Senior Full Stack Engineer at Adonis | New York City

About the Role tetrix is hiring a Staff Full Stack Engineer in New York City. This position focuses on building and improving web applications using Python and JavaScript. The work centers on delivering reliable software and refining the platform’s user experience. What You Will Do Develop and maintain web applications with Python and JavaScript Work with te…

OverviewTetrix is an innovative startup dedicated to empowering institutional investors to confidently navigate alternative markets, akin to Bloomberg but specifically for private markets. Our cutting-edge, AI-driven platform streamlines complex, unstructured private market data into actionable insights, featuring automated document retrieval, AI-enhanced data extraction, and real-time portfolio analytics—all integrated into a single, user-friendly solution. As we rapidly expand into a category-defining product, we collaborate with prominent capital allocators globally. Join our passionate team on this unique journey to reshape the future of financial market infrastructure, backed by distinguished investors including Innovation Endeavors, Eric Schmidt’s VC firm, and influential angels from BlackRock, CPPIB, SoftBank, Lending Club, and Plaid. Who We AreOur team may be small, but we are driven and experienced, boasting solid expertise in financial markets and modern technology. We have cultivated a culture of trust, ownership, and curiosity, where each member is encouraged to contribute, challenge ideas, and grow collectively. Led by co-founders Olivier (CEO) and Naunidh (CTO), who forged their partnership during their MBA studies at Stanford, Tetrix was founded in the summer of 2023. Who You AreYou are proactive and hands-on, taking the initiative to drive projects forward.You learn and adapt swiftly, tackling challenges with creativity and resourcefulness.You prioritize the customer experience, ensuring that your decisions enhance user satisfaction.You excel in a collaborative environment, valuing open communication and teamwork.You bring 5+ years of experience in Python and JavaScript, ideally within dynamic or entrepreneurial settings. Open-source contributions are a plus. What You’ll DoDesign, develop, and maintain robust web applications using Python and JavaScript.Collaborate with cross-functional teams to define, design, and ship new features.Ensure the performance, quality, and responsiveness of applications.Identify and fix bugs and performance bottlenecks.Contribute to all phases of the development lifecycle.

Join us at phia as a Full Stack Engineer Intern, where you'll have the unique opportunity to work on innovative projects and gain hands-on experience in both front-end and back-end development. You will collaborate with a talented team of engineers to create scalable and efficient web applications that drive our mission forward.

Job Description:Join the innovative team at glimpse as a Full-Stack Software Engineer. We are looking for a dedicated developer with over 3 years of experience who thrives in a fast-paced environment and is eager to take ownership of projects from inception to completion.Responsibilities:Design, develop, and maintain comprehensive front-end and back-end applications.Work collaboratively with diverse teams to create and implement new functionalities.Drive projects from initial stages through to production deployment.Engage in code reviews and share best practices to enhance team performance.Identify and resolve intricate technical challenges.Ensure the technical viability of UI/UX designs.What We’re Looking For:At least 3 years of experience in full-stack software development.Outstanding coding abilities and a passion for rapid code deployment.Proficient in Python, Node.js, and Next.js.Experience in building applications with Large Language Models (LLMs).Demonstrated problem-solving skills and adaptability in a high-speed environment.Strong communication skills and a collaborative mindset.Willingness to work full-time from our New York office.Technologies We Use:Python, Node.js, Next.jsMongoDB, PostgreSQLWhy Join Us?Be part of an early-stage, fast-growing startup with a high degree of ownership.Collaborate directly with our founders who have a proven track record in building successful businesses.Engage with a dynamic, in-person team in NYC.Contribute to solutions that significantly impact the retail industry.

Why Choose Rogo?At Rogo, we are at the forefront of redefining the financial landscape with our groundbreaking AI analyst. Our vision is to empower finance professionals across the globe—from elite investment banks to private equity firms—by providing AI solutions that offer unprecedented speed, accuracy, and insights. We are not merely enhancing financial workflows; we are reinventing them entirely.Joining Rogo is a unique opportunity to be part of a transformative company during a pivotal moment. With a rapidly expanding clientele, a validated product-market fit, and support from distinguished investors, we are poised for swift growth and are setting new benchmarks in the enterprise AI sector.Our team is composed of highly skilled, driven individuals who are passionately committed to our mission. We work with high intensity, own complex challenges, and maintain an unwavering focus on our users. If you excel in a dynamic environment, strive for excellence, and are eager to help shape the future of finance, we welcome you to be part of our journey.

