiesCollaborate within a cross-functional team alongside frontend, backend, and machine learning engineers, as well as product managers, to design and deliver engaging user-facing products and features while enhancing existing functionalities.Play a pivotal role in propelling our product development by spearheading the launch of beta offerings and actively engaging clients for feedback and iterative improvements.Develop frontend solutions that address complex functionalities with a strong emphasis on user experience.Focus on creating modular components that are reusable across various parts of the application.

At Fortell, we are pioneering innovative AI-driven hearing technology that transforms individuals' auditory experiences and connections with their environment. Our advanced hearing aids, engineered with bespoke silicon and cutting-edge hearing science, empower users to hear with exceptional clarity and confidence.We adopt a fast-paced, intentional approach to product development, always prioritizing the needs of those we serve. Our team comprises outstanding professionals from technology, science, design, and healthcare backgrounds, and we are just beginning our journey. If you have a passion for shaping the future of hearing technology, we would be thrilled to connect with you.We are looking for a talented Full Stack Software Engineer to spearhead the creation of intricate desktop applications that integrate wireless medical devices, mobile applications, and cloud APIs. This position is perfect for someone who excels at navigating the convergence of hardware, software, and machine learning systems, and is eager to develop groundbreaking products that redefine healthcare technology.This role is based in New York City and follows a hybrid work model, with team members expected to be in the office three days a week.

At Via, we are dedicated to revolutionizing public transportation, making it more accessible to jobs, healthcare, and education for everyone. Our innovative platform serves as the technological backbone for contemporary transit networks, transforming outdated and fragmented public transport systems into intelligent, data-driven, and efficient digital networks. With numerous agency partnerships across the globe, Via stands out as a leading provider of transportation technology and services. As a Full Stack Software Engineer on the Remix engineering team, you will play a crucial role in developing software solutions that cities rely on to design and enhance public transport systems, prioritizing accessibility, equity, and sustainability. You will collaborate closely with designers, product managers, and customers, taking ownership of features from concept through production, while influencing both our development processes and product direction. Our technology stack includes Typescript with React and Mapbox, along with Rails, Python, and Postgres with PostGIS. However, we prioritize strong full-stack fundamentals and a user-centered approach to product development.

About Amperos HealthAmperos Health stands at the forefront of transforming revenue cycle management (RCM) in the healthcare sector. As a pioneering provider of multi-modal RCM solutions, we empower healthcare clinics to enhance their revenue collection processes with speed and efficiency. Established in 2023 and supported by prominent investors including Uncork, Neo, Nebular.vc, and industry experts from OpenAI, Stripe, and Twilio, our mission is to bridge the gap between healthcare providers and payers. Our innovative vision is to deploy an AI-driven workforce that minimizes administrative burdens and accelerates revenue flow.About the RoleAs we develop our advanced platform to streamline administrative workflows for healthcare providers, we invite talented full stack engineers to join our team. Your role will involve creating an integrated workflow platform, developing and productizing AI agents, and exploring the interaction between humans and AI within our software. Collaborating closely with our clients, you will address significant inefficiencies in RCM workflows.At Amperos, you will engage with cutting-edge AI challenges and leverage the latest technologies to prototype comprehensive solutions for workflow optimization and productization.What You’ll DoCollaborate with clients to design and implement end-to-end agentic workflows.Develop features utilizing voice AI, browser agents, and generative AI technologies.Create traditional full-stack functionalities, tools, and automations to support agentic products.Take the lead on projects from inception through execution.Gain in-depth knowledge of RCM workflows to better empathize with users and inform sound engineering decisions.Who We’re Looking ForFull-stack engineers with a strong product mindset, particularly with backend expertise in developing LLM products.Proactive problem solvers who engage directly with customers rather than merely following specifications.Individuals eager to innovate in a tech-underrepresented industry and delve into healthcare billing and revenue cycle management.Versatile team players ready to tackle any task, no matter how small.Self-directed individuals who thrive with minimal guidance and take pride in their ability to overcome challenges.

