Full Stack Engineer at mlabs | New York

Join Coast as we revolutionize the $1 trillion U.S. B2B card payments infrastructure, primarily focusing on the nation’s 500,000 commercial fleets and 40 million commercial vehicles. Our mission is to modernize the outdated technologies that serve these customers, providing drivers, fleets, and merchants with innovative digital experiences and transparent financial services. Backed by leading fintech and mobility venture funds, Coast is on a mission to enhance working lives in one of the largest sectors in the country.At Coast, we are building a world-class engineering team driven by software innovation. We are seeking passionate front-end, full-stack, backend, and platform engineers. This is an exceptional opportunity to join us at the ground level, where you can significantly influence our growth, contribute to key decisions, and learn through hands-on experience in a vibrant early-stage startup environment. If you are practical, creative, and eager to thrive in a dynamic setting, we want to hear from you!To optimize our product engineering velocity, we are hiring exclusively in NYC and the tri-state area. Our office is situated in the bustling SoHo neighborhood of Manhattan, fostering a creative and energetic atmosphere.The Senior Full-Stack Engineer role is critical to Coast's growth. You will collaborate closely with Product and User Experience teams to design, deliver, and manage features utilized by thousands of our clients around the clock. This role demands strong cross-functional teamwork, a focus on rapid iteration, and a commitment to quality and pragmatism.

Join Coast as a Security Engineer, where you'll play a critical role in safeguarding our digital infrastructure and data integrity. You will collaborate with our engineering teams to design and implement security measures, assess risks, and respond to security incidents. Your expertise will help us ensure that our systems are robust and secure against emerging threats.

At Coast, we are revolutionizing the U.S. B2B card payments infrastructure, targeting the vast landscape of 500,000 commercial fleets and over 40 million commercial vehicles. Our mission is to modernize the outdated technologies that serve these customers to meet the growing demand for innovative digital experiences and affordable financial services. With the backing of leading fintech and mobility venture funds, we are poised to transform one of the largest sectors in the country. This is an exciting opportunity to join a dynamic and rapidly growing engineering team at Coast. As a DevSecOps Engineer, you will play a pivotal role in shaping our security practices and ensuring the integrity of our platforms. You will have the chance to contribute significantly to foundational decisions and expand your impact as we scale. In this role, you will collaborate with a passionate product team, addressing key security concerns from network security to code scanning and application security reviews. Your expertise will help us create streamlined processes that reduce friction while maintaining high standards of security. This position reports to the Head of Platform and works closely with Product Engineering and the CTO. Our New York City office is located in the vibrant SoHo neighborhood, offering a creative work environment. Team members are typically in the office four days a week.

Join Coast as a Platform Engineer specializing in Security, where you will play a pivotal role in enhancing our security infrastructure. You will collaborate with cross-functional teams to design, implement, and maintain robust security protocols that protect our platforms and data. This position offers the opportunity to work in a dynamic environment, contributing to innovative solutions that drive our business forward.

Coast is revolutionizing the U.S. B2B card payments and expense management landscape, specifically targeting the nation's 500,000 commercial fleets and 40 million commercial vehicles. Our innovative platform empowers vehicle fleets with enhanced control, security, and real-time visibility into their expenditures. We initiated our journey by creating a fair and transparent charge card tailored for mobile fleet workers, owners, and managers. Our long-term ambition is to develop a comprehensive and intelligent financial services platform uniquely designed for this sector. Design remains at the forefront of our mission to simplify complex financial workflows, making them intuitive and trustworthy for users in both field and office environments.Founded and guided by Daniel Simon, a co-founder of Bread (breadpayments.com), a prominent payments and credit technology firm that was acquired for over $500 million in 2020, Coast has successfully raised a total of $165 million in funding. Our latest funding event, a $40 million Series B equity round led by ICONIQ Growth, included participation from Thomvest and Synchrony, alongside renowned fintech and mobility venture funds such as Accel, Insight Partners, and Better Tomorrow Ventures, among others.