About UsSapien is revolutionizing the operational dynamics of finance teams in the AI era. Our vision is to create an autonomous CFO—a comprehensive system managing company financials seamlessly. Our platform provides real-time analytics of intricate financial data, enhancing decision-making speed, mitigating costly errors, and delivering substantial value. We have successfully identified multi-million-dollar discrepancies, preserved thousands of jobs, and significantly boosted our clients' profitability.Partnering with diverse industries—manufacturing, healthcare, dining, and large corporations—we strive to thoroughly grasp and automate their financial workflows. Based in Madison Square Park, NYC, we have garnered support from General Catalyst, Neo, and leading professionals from Google, OpenAI, Microsoft, Ramp, and Stripe, raising over $9M.Position OverviewAs a Full-Stack Engineer, you will develop features from inception to deployment for Sapien's core platform. This encompasses transforming designs into frontend implementations, crafting backend APIs, modifying databases, and integrating agents. You will take ownership of the entire user experience, ensuring functionality and performance.In this role, you will strike a balance between launching innovative features and maintaining platform stability and performance. Engaging directly with clients, you will observe how they utilize your developments and refine them based on genuine feedback.Key ResponsibilitiesDevelop features that position Sapien as an essential tool for finance teams, crafting experiences that engage users daily by proactively delivering insights and addressing potential issues before they escalate.Create intuitive interfaces that simplify complex operations for finance professionals lacking technical expertise.Establish human-in-the-loop systems allowing users to provide feedback, rectify mistakes, and educate the system on specific business processes, enhancing agent intelligence over time.Make pivotal product and technical choices: determine feature functionalities, UI design, database architecture, and appropriate technologies. You will not merely implement specifications; you will conceptualize what to build.QualificationsProficient in modern web technologies such as React, TypeScript, Python, SQL, and common backend frameworks. While you don’t need to be an expert in all areas, you should be capable of navigating the entire stack.A product-oriented mindset, prioritizing user experience in your development approach.

About ForaFora is a pioneering travel agency that empowers individuals passionate about travel to establish successful advisory businesses. We are revolutionizing the $100 billion travel agency sector by merging advanced technology, data analytics, and a supportive community, enabling thousands of entrepreneurs to thrive on our platform. Our comprehensive business-in-a-box solution provides travel entrepreneurs with everything needed to launch and grow, from innovative tools and tailored training to a vibrant community and exclusive industry partnerships. At the core of our mission is our commitment to assist the next generation of travel entrepreneurs in transforming their passion for travel into rewarding careers, whether on a full-time or part-time basis. We firmly believe that anyone—from seasoned professionals to aspiring advisors—can create a business that is both profitable and personal.Established in 2021 by experienced entrepreneurs, Fora has experienced steady growth, now boasting a team of over 200 full-time employees located in downtown New York City. In 2025, we successfully closed $60 million in 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 include recognition as a LinkedIn Top Startup for 2024, Fast Company’s Most Innovative Companies for 2025 and 2023, and Built In's Best Places to Work for 2025.We are on a mission to create the first truly unified platform addressing all travel needs, combining human expertise with cutting-edge technology to redefine how individuals plan and book their travel.About The RoleWe are seeking an experienced Senior/Staff Full Stack Engineer to join our Finance Pod, which develops and maintains the intricate systems that facilitate advisor payments at Fora. This team is responsible for the complete advisor payment system and experience, encompassing booking data ingestion, commission collection, and payouts, and is rapidly expanding into innovative fintech and payment solutions.In this role, you will work across the technology stack to design, develop, and enhance both advisor-facing features and internal tools that ensure data accuracy, reconciliation, and seamless integrations with payment partners. You will collaborate closely with Product, Design, and Operations teams to instill trust, visibility, and efficiency in every interaction related to advisor earnings. Project examples include creating intelligent visualizations for the Payments page and refining our travel payment systems.