We are seeking a talented and driven Full Stack Engineer to join our dynamic team at mlabs in New York. In this role, you will be responsible for developing and maintaining our web applications, ensuring a seamless user experience while collaborating with cross-functional teams to deliver high-quality software solutions.

About AmigoAt Amigo, we collaborate with healthcare organizations to establish a powerful AI infrastructure that enhances the experience of both patients and providers. Our innovative solutions streamline clinical workflows and enhance patient engagement throughout their journey—covering everything from pre-visit intake to care navigation, post-visit care plans, and ongoing patient monitoring.Recently, we secured funding through our Series A round, with support from esteemed investors such as Madrona, General Catalyst, and Optum Ventures. Our work is validated by partnerships with leading academic medical institutions, and we have successfully facilitated over 3 million patient interactions, with plans to increase this number significantly in the coming year.About the RoleAs a Senior Full-Stack Engineer at Amigo, you will be instrumental in developing the core applications that drive our clinical operations. You will work on three key products: the Control Center, which provides real-time monitoring of agent conversations; the Research Platform, enabling natural language queries over healthcare data; and Agent Forge, a no-code tool for designing agent behaviors.Your responsibilities will span the full development lifecycle—from designing database schemas and APIs to crafting user interfaces—while handling sensitive patient data at scale. These applications are vital for clinical teams, researchers, and clients who interact with our platform on a daily basis. We maintain high standards for accuracy and reliability in all our outputs.Key ResponsibilitiesDevelop and deploy features across Control Center, Research Platform, and Agent Forge.Design and implement real-time interfaces for clinical oversight, including streaming conversations, escalation workflows, and audit trails.Create natural language query interfaces for healthcare data, ensuring clarity and feasibility indicators.Build no-code solutions enabling non-engineers to configure agent behaviors.Develop responsive, accessible UIs compatible with both desktop and mobile platforms for clinical users.Design APIs and data models that support real-time streaming, voice, and multi-channel communication.Establish authentication, authorization, and audit logging mechanisms to ensure healthcare compliance.Optimize application performance for high-volume clinical data handling.Collaborate with agent engineers, clinicians, and customers to gather and understand workflow requirements.Contribute to shared component libraries and the design system.Qualifications4+ years of experience in full-stack development with a strong emphasis on building scalable applications.Proficiency in front-end technologies (e.g., JavaScript, React) and back-end technologies (e.g., Node.js, databases).Experience with real-time data processing and API design.Strong understanding of UI/UX principles and commitment to creating accessible applications.Ability to work collaboratively in a team-oriented environment and communicate effectively with non-technical stakeholders.

Full Stack Software EngineerValthos Inc.At Valthos, we harness the power of applied biological intelligence to develop innovative software and biological AI systems aimed at protecting humanity. Our advanced AI architectures, which drive self-driving cars and enable precision landings of rockets, are now being integrated into biological design. To maintain our leading edge, we strive to enhance our toolkit to effectively navigate the complexities of nature's ongoing mutational landscape.Our team consists of dedicated software engineers from renowned organizations like Palantir, as well as biological machine learning engineers from MIT's Broad Institute and DeepMind. Together, we aim to translate cutting-edge computational biology advancements into practical applications for both federal and commercial sectors.We are on the lookout for talented full stack software engineers who will contribute to the design and implementation of platforms that enable Valthos to deliver pioneering methods to our scientific and technical users. Your daily tasks will involve building sophisticated distributed systems, managing scalable container-based infrastructures, developing REST APIs, integrating open-source solutions, and adapting our software to meet user needs. You will work in close collaboration with both technical and non-technical teams to identify challenges faced by our developers and clients, and to create software and infrastructure solutions that address these issues.

