Founding Backend Engineer at Phaselaw | New York City

Join our dynamic team at Antimetal as a Backend Engineer to enhance and scale the systems that power our innovative investigation and automation engine.In this pivotal role, you will develop core backend and platform services, architect solutions for scalability, and ensure our infrastructure can accommodate swift product growth.About AntimetalAntimetal is r…

Antimetal is on the lookout for a Research Engineer to enhance the intelligent systems that drive our innovative solutions. In this role, you'll be tasked with prototyping cutting-edge methodologies, conducting experiments, and overseeing the transition from research to real-world application. Collaboration with our platform and product teams will be key as you help shape the capabilities of our AI agents and contribute to the development of evaluation methodologies.Modeling infrastructure and its observability is a challenging domain. The telemetry we handle is often high-volume, chaotic, and transient, with ground truth that is often only approximate. Our goal is to develop AI agents capable of understanding this intricacy and reasoning about operational dynamics, including implementing code and configuration modifications.Research Focus AreasInfrastructure Intelligence: Developing models to comprehend infrastructure behaviors and the underlying reasons, such as anomaly detection, issue forecasting, telemetry analysis across logs, metrics, events, and traces, and understanding causal relationships. These foundational capabilities enable our agents to reason effectively about infrastructure.Autonomous Agents: Designing long-running, parallel agents that can identify, diagnose, and remediate infrastructure problems, including the ability to fix code and configuration issues. Enhancements in multi-step reasoning, orchestration, context management, memory, and reinforcement learning will be essential for this role.Evaluation: Ensuring the performance of our agents and guiding improvements by collaborating with the platform team to establish evaluation methodologies, generate synthetic data, analyze past incidents, and model the domain.About AntimetalAntimetal aims to redefine the future of infrastructure management. Our mission is to create a platform that identifies, resolves, and prevents issues, allowing engineers to focus on what they excel at: developing exceptional products.Your Responsibilities:Experiment, Evaluate, Iterate, Ship: Conduct experiments across our research domains, analyze outcomes, validate effective methods, and transition successful strategies into production.Build Evaluation Infrastructure: Work alongside the platform team to establish live and offline evaluation systems, benchmarks, and synthetic data generation tools that facilitate continuous improvement.

Join us at antimetal as a Founding Recruiter! In this pivotal role, you will play a crucial part in shaping our team's future by identifying and attracting top talent to drive our innovative projects forward. This is a unique opportunity to be part of a dynamic startup environment where your contributions will have a direct impact on our growth and success.

Join our dynamic team at Antimetal as a Product Designer, where you'll have the opportunity to create intuitive interfaces and exceptional user experiences that drive the functionality of our cutting-edge investigation and automation platform.This pivotal role involves designing and launching high-performance user interfaces, prototyping innovative interaction models, and ensuring that our frontend mirrors the scalability and dependability of the infrastructure it supports.

As a Product Engineer (Agents) at Antimetal, you will play a crucial role in developing our innovative platform driven by our AI agents. Your responsibilities will encompass agent orchestration, data pipelines, APIs, and user interfaces, allowing you to work across the entire technology stack to deliver insights that benefit our users.We seek a proactive individual who can collaborate effectively with both the platform and research teams, transforming experimental ideas into production-ready features while managing projects from inception to completion, even amidst uncertainty.