Join Verse Medical as a Full Stack Staff Software Engineer where you will play a pivotal role in developing innovative software solutions that enhance patient care. You will work on both the front-end and back-end technologies, collaborating with cross-functional teams to deliver cutting-edge applications that meet the needs of our clients. This is an exciting opportunity to contribute your expertise and help shape the future of healthcare technology.

About HyphaHypha is an innovative AI-driven platform that is redefining asset management across its entire lifecycle—covering acquisition, management, and exit strategies. Our primary focus is on healthcare facilities and multifamily real estate, and we are making significant strides in transforming the industry through three core pillars:Observability: Delivering real-time insights into asset performance, deal progression, and market conditions for all stakeholders involved.Intelligence: Empowering AI-driven, multidimensional optimization that includes risk assessments, tax strategies, and benchmarking capabilities.Orchestration: Developing streamlined workflows and a unified source of truth to eradicate inefficiencies.Role OverviewIn the position of Senior/Staff Full Stack Product Engineer at Hypha, you will be responsible for the development and ownership of features that users interact with on a daily basis. This encompasses systems such as data visualization, entity management, search functionalities, dashboards, and document workflows. You will collaborate closely with product and design teams to translate complex challenges into intuitive product experiences.This role occupies a pivotal space at the intersection of frontend, backend, and product strategy. You will lead the design and implementation of features from start to finish while contributing to the evolution of the product. The emphasis is not merely on coding but on deeply understanding user challenges, making informed product and technical decisions, and crafting thoughtful, well-designed solutions.We are looking for senior and staff-level engineers who can operate with a high degree of autonomy, manage complex product systems, and help establish engineering standards as Hypha grows. Compensation will be commensurate with experience, technical expertise, and scope of responsibility.Core CompetenciesDesign and deliver full-stack product systems utilizing React, Next.js, APIs, and PostgreSQL-based services.Take ownership of features from ideation through to production, including technical design, implementation, edge case handling, and overall product refinement.Construct scalable, maintainable systems across both frontend and backend that facilitate complex workflows and data-rich interactions.Collaborate closely with product and design teams to define project scope, challenge existing assumptions, and iteratively deliver with sound judgment.Make informed decisions regarding application architecture, state management, data modeling, and backend development.Enhance engineering quality through rigorous code review, improved abstractions, and stronger production practices.

Join Antimetal as a Full-Stack Product Engineer, where you'll be at the forefront of crafting our core product driven by innovative AI technology. Your role will involve designing robust APIs, orchestrating system layers, and implementing essential business logic while creating seamless and user-friendly interfaces.We seek a proactive individual who thrives in tackling ambiguous challenges, managing projects from inception to completion, and effectively translating user feedback into actionable product enhancements.About AntimetalAntimetal is revolutionizing infrastructure management. Our mission is to create a platform that not only identifies and resolves issues but also anticipates them, allowing engineers to reclaim their time for what they excel at: developing exceptional products.Your Responsibilities:Develop AI-driven tools and productsDesign and implement new features across the technology stack, from backend data models to React-based frontendsEngage with users to gather insights and shape product developmentCollaborate with design teams to enhance frontend experiences and establish interaction standardsLead projects through uncertainty, breaking them into manageable milestones and ensuring timely deliveryWork closely with customers to refine features and validate the product trajectoryYour Qualifications:5+ years of experience in professional software engineering within full-stack rolesProven track record of owning projects from start to finish in a startup environmentStrong proficiency in Typescript, React, Postgres, and NestJSDemonstrated ability in product design, crafting features that resonate with usersCapability to lead initiatives through ambiguity and drive alignment across cross-functional teamsPreferred Qualifications:Experience with AI-native product developmentBackground in development tools, infrastructure, or observabilityFamiliarity with cloud infrastructure (AWS, Docker, Kubernetes, Terraform)Experience in direct customer engagement to shape product offeringsPrevious exposure to shaping product direction based on user interactions

