Backend Engineer - AI

AnythingAt Anything, we are pioneering the future of AI products for the next generation of entrepreneurs. Our innovative AI agent seamlessly converts English into applications, integrating everything you need to monetize your online endeavors—mobile, web, design, AI, backend, infrastructure, and payments. Since our launch on August 7th, we've rapidly scaled to $5 million in revenue and are continuing to grow at an impressive rate. Explore our offerings at anything.com.Role OverviewThis position is designed for individuals eager to accelerate their growth beyond traditional limits. You will engage with cutting-edge AI systems from day one, owning impactful product development tasks. You will confront complex challenges, continuously learn new tools, and thrive in a dynamic environment where speed, ambition, and personal development are paramount. Supported by experienced engineers, you will have the autonomy to navigate uncertainties and construct systems that serve millions. This is an exceptional opportunity for those wishing to cultivate world-class skills early in their careers.Your ability to act decisively and clarify your reasoning will be essential as you navigate trade-offs, document your processes, and select solutions that align with the broader system architecture.Operational ResponsibilitiesDecompose complex problems into actionable steps and deliver effective solutionsMake informed trade-offs considering speed, accuracy, and long-term sustainabilityDevelop AI-enhanced features utilizing TypeScript and contemporary AI frameworksWork collaboratively with product and design teams to align objectives and execute projects confidentlyEngage with users and interact with the product to grasp real-world needs and identify opportunitiesOvercome challenges with ingenuity and a robust problem-solving approachRapidly assimilate new concepts and apply them to real-world production scenariosStay abreast of the latest advancements in AI research and engineeringEmbrace tasks that challenge your skills and strive to bridge any gaps swiftlyFoster a culture of ownership, ambition, and rapid learningIn a fast-evolving field like AI, we recognize that expertise is not absolute. We value humility, receptiveness to feedback, and a readiness to adapt your viewpoints as you grow. Strong opinions are encouraged, provided they are rooted in curiosity and respect for evidence.

Join Saris AI as a Staff Backend Software Engineer, where you will play a pivotal role in developing innovative solutions that harness the power of artificial intelligence. In this dynamic position, you will collaborate with cross-functional teams, design scalable systems, and contribute to the overall architecture of our backend solutions.

Join Our Team at ReductoAt Reducto, we empower AI teams to harness real-world enterprise data with unparalleled precision. Our innovative approach tackles the challenge of unstructured data, unlocking insights hidden in formats like PDFs and spreadsheets. By training vision models to interpret these documents just as a human would, we enable the development of advanced products, the training of effective models, and the automation of processes at scale.As a rapidly growing company, we have seen a remarkable 7x year-over-year revenue increase, collaborating with a diverse range of companies from top-tier AI teams such as Harvey and Vanta to major enterprises like FAANG and leading trading firms. Our success has attracted over $100 million in funding from renowned investors including A16z, Benchmark, and First Round Capital, and we are on the lookout for a talented Backend/AI Engineer to join our ranks.Exciting OpportunityIn the role of Backend/AI Engineer, you will be instrumental in developing our core API that facilitates document parsing for hundreds of organizations. You will have the chance to integrate state-of-the-art large language models (LLMs), optimize document processing workflows, and construct the infrastructure that democratizes advanced document understanding on a large scale.

Join Us at Retell AIRetell AI is revolutionizing the call center industry by leveraging innovative voice AI technology based on first principles.In just 18 months since our inception, we have attracted thousands of companies that rely on Retell's AI voice agents to efficiently manage sales, support, and logistics calls, previously handled by large teams of human agents. Supported by renowned investors such as Y Combinator and Alt Capital, we have rapidly grown from $5M to $36M in Annual Recurring Revenue (ARR) with a dedicated team of 20.Looking ahead to 2026, our ambition is to establish a state-of-the-art customer experience platform entirely powered by AI. We aim to create intelligent AI “workers” capable of serving as frontline agents, quality assurance analysts, and managers, continuously optimizing customer interactions without the need for constant human oversight.We are on an exciting growth trajectory and are seeking driven individuals who are eager to solve complex technical challenges, accelerate progress, and make a significant impact at one of the fastest-growing voice AI startups.Let’s innovate the future together!Ranked as a top 50 AI app by a16z: https://tinyurl.com/5853dt2x#4 on Brex's Fast-Growing Software Vendors of 2025: https://www.brex.com/journal/brex-benchmark-december-2025One of the top startups on: https://leanaileaderboard.com/

Join our innovative team at bjakcareer as a Backend Engineer specializing in AI Technologies. In this role, you will be responsible for designing, implementing, and maintaining robust backend systems that power our AI-driven applications. You will collaborate with cross-functional teams to develop scalable solutions that enhance user experience and drive efficiency.