About FLORAAt FLORA, we empower the new creative class with innovative tools that enhance their craft. Our intelligent platform utilizes cutting-edge AI models to facilitate creativity. With a small but dynamic team of approximately 20, we have successfully raised $52 million from notable investors such as Redpoint Ventures, Hanabi Capital, Menlo Ventures, Justin Kan, and Gabe Whaley (founder of MSCHF). Our clientele includes esteemed names in the creative industries, such as Pentagram, Lionsgate, and Nike.About the RoleWe are seeking a Senior Backend Engineer to be a pivotal part of FLORA's platform development. You will engage with our database layer, generation infrastructure, observability tools, and the services that enable a seamless real-time creative experience on a large scale.As part of our skilled team of full-stack engineers, you will leverage your extensive backend expertise to resolve our most challenging systems issues. You will take charge of complex projects, work closely with engineering leadership on architectural choices, and evolve with our backend team as we expand.Your ResponsibilitiesDesign and implement generation orchestration infrastructure capable of supporting significant scale.Enhance observability across our infrastructure to minimize failure rates and proactively identify issues before they affect users.Optimize our database layer through effective schema design, indexing strategies, and migrations as we grow.Collaborate on architectural decisions to facilitate the introduction of new features.Partner with the CTO, Product Engineering, and Intelligence Engineering teams to ensure a stable and high-performing foundation for features across all client platforms.Desired Qualifications:A minimum of 5 years of experience in building robust backend systems and operating services at scale.At least 3 years of in-depth experience with TypeScript, emphasizing type safety, error handling, and code organization.Demonstrated ability to analyze ambiguous problems and deliver well-structured solutions.Experience with queue-based architectures, including job scheduling, orchestration, and fault tolerance.Strong instincts for observability; experience in system instrumentation, dashboard creation, and utilizing data to enhance reliability.Excellent communication skills and a collaborative approach to technical decision-making.

About JuniorAt Junior, we are innovating the investment research landscape by developing advanced LLM-powered tools tailored for private market investors. Our clientele features some of the globe's leading private equity and consulting firms, collectively managing investments worth billions each year. We pride ourselves on being a profitable and bootstrapped enterprise, currently expanding our dynamic team of 24 across our London and NYC offices.Discover more about our mission and values here. Role DescriptionIn your role as a Backend Engineer, you will play a pivotal part in constructing and enhancing the systems that drive our AI-powered research platform. This systems-level position is perfect for engineers passionate about data flows, orchestration, and optimizing performance across intricate distributed systems.As one of our initial engineering team members, you will enjoy the distinctive chance to:Deliver results swiftlyDesign and scale backend systems that facilitate high-throughput LLM interactions, vector search, and multi-agent orchestration.Integrate AI infrastructure across various model providers, databases, and internal APIs to develop cohesive and effective systems.Take charge of reliability and observability, aiding in the evolution of our database (Postgres / ClickHouse) and job orchestration systems.Prototype innovative backend functionalities (retrieval pipelines, caching layers, async task queues) that empower quicker and smarter development.Influence our engineering culture About YouWe seek product-oriented backend engineers who:Are based in NYC, as we operate 5 days a week in-person.Are enthusiastic about the convergence of AI infrastructure and systems design.Have a track record of leading projects from inception to completion.Are eager to participate in product decisions.Possess proficiency in our technology stack: Next.js, TypeScript, PostgreSQL.Feel that there is always room for faster development.

About madecardAt madecard, our mission is to empower homeowners by saving them time, money, and stress. Our flagship product, the Made Card, is a unique credit card tailored specifically for homeowners, offering exceptional rewards on mortgage payments, home improvements, utilities, and essential purchases. Every transaction fuels a customized home management platform where users can effortlessly oversee their home systems and appliances, stay proactive with maintenance, and access assistance ranging from AI-driven insights to on-site services precisely when needed. By integrating financial tools, valuable data, and trusted professionals, we enable individuals to gain more control, realize significant savings, and ultimately enjoy their homes more fully.We collaborate with prominent national players in the residential homeownership sector, encompassing mortgage lenders, servicers, real estate brokerages, and home improvement providers, seamlessly integrating madecard into pivotal moments of the homeowner journey. This enables us to connect with millions of households nationwide and provide tangible benefits to homeowners.Supported by esteemed investors like Village Global, Jump Capital, Recharge Capital, and Soma Capital, our leadership team possesses extensive experience in fintech, mortgage, and credit card sectors, having previously worked at Ramp, Bain Capital, JP Morgan Chase, American Express, and Morgan Stanley. We are dedicated to creating a financial and engagement platform for the next generation of homeowners, placing them at the forefront and redefining what it means to truly feel at home.About the RoleWe are seeking a Backend Engineer to join our team in building and scaling the services that undergird the Made Card and homeowner platform. In this role, you will be instrumental in the design, development, and upkeep of core systems while closely collaborating with product, frontend, and infrastructure teams. This opportunity is ideal for an individual who thrives on tackling complex backend challenges and aspires to grow within a dynamic startup environment.What You’ll DoFeature Development: Develop and maintain backend services and APIs utilizing Python.Database & Systems: Design, implement, and enhance data models across Postgres, DynamoDB, and Redis.Infrastructure: Assist in deploying and scaling applications using Kubernetes, Docker, and AWS.Collaboration: Work alongside frontend engineers, product managers, and designers to deliver comprehensive features.Code Quality: Produce clean, maintainable, and testable code while participating in code reviews and team discussions.