About the RoleAt april, we are in search of a highly skilled, innovative, and motivated Staff Full-Stack Engineer to join our team. You will be instrumental in defining the future of our platform while driving our mission to make tax processes seamless for everyone. Your role will involve architecting and developing scalable systems and tools that empower our teams to create outstanding user experiences swiftly and confidently. If you possess a passion for technical leadership, thrive on tackling complex architectural challenges, and aspire to make a significant difference for millions of users, we would be thrilled to have you on board. Candidates located in the New York City metropolitan area are expected to be on-site at least three days per week.ResponsibilitiesLead critical, cross-functional engineering initiatives from design through to deployment, ensuring both quality and scalability.Engage in technical decision-making and foster knowledge sharing across various teams.Work collaboratively with Product, UX, and other stakeholders to deliver integrated and data-driven solutions.Assess and implement new tools, technologies, and methodologies that elevate engineering standards.Lead by example, promoting service ownership, observability, and operational best practices throughout the engineering team.Foster a culture of excellence, emphasizing clean code, thorough testing, and continuous improvement.RequirementsMinimum of 8 years in software engineering, with at least 2 years in a senior, staff, or principal capacity.Demonstrated experience in designing and building distributed systems at scale in cloud-native environments (GCP or AWS).Expertise in backend technologies, including microservices, event-driven architectures, and REST/gRPC APIs.Proficiency with modern front-end frameworks (React, Vue, Angular) and full-stack engineering practices.Fluency in system design and architecture, adept at balancing scalability, performance, and developer experience.Proven track record in shaping technical direction and enhancing team capabilities.A strong passion for developing impactful, customer-centric products that are both data-rich and user-friendly.Excellent communication and collaboration skills; capable of working effectively across functions.

Join a pioneering AI engineering team in New York City, dedicated to creating and scaling innovative AI-driven products that will revolutionize user experiences for millions. Our workspace is akin to a state-of-the-art AI laboratory, merging groundbreaking innovation with the extensive reach of our diverse ecosystem. The team comprises exceptionally skilled AI engineers, full-stack developers, product managers, and designers all committed to expanding the possibilities of AI technology.General InformationWe are on the lookout for extraordinary engineers who have successfully deployed AI features that are actively utilized in production environments. The ideal candidate should possess full-stack capabilities, flourish in dynamic and collaborative settings, and have a fervent passion for crafting seamless user experiences powered by AI.Key ResponsibilitiesDesign, develop, and launch user-centric AI features across various products, including content creation tools, e-commerce recommendations, and messaging platforms.Quickly prototype and refine AI-driven solutions, transforming them into robust production-ready systems.Work in close collaboration with product managers, designers, and fellow engineers to conceptualize, implement, and scale innovative features.Remain informed about advancements in AI technology and utilize them to enhance user experiences.Contribute to the technical vision and strategy for the progression of AI products within the ecosystem.RequirementsA proven history of successfully deploying AI features into production with verifiable user engagement.Hands-on experience with large language models (LLMs), either through APIs or custom implementations, at scale.Proficient full-stack development skills in PHP, Python, or JavaScript.Capability to create high-performance AI-enhanced user interfaces.Preferred QualificationsExperience in developing consumer AI products that have grown to serve large user bases.Strong proficiency in PHP.Familiarity with WordPress, e-commerce platforms, or messaging frameworks.Contributions to open-source projects demonstrating technical acumen and innovative thinking.BenefitsBecome part of a meticulously selected team comprising some of the brightest minds in AI and product development.Open to both on-site and remote candidates.Develop products that will have a direct impact on millions of users across a varied ecosystem.Opportunity to be part of an elite AI laboratory with the capability and reach of a global platform.Long-term, full-time role.