Who We AreLightning AI, the driving force behind PyTorch Lightning, was established in 2019. We have developed a comprehensive platform that streamlines the process of creating, training, and deploying AI systems, transforming innovative ideas from research to production with greater efficiency.Following our merger with Voltage Park, a leading neocloud and AI Factory, we are proud to combine cutting-edge developer-focused software with cost-effective, large-scale computational resources. Our platform provides teams with essential tools for experimentation, training, and production inference, all while ensuring security, observability, and control.Our clients range from independent researchers to startups and large enterprises. Lightning AI has a global footprint, with offices in New York City, San Francisco, Seattle, and London, and is supported by prominent investors including Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.Our ValuesMove Fast: We prioritize speed and precision, breaking down complex challenges into manageable steps.Focus: We tackle one goal at a time, working collaboratively to deliver features with accuracy.Balance: We believe sustained performance is rooted in rest and recovery, promoting a healthy work-life balance to optimize your performance.Craftsmanship: We value excellence and attention to detail, taking pride in honing our skills.Minimal: We embrace simplicity as a driver of innovation, eliminating unnecessary complexity through disciplined focus on what truly matters.What We're Looking ForWe are seeking a talented Backend Engineer to contribute to the development and scaling of the Lightning AI platform, encompassing frontend, CLI, API, billing, security, and integrations.The ideal candidate will take ownership of significant features and lead development efforts from conception to launch while collaborating with a highly skilled team of engineers, product managers, and designers. You will have the opportunity to advance groundbreaking technology that will reshape the machine-learning ecosystem!You will join the Blue Squad and report to our Director of Engineering. This is a hybrid position based in our Bay Area office, requiring in-office attendance two days per week.

About UsXOXO AI is an innovative research laboratory focused on creating intelligent interfaces for everyday life. Our team is composed of passionate engineers, designers, and researchers dedicated to solving unique challenges that affect our lives beyond the workplace.Having achieved significant advancements in our infrastructure, architecture, and model layers, we are now seeking talented builders to help us develop the interface and application layer that will bring our visionary concepts to fruition.About the RoleWe are in search of a skilled Backend Engineer to design, construct, and maintain high-quality production backend systems. This position is ideal for individuals who possess a strong command of cloud infrastructure, distributed systems, monitoring, and data persistence, with a keen emphasis on testing and stability.You will be responsible for overseeing backend projects from initial concept through to production launch, ensuring performance, reliability, infrastructure efficiency, and security are prioritized throughout the development process.What You’ll DoDevelop and manage backend services and distributed systems in a production environment using AWS or GCP.Design data storage and retrieval solutions utilizing a combination of vector, OLAP, SQL, NoSQL, caching, and search systems.Establish and maintain observability practices including monitoring, logging, tracing, and alerting to ensure system health and performance.Create and implement comprehensive testing frameworks that account for deployment and runtime failure scenarios.Take full ownership of backend projects, focusing on complex feature development, CI/CD, Terraform, stability, and security.

Join Clipbook: Pioneering the Future of Communication.As the leading vertical AI innovator in the $100 billion communications, public relations, and public affairs sectors, Clipbook is reshaping how leaders listen to and engage with the world.Founded in 2023, we have rapidly established ourselves as the foremost AI company in this domain, attracting investment from notable figures like Mark Cuban, who co-led our seed funding round.Learn more about us:We achieved our first million in Annual Recurring Revenue (ARR) while bootstrapping and reached profitability prior to raising our $3.3 million seed round this year.Our growth trajectory exceeds 10% month-over-month, positioning us to triple our ARR this year.We proudly serve over 200 clients, including the Boston Consulting Group, Weber Shandwick, the Gates Foundation, and numerous government agencies nationwide.We are on track to secure our Series A funding in early 2026.Your RoleDesign and Build Core Backend Systems. Make critical architectural decisions across our backend stack, including Python, Node.js, and PostgreSQL. Own features from conception through deployment and user interaction. We value a pragmatic approach with a strong opinions, weakly held mindset.Create Scalable Data Infrastructure. Develop and manage pipelines for ingesting, normalizing, indexing, and querying large, multi-modal datasets from various sources, including news and social media.Develop High-Performance APIs and Services. Build reliable interfaces and internal services that enhance our product, ensuring security and an effortless experience for users.Integrate AI into Practical Workflows. Implement large language models and classical machine learning models for applications requiring high uptime, including prompt execution and retrieval-augmented generation (RAG) pipelines.Engage with Clients. Participate in client calls to understand their challenges and iteratively develop impactful solutions for communications and public affairs teams.