Coast is revolutionizing the U.S. B2B card payment ecosystem, specifically targeting the vast landscape of 500,000 commercial fleets and 40 million commercial vehicles, alongside countless commercial drivers. The outdated technologies currently serving these customers are no longer sufficient, as fleet businesses increasingly seek modern digital experiences and transparent financial service solutions. Our mission at Coast is to deliver innovative solutions at an unprecedented scale, beginning with the Coast Fuel Card and an advanced spend management platform. What does Product Marketing entail at Coast? Our dynamic marketing team of 12 operates through a lens of strategic experimentation: we rapidly test, learn swiftly, and amplify successful strategies across various channels. We prioritize impactful positioning, clear messaging, and aspire to build a generational brand that resonates deeply with finance and operations leaders. Product Marketing at Coast serves as the bridge connecting our customers, our products, and our growth strategies. We work closely with Product, Sales, Customer Success, and the broader Marketing team to effectively position and launch products, while driving adoption, expansion, and customer retention throughout the entire lifecycle. About the Position We are in search of a Senior Product Marketing Manager to spearhead marketing efforts for all new offerings at Coast. This role begins with our spend management solution, designed specifically for fleet businesses. Your mission will be to elevate this product from a key driver of Coast's growth to a dominant player in our business portfolio. Following this product launch, numerous additional offerings will be introduced this year, demanding your strategic leadership. This role is ideal for a full-stack Product Marketing Manager eager to build from the foundation up. You will become the subject matter expert in understanding our customers, the market landscape, and the intricacies of our product. You will define our messaging around spend management, develop packaging and sales strategies, and foster adoption and expansion throughout our customer base. You will have significant ownership in an environment where you will continuously develop the playbook as we progress. Key Responsibilities Craft positioning and messaging that clearly articulates Coast's competitive advantages, and disseminate this across all communication channels, including our website, product communications, sales materials, integrated marketing campaigns, and customer lifecycle communications. Lead cross-functional product launches from inception to execution, collaborating closely with Product and Sales to shape the roadmap, develop the narrative, and ensure internal alignment for our overarching go-to-market strategy. Design cross-sell and lifecycle journeys for your products (onboarding, activation, engagement, expansion), leveraging customer insights, product metrics, and performance data to enhance adoption and drive growth.

SENIOR FULL-STACK ENGINEER Join Current, a pioneering consumer fintech platform, dedicated to revolutionizing financial access for millions of everyday Americans. With over 5 million members, we offer innovative financial solutions that integrate seamlessly to meet the diverse needs of our users, empowering them to build brighter financial futures. Located in the heart of NYC, we thrive on results and are committed to enhancing our products, accelerating our growth, and enabling our team members to make a meaningful impact on our mission. We are seeking a Senior Full-Stack Engineer to enhance our dynamic Full-Stack Team in New York. In this role, you will collaborate with product and design teams to create engaging web experiences for Current’s vast user base, as well as internal stakeholders. You will play a key role in the entire feature development lifecycle, from initial concept through to deployment and iterative improvements. The Full-Stack Team at Current is focused on delivering robust, responsive web applications. We handle a variety of projects aimed at driving user growth, as well as developing internal tools to support our existing members. This position offers a competitive base salary range of $150,000 to $240,000, determined by experience, skill set, and qualifications assessed during interviews. Current also provides a comprehensive total rewards package, including base salary, equity, and extensive benefits.

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!

Join Odyssey:At Odyssey, we are dedicated to revolutionizing access to exceptional education nationwide, irrespective of income or location. Our innovative technology simplifies educational choices for parents in the regions we serve. By collaborating with state agencies and educational vendors, we streamline the process that empowers parents to secure the essential tools for their children's success.As the pioneering company focused on education savings accounts (ESAs), our platform currently facilitates programs that assist over 200,000 students in accessing more than $2 billion in state funding.Role Overview:As a Full Stack Engineer at Odyssey, you will play a pivotal role in developing the foundational technology that drives our platform. Your work will span the entire technology stack, including program eligibility systems, educational fund ledgers, and a marketplace that allows schools and vendors to process tuition and service payments.This position emphasizes the creation of full-stack systems, which encompasses scalable services, APIs, data models, frontend user interfaces, and internal tools designed to support families, educational institutions, providers, and operational teams as our platform expands.By joining our dynamic team, you will utilize your expertise to make a tangible difference in the quality and accessibility of K-12 education throughout the United States.Your Responsibilities:Design, architect, and develop engaging functional experiences for users leveraging TypeScript, AWS Lambda, Next.js, and a variety of other technologies.Create, implement, and execute robust testing protocols to ensure the reliability and stability of our applications.Develop sophisticated database models with a focus on scalability and performance optimization.Build and maintain APIs for both public and internal utilization, enhancing our mobile applications and other systems.Collaborate with the product team to drive ongoing enhancements of Odyssey’s Marketplace platform.Work with cross-functional teams to identify challenges, devise solutions, and close product gaps.Encourage open communication within the team, sharing both obstacles and achievements transparently.Participate in system design, platform management, code reviews, and capacity planning.