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

At Endex, we are pioneering the future of finance by integrating advanced AI technologies with the expertise of financial professionals. Our mission is to create the most sophisticated AI-powered digital coworker for the financial services sector. As a Backend Engineer, you will be a vital part of our team, architecting and developing the core systems that drive our innovative financial analysis platform.In this role, you will design and implement robust APIs, services, and application logic that convert intricate financial data into user-friendly tools for investment experts. We are looking for candidates who:Have a proven track record in creating scalable backend systems capable of managing mission-critical transactions.Possess extensive experience in API design, service communication patterns, and database optimization.Are committed to writing clean, efficient, and testable code that excels in performance.Enjoy tackling complex business logic challenges and devising elegant technical solutions.Are enthusiastic about employing modern engineering practices within the financial technology domain.Join us in revolutionizing the AI-native workspace for finance, transforming the competitive landscape for thousands of firms.

About madecardAt madecard, our mission is to empower homeowners by saving them time, money, and stress. Central to this mission is the Made Card, a credit card crafted specifically for homeowners that offers unmatched rewards on mortgage payments, home improvements, utilities, and essential purchases. Each transaction fuels a personalized home management platform, allowing users to oversee home systems and appliances, anticipate maintenance needs, and access support—from AI-driven insights to in-person services—precisely when they need it.We collaborate with leading national partners in the residential homeownership sector, including mortgage lenders and home service providers, which enables us to reach millions of households nationwide and deliver substantial benefits to homeowners.Supported by prestigious investors such as Village Global, Jump Capital, Recharge Capital, and Soma Capital, our leadership team boasts extensive expertise in fintech, mortgage, and credit card industries, having held roles at Ramp, Bain Capital, JP Morgan Chase, American Express, and Morgan Stanley. We are dedicated to building a financial and engagement platform for the next generation of homeowners—one that prioritizes the homeowner and redefines what it means to truly feel at home.

Join hifi as a Backend Software Engineer and become a pivotal part of our innovative team. We are seeking a skilled engineer who is passionate about developing robust and scalable backend solutions. As part of our dynamic environment, you will work on exciting projects that challenge your technical skills and allow you to grow.

Join Clarion as a Senior Backend EngineerAt Clarion, we are transforming the way healthcare communicates in the era of AI. With the alarming statistic that clinics miss 30–40% of patient calls, we aim to alleviate the burden of administrative tasks on healthcare staff. Our vision is to empower AI agents to manage essential workflows—such as scheduling, billing, prescription refills, and follow-ups—allowing healthcare professionals to prioritize patient care.We are developing the communication infrastructure that modern healthcare requires. Our AI agents not only answer calls but also execute workflows from start to finish, ensuring that patients receive the attention they deserve. To date, we have successfully managed hundreds of thousands of patient interactions with virtual care companies, health systems, and a $5 billion health insurance provider.Founded by a physician trained at Stanford and Harvard, along with a former Amazon Alexa engineer who led AI and machine learning teams at Salesforce, Clarion has secured $5.4 million in funding from prestigious investors including Accel, Y Combinator, and Sequoia. Our in-person team is based in New York City, and we are rapidly working to address one of healthcare's most pressing challenges.Why This Role is UniqueImmediate Impact: Join us at a pivotal moment with numerous paying customers and a rapidly growing revenue stream, giving you the chance to shape foundational backend systems.Addressing Critical Issues: Your contributions will directly influence healthcare communication, impacting millions of individuals.Work with Experts: Collaborate closely with founders who possess deep insights into both healthcare operations and large-scale AI systems, facilitating swift decision-making and genuine ownership of projects.Your ResponsibilitiesBackend Systems: Design, develop, and maintain the services, data models, and business logic that power Clarion’s AI agents and healthcare workflows.Workflow Management: Create infrastructure for multi-step, asynchronous workflows, including AI-driven processes with conditional logic, retries, and effective failure management.Healthcare Integration: Lead crucial integrations with Electronic Health Records (EHRs) and legacy healthcare platforms through APIs and Robotic Process Automation (RPA).Platform Development: Build internal abstractions and tools to enable the team to deploy and customize AI assistants for new clients efficiently and reliably.Security Measures: Establish and uphold backend authentication and authorization protocols, ensuring compliance with industry standards.