About UsAt Amari AI, we are transforming the logistics industry by replacing outdated manual workflows with intelligent AI agents. Our cutting-edge technology collaborates with human operators, automating complex, document-heavy processes to enable faster, more accurate shipment processing.Having surpassed the initial development phase, we have successfully achieved product-market fit and are experiencing exceptional growth, with over 100% month-over-month revenue increase. With $5 million raised from notable investors including First Round Capital and Pear VC, we are expanding our platform's capabilities. Our highly skilled team is composed of experts from leading tech companies such as Google, LinkedIn, and Salesforce, as well as prestigious academic institutions and AI research facilities.The RoleIn the capacity of Senior Backend Engineer at Amari AI, you will play a pivotal role in shaping the core data infrastructure that drives our AI-powered logistics platform. This position offers substantial ownership and autonomy, allowing you to design and scale systems responsible for ingesting, processing, and delivering real-time logistics data across various AI components, including pipelines, queues, databases, and search layers. Your technical leadership will significantly influence product reliability and performance from the outset.What You’ll DoDesign and scale distributed backend systems - including queue pipelines, service boundary definitions, and robust failure management strategies such as retry mechanisms, circuit breakers, and graceful degradation.Manage database design and reliability - focusing on schema design, indexing strategies, and query optimization tailored to specific use cases, along with data pipelines that maintain synchronization across systems at scale.Develop AI-driven search infrastructure for real-time logistics lookups and enhanced AI features.Provide technical leadership in a dynamic startup environment - establishing engineering standards, collaborating closely with the founders on strategic roadmaps, and mentoring future backend engineers.Who We're Looking For5–8 years of professional experience in backend software engineering, preferably in high-growth startups or large-scale production environments.Proven track record of end-to-end ownership of backend systems in fast-paced, ambiguous settings.Demonstrated capability in making informed architectural decisions under time constraints, with flexibility to adapt as requirements evolve.

About the Role:Join LaunchDarkly’s AI Configs team as a Backend Engineer, where you will develop essential systems that enhance customer interactions through our web application and manage distributed systems for large-scale AI evaluations. These systems empower our clients to effectively control, monitor, and refine their GenAI capabilities. Your primary programming languages will be Go and Python, and you'll also engage with technologies such as AWS, CockroachDB, and Datadog.The AI Configs team is dedicated to overseeing the entire software development lifecycle for GenAI functionalities from configuration to benchmarking and observation. This is an exciting time for our team as we expand rapidly, and we are eager for you to contribute to writing our next chapter.

About Us:At ResiQuant, we are dedicated to addressing a critical challenge in disaster resilience: the availability of accurate, standardized, and dynamic property data. As climate change and natural disasters such as earthquakes, hurricanes, and wildfires increasingly affect our world, informed risk decisions are often made with incomplete or erroneous data.Our mission is to equip insurers, financial institutions, and asset managers with AI-driven systems that integrate structural engineering knowledge. These systems help to bridge crucial data gaps, providing precise, actionable insights into buildings for improved decision-making.Founded by Stanford PhDs, we are devoted to utilizing state-of-the-art AI technologies to safeguard communities and businesses against the impacts of disasters. At ResiQuant, we envision a future where every organization has access to premier property risk intelligence, fostering resilience and protecting what matters most.The RoleIn this position, you will design and manage the backend systems that drive AI-powered property risk intelligence at enterprise scale. You will be responsible for creating APIs, data pipelines, and model-integrated services that provide reliable, real-time insights trusted by insurers for billion-dollar underwriting decisions. As an integral member of our early team, you will collaborate closely with the founders to establish the technical foundation of the platform and ensure that cutting-edge AI is applied safely and effectively within the insurance sector.What You’ll DoTake ownership of backend features from design through to deployment.Design scalable services and integrations tailored for Fortune 500 insurers.Construct pipelines to ingest, validate, and transform extensive property datasets.Develop and enhance AI-assisted backend functionalities (API design, retrieval-backed features, monitoring).Ensure observability, reliability, and performance across all systems.Work collaboratively with founders, engineers, and customers to rapidly iterate on impactful features.Who You Are0–5 years of engineering experience (1–3 years preferred). Outstanding new graduates are encouraged to apply.Bachelor’s degree in Computer Science or a related field.Proficient in Python, databases, and cloud platforms (AWS/GCP).Experience in delivering AI-assisted or data-intensive services (e.g., model APIs, retrieval pipelines).Strong understanding of backend engineering principles and practices.