About Sailor HealthSailor Health is dedicated to addressing the urgent mental health crisis affecting older adults. In the U.S., seniors are the demographic with the highest suicide rates but often lack adequate mental health services. With projections indicating that by 2030, over 65 million seniors will represent nearly a quarter of the U.S. population, this issue demands immediate attention.We are developing an innovative platform focused on senior mental health, facilitating connections between older adults, therapists, healthcare professionals, and insurance providers. Our AI-driven operating system enhances care coordination, provides real-time clinical insights, and simplifies insurance billing, allowing therapists to dedicate more time to compassionate care.Our rapid growth and partnership with Medicare enable us to deliver exceptional and affordable psychotherapy to hundreds of patients. We are proud to have the support of distinguished founders from Ramp, Nourish, Headway, Charlie Health, and Spring Health.⭐ About the RoleLocation: HQ - New York City - Remote.We are seeking a Founding Full-Stack Engineer who will spearhead the development of our AI-enhanced platform from its architectural design through to launch. You will collaborate closely with our co-founders to establish the systems and AI infrastructure that drive our platform, including tools for therapists and care navigation support.This is a unique opportunity to create and launch an AI-first product from the ground up at a startup that has achieved exceptional product-market fit. You will be responsible for significant technical decisions, influence our engineering culture, and rapidly bring innovative ideas to fruition. If you thrive in a fast-paced environment and seek to make a meaningful impact through your coding, we want to connect with you.

About the RoleJoin april as a Senior Full-Stack Engineer, where your innovative mindset and data passion will contribute to revolutionizing tax solutions for millions. We're seeking a talented individual ready to lead projects, enhance customer experiences, and drive professional growth. Based in the New York City metropolitan area? You'll need to collaborate on-site at least three days a week.Key ResponsibilitiesTake ownership of end-to-end projects that impact millions of users, from concept to deployment.Collaborate with product management and UX teams to define product specifications and ensure seamless execution.Architect robust system designs and evaluate tool selections to optimize performance.Develop cloud-native microservices that enhance our platform's functionality.Mentor team members and elevate our technology stack and practices.

Join Our Team at TennrAt Tennr, we revolutionize the referral process in healthcare. When a patient is referred to a specialist, the journey can often be fraught with delays and confusion. We bridge this gap by ensuring every referral reaches the right specialist with the necessary information promptly, empowering healthcare providers to enhance their efficiency and service delivery.Your RoleWe are seeking a dynamic Full Stack Product Engineer who thrives on transforming innovative ideas into practical solutions that address real customer challenges. You will be responsible for designing and implementing features that span frontend and backend systems, thereby delivering substantial value to our clients. This includes creating database schemas, developing backend APIs, and designing user-friendly interfaces that healthcare professionals adore.In collaboration with product and design teams, you will gain insights into user interactions with our platform and translate these into strategic product enhancements. Additionally, you'll partner with sales and customer success teams to integrate valuable customer feedback into our product offerings. You will engage with cutting-edge artificial intelligence techniques, positioning yourself at the forefront of technological advancements in the healthcare space.Ideal candidates will possess a founder’s mindset, excel in fast-paced, ambiguous environments, and take ownership of the entire lifecycle of features—from ideation through implementation to continuous improvement. You will spearhead performance optimization initiatives, ensuring code quality, scalability, and adherence to best practices as we expand.This position is ideal for a versatile engineer eager to work across the software stack and passionate about creating impactful user experiences that shape the future of healthcare.

About N1:N1 is a groundbreaking, hyper-efficient, and horizontally scalable blockchain network, crafted to facilitate trustless computing on an internet scale. Our diverse team boasts expertise from prestigious institutions such as Harvard, CMU, DFINITY, VMware, and Galaxy Digital, and is supported by leading investors including Founders Fund, Kraken Ventures, SALT, and Amber Group.Position Overview:We are on the lookout for a dedicated Full Stack Software Engineer to become a vital part of our engineering team. This full-time role encompasses the development of front-end, back-end, and database applications, particularly focused on innovative blockchain products. The ideal candidate will be highly organized, service-oriented, resourceful, and possess a strong product mindset. You will take ownership of enhancing our web platforms and internal tools, ensuring they are user-friendly, secure, and optimized for high performance.