About UsAt Lightning AI, the pioneering force behind PyTorch Lightning, we are dedicated to creating an innovative platform for developing, training, and deploying AI systems. Established in 2019, our mission is to seamlessly transition ideas from research to production, minimizing friction along the way.Our merger with Voltage Park, an advanced AI Factory, allows Lightning AI to offer cost-effective, large-scale computational resources alongside developer-friendly software. We equip teams—ranging from solo researchers to large enterprises—with the necessary tools for experimentation, training, and production inference, all while ensuring security, observability, and control.With a global presence and offices in New York City, San Francisco, Seattle, and London, we are supported by esteemed investors including Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.Our ValuesMove Fast: We prioritize speed and precision, breaking down complex challenges into manageable tasks.Focus: By collaborating effectively, we tackle one objective at a time, ensuring high-quality feature delivery.Balance: We believe that sustained performance stems from a healthy work-life balance, allowing our team to thrive.Craftsmanship: We take pride in our work, focusing on innovation through excellence and attention to detail.Minimal: Simplicity drives our solutions, as we strive to eliminate unnecessary complexity and focus on what truly matters.What We Are Looking ForWe seek a passionate Backend Engineer to contribute to the development and scalability of the Lightning AI platform. This role encompasses working on various aspects including the frontend, CLI, API, billing, security, and integrations.As a key player, you will own significant features and lead development from concept to deployment while collaborating with a talented team of engineers, product managers, and designers. Your focus will be on speed, quality, and iterative improvement as you help shape transformative technology in the machine-learning landscape!You will be part of the Red Squad and report directly to our Director of Engineering. This is a hybrid position based in our New York City office, with an expectation of 2 days in the office per week.

About Method SecurityMethod Security is at the forefront of revolutionizing cybersecurity, especially in an age where AI-driven threats are escalating. Our mission is to protect essential institutions—ranging from government entities to defense organizations and critical commercial sectors—against these advanced threats by crafting state-of-the-art, autonomous defense solutions. We unite our expertise in AI, cybersecurity, and software development to create innovative products that shift the balance of power in security from offense to defense.Our Team and ValuesJoining Method means becoming part of a distinguished, purpose-driven team that champions innovation, transparency, and excellence. We operate with intent, valuing diverse viewpoints and experiences while holding ourselves to high standards of quality. Our team thrives on trust, efficiency, and mutual respect. We are dedicated to fostering an environment where each member can make significant contributions. At Method, you will have the freedom to propel projects forward, the support to overcome challenges, and the chance to shape the future of cybersecurity.Role OverviewAs a Backend Engineer at Method Security, you will be integral in building and scaling the foundational systems that drive our autonomous cybersecurity products. This position entails designing and optimizing distributed systems to adhere to stringent performance and latency benchmarks, along with implementing secure APIs and robust database structures. Collaborating with a high-performing team, you will tackle intricate technical challenges to guarantee our backend infrastructure remains secure, efficient, and dependable.

The City of New York is seeking a dedicated and skilled Project Engineer to join our dynamic team. In this role, you will be responsible for overseeing various engineering projects, ensuring they meet quality standards and are completed on time and within budget. You will collaborate with other professionals and stakeholders, provide technical guidance, and help implement innovative engineering solutions for the city's infrastructure.