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.

Welcome to Maple!At Maple, we're on a mission to revolutionize local businesses through innovative AI solutions. Our AI agents empower restaurants, salons, repair shops, and more by managing customer interactions through natural voice processing.Our broader vision is to create automated ontologies that accurately reflect the inner workings of businesses — including their services, workflows, and unique vernacular. This enables our agents to seamlessly adapt to the specific needs of each business, meeting them where they are.With a growing customer base, robust revenue growth, and support from esteemed investors, we have plenty of exciting developments to share once we connect.About the RoleAs a Full Stack Engineer, you'll immerse yourself in our tech stack, contributing to everything from real-time voice interactions to backend logic and operational tools. Collaborating closely with our product, infrastructure, and design teams, you'll help to build and scale the systems that drive our AI agents, delivering impactful solutions swiftly.Your responsibilities will include owning features from concept to completion, working across user interfaces and APIs, and influencing our architectural decisions as we expand. You'll play a pivotal role in ensuring our software effectively represents real-world business logic at scale.We thrive on collaboration in our NYC office, gathering in person five days a week. Our environment is lively, filled with trust and rapid iteration — we embrace the spirit of experimentation.Key ResponsibilitiesDevelop and maintain full-stack features within our TypeScript monorepo.Engage with frontend technologies like React + Tailwind and backend solutions such as Node.js + Postgres.Create internal tools, customer dashboards, and agent management interfaces.Design APIs and data models that mirror real-world processes.Work closely with design and product teams to tackle complex challenges.Enhance and secure our core infrastructure as usage scales.Lead projects from initial user needs to successful product launch.

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.

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.

At Coast, we are revolutionizing the U.S. B2B card payments landscape, targeting the vast network of 500,000 commercial fleets, 40 million commercial vehicles, and countless drivers across the nation. As traditional technologies fall short of modern demands, we are committed to providing innovative digital experiences and transparent financial services. Our mission is to empower our clients with the Coast Fleet and Fuel Card, a state-of-the-art spend management platform designed for transformative growth. About the Role We are seeking a dynamic and empathetic Manager of Customer Success to spearhead our frontline Customer Success Managers (CSMs) while also managing a dedicated portfolio of accounts. This player-coach approach is essential to fostering trust, empathy, and excellence throughout the customer journey. You will be responsible for mentoring, hiring, and developing a team that ensures outstanding onboarding, activation, and retention for all customer segments. What Success Looks Like Consistently deliver exceptional customer value throughout the customer lifecycle. Achieve excellent Gross Revenue Retention (GRR) and Net Revenue Retention (NRR) through proactive health monitoring and effective retention and expansion strategies. Accelerate the onboarding process and fleet activation to ensure customers realize value quickly and consistently. Be an engaged player-coach, managing accounts and demonstrating product knowledge and customer service fluency to elevate team performance through structured coaching. Enhance the expansion pipeline by identifying and nurturing Customer Success Qualified Opportunities (CSQOs) into viable expansion avenues. What You’ll Do Lead & Coach: Oversee and mentor a team of high-performing CSMs, prioritizing call coaching, onboarding execution, fleet activation, and account health. Own Accounts: Maintain a personal portfolio to remain close to the customer experience and exemplify best practices in onboarding, retention, and account expansion. Drive Activation: Ensure your team expedites onboarding processes and enhances customer engagement. Create Value: Guide CSMs in demonstrating customer value throughout the lifecycle, developing account-specific strategies linked to clear use cases. Maximize Expansion: Assist CSMs in generating CSQOs and establishing a proactive expansion pipeline. Upskill the Team: Implement a systematic 1:1 coaching and enablement framework to elevate onboarding, account health, and overall team performance. Build Systems Excellence: Promote operational rigor and data proficiency across Salesforce, Sigma, Outreach, and other tools.