Join Databricks as a Staff Backend Software Engineer on our cutting-edge AI Platform team. We are on a mission to simplify data and AI for enterprises worldwide. In this role, you will be pivotal in developing robust backend systems that support our AI initiatives, driving innovation and efficiency.As a member of our dynamic team, you will work with the latest technologies and methodologies to create scalable solutions that meet the needs of our clients. Your expertise will help shape the future of our AI Platform, delivering exceptional user experiences and insights.

Why Weave ExistsAt Weave, we are on a mission to revolutionize the way therapeutic knowledge is captured, transformed, and communicated throughout the drug development process. Our innovative approach combines human expertise with advanced AI tools to accelerate the delivery of safe and affordable medications to patients.The Weave Platform enhances regulatory workflows at every stage by seamlessly integrating AI technology. Partnering with our clients, Weave is dedicated to creating the ultimate AI workbench for the entire therapeutic lifecycle.The Role & Your MissionWe are seeking a talented Staff Backend Engineer to join our engineering team, reporting directly to the Backend Engineering Manager. This role requires navigating between data, AI, and backend systems to ensure the stability, performance, and reliability of our AI systems. You will be responsible for developing innovative solutions to customer challenges, analyzing outcomes, and deploying these solutions into production. Success in this position hinges on your ability to transition smoothly from conception to experimentation, testing, and production. We prioritize effective problem-solving over trends, favoring straightforward, well-tested solutions that are reliable yet impressive.What You Will OwnUnderstanding customer challenges and creating straightforward solutionsCollaborating with Product and Design teams to rapidly identify solutionsWriting efficient, maintainable code using Django, Python, Postgres, and RedisManaging ongoing technical complexities while delivering value on product initiativesWhat You'll BringExperience in an early-stage, product-focused startup environment (fewer than 50 employees)Over 8 years of experience with Django in a production settingPractical experience using LLMs in productionAbility to interact directly with LLMs without the use of abstraction librariesA humble, hungry, and intelligent approachCapacity to work quickly while delivering high-quality outcomesPragmatic and analytical thinking with efficient decision-making skillsBonus: Experience working on products in regulated domains or with critical data privacy and security requirementsBachelor's degree in Computer Science or a related field preferred

Join our innovative team at Databricks as a Staff Backend Software Engineer focusing on our cutting-edge AI Platform. In this pivotal role, you will be responsible for designing, developing, and optimizing backend systems that empower data scientists and engineers to build AI applications efficiently.As a key contributor, you will work closely with cross-functional teams to deliver scalable solutions that enhance our platform's capabilities. Your expertise will drive the development of robust features that support machine learning workflows and big data processing.

Join Databricks as a Staff Backend Software Engineer for our cutting-edge AI Platform. In this pivotal role, you will design and implement robust backend systems that power innovative AI solutions. Collaborate with a talented team to drive impactful projects and shape the future of data and AI.