Join Edra: Transforming Enterprise AIEdra is tackling one of the most complex challenges in enterprise AI: bridging the gap between generic AI models and specific company processes. We develop AI agents that understand how processes function in real-time and execute operations effectively.As a Series A startup, supported by Sequoia and other prominent venture capital firms, we are expanding our presence in New York and London. Our team comprises highly skilled engineers, AI researchers, and strategists who share a commitment to excellence and believe that extraordinary talent is the cornerstone of our success.Your RoleWe are in search of Full Stack Engineers who are passionate about software craftsmanship, including strong type systems, thoughtful API design, and robust data modeling. You will not be solely focused on AI models but will build the surrounding architecture, workflows, user interfaces, integrations, and observability tools that make our AI applications practical and effective in real-world scenarios. As an early team member at Edra, you will play a pivotal role in shaping not just our products but also our engineering culture, tooling decisions, and the technical foundation of our company.Our approach is intentional and thorough. There is no disconnection between development and deployment; you will take projects from initial concept to production, taking full ownership of the results. We prioritize thoughtful construction over hasty releases, valuing both speed and quality as complementary rather than opposing forces.Key ResponsibilitiesDesign and implement platform systems using Python (FastAPI), covering everything from API contracts to database schemas and infrastructure, alongside creating high-quality user experiences using TypeScript and React, focusing on clean component design, strong typing, and maintainable frontends.Develop shared TypeScript and Python libraries, component systems, and internal tools to enhance the productivity of the engineering team, while defining and enforcing patterns, shared types, and contracts across the frontend and API.Take full ownership of your projects: gather requirements, manage dependencies, and drive tasks to completion autonomously. One day you might define a schema, the next day build a React component, and before the day ends, troubleshoot a deployment issue.Contribute to product direction and design. Collaborate closely with design teams, make informed decisions regarding interfaces, and actively participate in weekly product meetings to ensure alignment with customer needs and the practical use of your builds by deployed engineers.Develop and maintain integrations, connectors, and more to enhance the overall capabilities of our platform.

Why Join Us?At Brex, we are revolutionizing the way companies manage their spending with our AI-driven spend platform. Our integrated corporate cards, banking solutions, and global payment systems empower businesses of all sizes—from dynamic startups to established enterprises—to gain control over their expenditures, minimize costs, and enhance operational efficiency. Notable companies like DoorDash, Flexport, and Compass trust Brex to optimize their financial processes.Joining Brex means pushing your boundaries, challenging conventional norms, and collaborating with some of the brightest talents in the tech industry. We are dedicated to fostering a diverse team and an inclusive culture where your aspirations can soar. We equip you with the necessary tools, resources, and support to elevate your career to new heights.Engineering at BrexOur engineering teams are focused on creating scalable systems with purpose and precision. We encompass diverse fields such as Software, Data, Security, and IT, working autonomously yet collaborating deeply. We confront tough technical challenges, take ownership of our results, and strive for excellence from design to deployment. Here, engineering is an art form, and builders evolve into leaders.Your RoleAs a Senior Full Stack Software Engineer on our Task Workflows Platform team, you'll be instrumental in developing and scaling the backbone infrastructure that fuels Brex's core experiences. You'll engage with our broad array of platforms, including our multi-channel notifications engine, collaborative commenting system, and dynamic workflow rule builder. Your expertise will be crucial in transforming our task orchestration capabilities from a one-size-fits-all experience to highly customized solutions tailored for specific product domains.Your role involves tackling intricate full-stack challenges, from architecting scalable backend APIs and developing rule-evaluation engines for personalized automations to designing user-friendly frontend experiences for our task interfaces and workflow builders. Beyond platform development, you'll influence the overall product experience, utilizing AI to refine user workflows and contributing to the ongoing advancement of our productivity tools across web and mobile interfaces.Work EnvironmentThis position is based in our New York office, where we embrace a hybrid work model that blends the energy of in-office interactions with the flexibility of remote work. Currently, we require a minimum of three coordinated office days each week, typically Monday through Wednesday.