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.

Join Our Mission at GovWellAt GovWell, we believe that every citizen and taxpayer deserves efficient and effective government services. We are pioneering an AI-driven operating system that revolutionizes how local governments engage with their communities. Our innovative platform replaces outdated software for municipalities and counties, enabling public servants to significantly enhance service delivery and reduce permit and license processing times by as much as 90%.Founded in 2023, we currently support over 5,000 essential processes for agencies across 30+ states, impacting millions of residents. With $10 million in seed funding from Work-Bench and Bienville Capital, our team collaborates in person at our headquarters in New York City. Discover more about our journey in TechCrunch. Why Choose GovWell?A Mission of Significance: We are committed to creating AI-powered solutions that modernize antiquated government systems. This is not just a technical challenge but a historic chance to enhance our relationship with government and ensure that tax dollars are utilized effectively to deliver high-quality services. WATCH: Mission & Vision with CEO & Co-Founder Troy LeCaireReal-World Impact: Our product serves as the backbone for government services that touch millions of lives. Your contributions will directly influence the efficiency of processes like permitting for small businesses and accelerating affordable housing initiatives.Be Part of a Rapidly Growing Startup: Having achieved product-market fit, we are scaling our operations quickly, experiencing 4X ARR growth in the past year. As an early team member, you will gain invaluable insights into building a successful startup, working closely with the founders while enjoying significant autonomy and ownership of your projects. Role OverviewWe are seeking a talented Full-Stack Software Engineer to enhance our core platform that drives faster and more efficient government services. You will engage in both frontend and backend development, designing, building, and deploying features that improve governmental operations and facilitate resident access to services. This position reports directly to our CTO and Co-Founder, Ben Cohen, and provides the chance to take ownership of pivotal product areas in a fast-paced environment.

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.

Are you frustrated with the inefficiencies and complexities of traditional finance? At Superstate, we are too. We are pioneering investment solutions that leverage the rapid, programmable, and compliant nature of blockchain tokenization.In your role as a Senior Full-Stack Engineer, you will play a crucial part in guiding our team to develop exceptional user experiences that are distinctive, reliable, and scalable across all Superstate frontend platforms. You will have the chance to shape the direction, design, and implementation of future product experiences.

Coast builds modern financial services for the U.S. B2B card payments sector, with a focus on commercial fleets and drivers. Many existing technologies in this space lag behind customer needs, so Coast aims to deliver digital tools and transparent financial products that improve daily work for drivers, fleets, and merchants. Backed by top venture funds in fintech and mobility, Coast is growing quickly. Role Overview The Foundations team sits at the core of Coast’s engineering efforts. This group owns essential services like payment processing, transaction authorization, and SMS communications that keep drivers informed about their spending. As a Full-Stack Product Engineer on this team, expect broad exposure across engineering, product, risk, underwriting, finance, and design. The role offers a high degree of autonomy and visibility, making it well suited to those who enjoy taking ownership and collaborating across disciplines. What You Will Do Build and maintain core systems that enable secure, reliable transactions for Coast customers Develop and refine features that support payment processing and communications with drivers Work closely with teams across the company to ensure solutions meet business and user needs Iterate quickly to deliver improvements, gather feedback, and integrate quality at every step Help shape technical decisions and product direction in a fast-growing startup Who We’re Looking For Full-stack engineers who are practical, business-minded, and innovative Comfort working in a collaborative environment with a focus on rapid iteration Strong sense of ownership and ability to operate with autonomy Interest in building foundational systems that impact the entire organization Location Requirement This position is open only to candidates based in New York City and the tri-state area. The Coast office is located in SoHo, Manhattan, offering a creative and energetic setting for in-person collaboration.