About DepthFirst AIAt DepthFirst, we recognize that software serves as the backbone of modern civilization, yet its vulnerabilities pose significant risks to integrity, security, and resilience. Our mission is to address these security challenges head-on.We are pioneering the development of intelligent systems that autonomously identify and remediate critical software vulnerabilities. Our focus lies in training and scaling AI agents to uncover zero-day vulnerabilities across extensive customer codebases and widely-used open-source software.Our esteemed founding team brings a wealth of experience in security and large language models, featuring technical leaders from industry giants such as DeepMind, Databricks, Square, and Faire. We are in search of talented individuals eager to explore the intersection of AI, security, and infrastructure.About the Role:We are on the lookout for a seasoned Backend Engineer who will spearhead the creation of the world's first AI-native platform dedicated to autonomously identifying and resolving software vulnerabilities in code. You will be integral to developing the infrastructure that drives our security AI agents, tackling challenges related to large-scale code execution, complex agent orchestration, evaluation benchmarks, and training pipelines. We prioritize engineering excellence and secure designs capable of scaling for thousands of enterprise-level users. Your contributions will be pivotal in redefining how businesses approach security.What Excites You About This Role:Technical Leadership: Mentor team members, establish technical direction, and set best practices for backend engineering at DepthFirst.Architect and Scale: Develop complex coding agent pipelines that efficiently scan and execute large codebases to identify intricate vulnerabilities.Benchmark Development: Build, maintain, and refine evaluation benchmarks for AI agents that mirror real-world user challenges.Ownership: Take charge of our product, influencing its architecture, performance, and long-term success.Impactful Work: Participate in a project that addresses critical security issues. Our initial customers have already seen significant value in resolving vulnerabilities shortly after adopting our solution.

Join Databricks as a Staff Backend Software Engineer on our AI Platform team, where you will play a pivotal role in shaping the future of data analytics and machine learning. You will work collaboratively with talented engineers to design, develop, and enhance robust backend systems that drive our cutting-edge AI solutions. Your innovative mindset and technical expertise will help us deliver unparalleled value to our customers.

Join Air Apps as a Backend Software EngineerAt Air Apps, we’re passionate about innovation and speed. Founded by a family in 2018 in Lisbon, Portugal, we are on a mission to revolutionize how individuals and entrepreneurs manage their resources with our AI-powered Personal & Entrepreneurial Resource Planner (PRP). With over 100 million downloads globally, and offices in both Lisbon and San Francisco, we continue to grow as a self-funded company.As a Backend Software Engineer, you will play a crucial role in designing, developing, and maintaining the server-side components of our applications. Your collaboration with product managers and frontend developers will ensure our services are robust and scalable, ready to support our rapid growth.Join us in this exciting journey to redefine resource management and positively impact lives worldwide.

About Hebbia Hebbia is an innovative AI platform designed for investors and banking professionals, driving alpha generation and strategic advantages in decision-making. Founded in 2020 by George Sivulka and supported by prominent investors like Peter Thiel and Andreessen Horowitz, Hebbia empowers major financial institutions including BlackRock, KKR, Carlyle, Centerview, and 40% of the world’s largest asset managers. Our flagship product, Matrix, is recognized for its unparalleled accuracy, speed, and transparency in AI-driven analysis, managing over $30 trillion in assets globally. We provide financial professionals with the intelligence needed to gain a competitive edge, uncovering signals invisible to humans and accelerating decision-making processes with unprecedented speed and confidence. We are not just enhancing workflows; we are transforming capital deployment, risk management, and value creation across markets. Hebbia is more than a tool; it is the competitive advantage essential for driving performance, alpha, and market leadership. The Team The Agents team at Hebbia develops sophisticated document understanding capabilities and co-piloting experiences for Matrix and extensive, multi-source research. We have established our own agent frameworks powered by distributed systems designed for scalability. Our focus is on creating reliable, steerable, and explainable agent systems that can manage the vast amounts of data our customers handle. Our mission is to unveil the unknowable unknowns for clients worldwide. We aspire to build a product that is indispensable and as user-friendly as your favorite consumer product, moving swiftly to develop first-of-their-kind systems.

About UsAt Amari AI, we are revolutionizing global trade by eliminating outdated, manual workflows in the logistics sector. Our innovative AI agents work in tandem with human operators to automate cumbersome, document-intensive tasks, enabling companies to expedite shipment processing while minimizing errors.Having successfully transitioned beyond the initial development phase, we have established a strong product-market fit, evidenced by our impressive growth rate of over 100% month-over-month in revenue. With a recent funding round of $5 million from First Round Capital and Pear VC, we are poised for significant expansion. Our highly skilled team comprises professionals from leading tech giants such as Google, LinkedIn, and Salesforce, as well as esteemed academic institutions and AI research labs.The RoleWe are seeking a talented Production Engineer who expertly navigates the realms of software development and systems engineering. Your primary objective will be to ensure our production environment is robust, fully automated, and easily observable. You will take charge of our CI/CD pipelines, oversee our AI infrastructure, and develop the internal tools that empower our development team to deliver code more rapidly and reliably.