Why Join Plot?At Plot, we are pioneering the future of social intelligence through our innovative AI-driven platform. Our mission is to empower some of the world’s leading brands to comprehend cultural dynamics, identify emerging trends, and effectively engage their communities on a large scale. As a rapidly expanding, venture-backed startup co-founded by visionaries from Reddit and Plaid, we proudly serve a roster of renowned clients, including Tory Burch, Lululemon, and La Roche-Posay.Operating at the crucial nexus of applied AI and vast data systems, we transform millions of short-form videos daily into structured insights on culture and consumer behavior. Plot renders unstructured social media data comprehensible at scale, allowing brands to cultivate a profound and systematic understanding of trends, audiences, and influence.You will become part of a dynamic and resourceful team where engineers take full ownership of systems — not just individual tasks. Collaborating closely with the founders, you will have the opportunity to shape the foundational architecture and make pivotal decisions that will influence Plot's scaling strategies for years to come. If you relish tackling ambiguous challenges, engaging in deep systems thinking, and constructing infrastructure that unlocks extensive product functionalities, Plot is your ideal environment. This position is also perfect for those aiming to evolve into technical founders, as we cultivate a strong founder’s mindset.

Company OverviewAt tennr, we are revolutionizing the referral process in healthcare. When you visit a doctor and receive a referral to a specialist, the waiting game begins. Unfortunately, patients often face delays that can last days, weeks, or even months due to overwhelmed specialists and the cumbersome manual processes involved. Our cutting-edge platform eliminates these bottlenecks by ensuring that every referral is processed promptly and accurately, allowing healthcare providers to enhance their service delivery. Powered by RaeLM™, our sophisticated technology reads, extracts, and acts on comprehensive patient information, enabling providers to capture more referrals, minimize denials, and streamline service times.Position OverviewWe are on the lookout for a Senior Backend Software Engineer who is passionate about systems architecture, data modeling, and large-scale workflow orchestration. In this dynamic role, you will be responsible for designing and implementing features end-to-end within our backend services and infrastructure, ensuring they provide direct value to our customers. Your expertise will contribute to the optimization of data schemas, the construction of resilient backend services, and the seamless integration of third-party systems.You will spearhead initiatives focused on high-volume workflow automation while emphasizing the development and enhancement of scalable data processing and machine learning infrastructure. This role entails designing and maintaining intricate workflows that harness machine learning to drive automation, alongside leading performance optimization efforts to guarantee reliability, scalability, and adherence to best practices across the technology stack.Collaboration is at the heart of our operations; you will closely partner with sales and customer experience teams to integrate customer feedback, while also working hand-in-hand with engineering colleagues to bring robust solutions to fruition. We seek an individual who embodies a founder’s mindset, excels in systems-wide thinking, and is proactive in driving projects from inception to completion.The ideal candidate will possess a rich background in backend architecture, event-driven systems, and orchestration frameworks, coupled with a demonstrable history of building production-ready systems. You will play a pivotal role in shaping the technical foundation of our platform, ensuring that it remains reliable, scalable, and adaptable as we grow.

OverviewJoin Tetrix, a dynamic startup dedicated to revolutionizing the way institutional investors engage with alternative markets. Our cutting-edge AI-driven platform transforms chaotic, unstructured private market data into actionable insights in real-time. With features such as automated document retrieval, AI-powered data extraction, and comprehensive portfolio analytics, we are paving the way for a new standard in financial technology. As we rapidly expand, we are seeking passionate individuals to collaborate with leading capital allocators and help shape the future of investment strategies. Who We AreAt Tetrix, we pride ourselves on our strong industry knowledge combined with modern technological expertise. Our small yet dedicated team thrives on a culture of trust, ownership, and curiosity, empowering every member to share ideas, challenge norms, and grow collectively. Our visionary co-founders, Olivier (CEO) and Naunidh (CTO), forged their partnership during their MBA studies at Stanford and launched Tetrix in the summer of 2023. Who You AreYou are proactive and hands-on, taking initiative and driving projects forward.You learn quickly and are adaptable, tackling challenges with creativity and enthusiasm.You maintain a customer-first mindset, ensuring that user experiences are at the forefront of your backend decisions.You value collaboration, fostering transparency and effective communication within the team.You bring at least 5 years of experience in Python, ideally in fast-paced environments, with a preference for individuals who have contributed to open-source projects. What You’ll DoDesign and implement robust backend systems that support our platform's functionalities.Collaborate with cross-functional teams to define and enhance product features.Engage in code reviews, ensuring best practices and quality control.Optimize and maintain existing backend infrastructure to improve performance and scalability.