Role overview Rowspace seeks a Full Stack Product Engineer in New York City to help shape and build its platform. This position spans the full product lifecycle, from early development through launch. Projects include building data pipelines that transform long investment memos into searchable formats, designing interfaces for analysts to trace AI-generated answers back to original sources, and deploying custom agent workflows based on real customer feedback. What you will do Design and implement user interfaces that fit smoothly into investors' daily routines. Develop APIs to integrate Rowspace with chat platforms, custom workflows, and external tools such as ChatGPT, Claude, and Excel. Build ingestion pipelines that organize unstructured data like PDFs, emails, and spreadsheets into a unified knowledge system. Work directly with customers to understand needs and deliver solutions quickly. Maintain high standards for security, privacy, and reliability when handling sensitive investment data. Create evaluation sets to test and validate the reliability of LLM systems. Requirements Experience delivering full-stack products using tools such as React/Typescript and Python or Node (or similar stacks). Enjoy designing scalable data models and APIs, and take pride in refining schemas. Motivated to bring AI into production, focused on building reliable products that deliver value to customers. Background in finance or fintech is helpful, but curiosity about investor workflows is essential. Committed to engineering quality, improving workflows, sharing knowledge, and maintaining high standards. Interested in joining early, as one of the first 20 engineers at a Series-A startup, with real ownership and impact. Benefits Comprehensive medical, dental, and vision insurance. 401(k) plan with employer matching while employed at Rowspace. Unlimited Paid Time Off (PTO) policy.

About Standard BotsAt Standard Bots, we aim to democratize real-world automation, merging the digital and physical realms to enhance productivity across diverse industries. Our innovative applications and APIs empower individuals and developers alike to tackle challenges without needing extensive backgrounds in robotics or automation. With a strong emphasis on user-friendliness, we bring transformative potential to new users and sectors.Your Role:We are seeking experienced technical leaders to help shape the future of robotics using modern software engineering methodologies. As a Senior Full-Stack Software Engineer, you will collaborate with fellow engineers, leadership, and users to enhance products that significantly impact our users and unlock new opportunities for them. Location and BenefitsThis position is hybrid, requiring 3 days a week onsite at our NYC office, conveniently situated near Grand Central Station. Our office is equipped with robots for demonstrations and testing!Key Responsibilities:Identify, scope, and lead impactful technical and user-facing projects.Provide strategic technical guidance to leadership.Mentor and support fellow engineers in their technical and personal development.Drive technical decision-making through hands-on, in-depth work.Technology Stack:Front-end: React, TypeScriptBack-end: Node.js, Python, C++Containerization: KubernetesVirtualization: DockerCI/CD: GitHub ActionsWho You Are:No prior experience in robotics is required or preferred.We seek engineers who are motivated, optimistic, innovative, and resourceful. While a robotics background is not needed, we find candidates thrive when they are enthusiastic about this domain and eager to apply their skills in a new context.Our ideal candidate will engage in approximately 70% back-end and 30% front-end work, with flexibility to adjust focus as needed.

About UsAt NewForm, we are revolutionizing the marketing landscape by creating innovative tools tailored for the modern advertising era. As the industry shifts towards a content-first approach, traditional audience-focused marketing analytics are becoming less effective. We pride ourselves on being a tech-enabled service, combining our proprietary technology with expert services to deliver measurable outcomes for our clients.Our Advanced ProductsOur AI-driven toolkit features:Framework: A unique statistical engine optimizing creative testing by 30%, enhancing budget efficiency and speeding up the identification of successful content.WillBot: An AI-integrated Slack chatbot designed to keep teams updated on their marketing metrics in real-time.More: Custom solutions for reporting, dashboards, and media buying automation.Our ImpactWe collaborate with forward-thinking brands across various sectors, such as Acorns, Bluechew, Found, Coffee Meets Bagel, RentApp, and Western Union.Our Competitive EdgeWhat differentiates us is our rare blend of extensive marketing knowledge and state-of-the-art AI technology. We apply years of practical marketing experience to create solutions that achieve tangible results, leveraging a robust network of existing client relationships to expedite and enhance our offerings.Your RoleOwnership of Projects: You will manage projects from inception to deployment. We're seeking a candidate who has experience establishing production systems and is not hesitant to construct and launch products from ground zero.You will work independently, closely collaborating with leadership to outline the product roadmap and implement new features. There are no product managers here; you will engage directly with our internal team and clients, developing solutions that truly impact results.Full-Stack Expertise: You should possess strong experience with LLM, Node/Typescript, and React (Next.js), and be open to learning new technologies. Our current stack includes a Typescript backend, Next.js frontend, and LLM API for chat and classifiers. As our product evolves, you will be equipped to address challenges as they arise.