Senior Backend Software Engineer

At alpaca-vc, we're revolutionizing the venture capital landscape by developing cutting-edge technical infrastructure that leverages the power of AI to significantly enhance operational efficiency. We are on the lookout for a skilled AI Workflow Engineer to lead the architecture and implementation of our innovative systems from start to finish.This position …

At Profound, we are pioneering the essential agentic framework for contemporary enterprises. Our Workflow Runner serves as the execution backbone that transforms intricate AI tasks into dependable, modular workflows. In this role, you'll be instrumental in crafting the fundamental components—execution, scheduling, state management, and streaming—that drive intelligent systems at scale.Key ResponsibilitiesDevelop core workflow engine primitives designed to orchestrate agents, tools, and data flows.Take ownership of the real-time control plane, encompassing streaming events, reliable job orchestration, idempotency, and replay mechanisms.Deliver high-impact systems that transition prototypes into production-ready, scalable workflows.Design and implement Rust-oriented backend services with clean APIs for the creation, execution, and monitoring of graph or DAG workflows.Create reliable job orchestration with varied response modes, including blocking, streaming, and fire-and-forget, while ensuring durable state.Enhance tenant isolation, security, and access protocols across our platform.Optimize runtime behavior, including scheduling, backpressure management, timeouts, retries, and idempotency.Evolve schemas and repositories, managing migrations, indexing, and query optimization.Incorporate meaningful telemetry and elevate standards for testing and operational excellence.Collaborate closely with product, frontend, and data teams to roll out high-impact features.Who You AreDemonstrated portfolio or GitHub showcasing depth in backend or systems design.Proficient in a modern systems language, ideally Rust, and comfortable managing services end-to-end in a production environment.Solid understanding of SQL and relational data modeling, with practical experience in PostgreSQL.Familiar with distributed systems patterns, including messaging, streaming, retries, idempotency, and backpressure.Knowledgeable about caching and state management systems like Redis and real-time delivery using SSE or WebSockets.Strong understanding of API authentication, authorization, multi-tenancy, and security best practices.Pragmatic, collaborative, and product-focused, thriving in a dynamic in-person work environment.Experience in building or operating workflow engines, schedulers, or agent runtimes is a plus.

Join Thread AI as an Applied AI EngineerAt Thread AI, we are pioneering the development of an AI-native workflow orchestration engine. We seek passionate individuals to be part of our dynamic team, dedicated to simplifying infrastructure for enterprises and public sector agencies eager to harness the full potential of AI.Based in New York, our thriving team comprises specialists in AI, product development, and engineering, all with proven experience in managing intricate workflows and infrastructure.Our Engineering CultureWe pride ourselves on maintaining a tight-knit technical team that integrates engineering, research, design, product, and operational excellence. Our philosophy emphasizes a flat organizational structure and collaborative environment, enabling us to innovate rapidly and create superior products compared to larger, hierarchical organizations.Your RoleAs an Applied AI Engineer, you will be instrumental in architecting and implementing robust AI workflows. Daily, you will design end-to-end customer workflows, oversee their transition to production, and address real-world challenges. Your responsibilities will include crafting innovative, scalable, and high-performance software solutions that align with both customer needs and our strategic goals. You will collaborate closely with our sales and marketing teams to develop forward-thinking prototypes that will guide the future product and infrastructure direction of Thread AI and our clients.

Join the Thread AI Team!At Thread AI, we are pioneering the development of an innovative AI-native workflow orchestration engine. We invite passionate and skilled professionals to be part of our expanding team. Our mission is to simplify infrastructure for enterprises and public sector organizations aiming to maximize the potential of AI.Based in New York, our dynamic team comprises experts in AI, product development, and engineering, all with a proven history of designing and executing intricate workflows and infrastructure.Our Engineering CultureWe pride ourselves on being a compact, dedicated technical team that encompasses engineering, research, design, product, and operations. We believe that a small, committed team with a flat structure and a collaborative ethos can achieve more and innovate faster than larger, hierarchical organizations.Role OverviewWe are seeking a talented software engineer to take charge of implementing and overseeing the security of our internal information systems’ infrastructure and processes. You will collaborate closely with senior engineers to develop robust security capabilities, enforce security policies, and vigilantly monitor internal systems for potential security threats.

ABOUT THE ROLEJoin Peloton as a Media Workflow Engineer, where you will be pivotal in shaping our post-production and broadcast infrastructure. This dual-role position combines impactful project execution with essential operational support. Act as the chief architect for our Media Asset Management (MAM) and workflow systems, ensuring optimal performance of our content delivery in a fast-paced, global broadcasting environment.YOUR DAILY IMPACT AT PELOTONOversee the upkeep of our MAM (Backlight Iconik) and shared storage systems (OpenDrives, Quantum).Design, construct, and enhance automated workflows in both on-premises and cloud environments, utilizing transcoding pipelines such as Telestream Vantage, Hiscale FLICS, and GLIM.Lead the technical aspects of metadata taxonomy, video codecs, and delivery standards, ensuring smooth integration across software and cloud engineering teams.Deliver expert-level support for Mac, Linux, and Windows server environments while maintaining comprehensive technical documentation for our evolving architecture.Collaborate with Post-Production and Broadcast teams to translate creative visions into robust technical solutions, from cloud-based archiving to infrastructure enhancements.As a vital member of our agile team, assist with Proof of Concept (PoC) testing for new technologies and explore emerging tools to support RFPs, ensuring your voice plays a significant role in the evolution of our systems and workflow technology stack.Act as the primary technical liaison for third-party vendors, ensuring the maintenance, troubleshooting, and optimization of critical software and hardware to keep our systems resilient and up to date.

Join Thread AI as an Applied AI Strategist and be at the forefront of transforming enterprise operations through innovative AI solutions. At Thread AI, we are dedicated to simplifying the complex landscape of AI-native workflow orchestration for enterprises and public sector agencies.Our team, based in the heart of New York, comprises skilled AI professionals, product specialists, and engineering experts with a proven track record of managing intricate workflows and infrastructure. We invite you to become a part of our dynamic team that is committed to pushing the boundaries of what AI can achieve.Your RoleAs an Applied AI Strategist, you will serve as the vital link between our composable AI infrastructure and the multifaceted realities of our clients' businesses. Collaborating with a dedicated team of Applied Engineers, you will deploy our platform to tackle the most pressing operational challenges faced by enterprises today.Your core mission will be to integrate disparate workflows and raw ambitions into a cohesive understanding of the challenges at hand, identifying how AI agents can offer solutions and where tangible impacts can be realized. By immersing yourself in our clients' complex processes, you will design AI solutions that revolutionize their operational methodologies. This role demands a curious and analytical mindset, a strong intuition for value-driven workflows, and a deep sense of user empathy, empowering our clients to enhance their capabilities.Key ResponsibilitiesDeep-Dive Discovery: Conduct onsite assessments and engage with customer stakeholders to identify significant bottlenecks and high-impact opportunities for AI automation.Solution Architecture: Utilize the Lemma platform to develop tailored agents and workflows, actively configuring logic and integrations to address specific user challenges.Technical Integration: Collaborate closely with our Applied AI Engineering team to facilitate seamless connections for customers between APIs, data sources, and models within the Lemma platform.User Enablement: Lead training sessions to ensure AI solutions align with user needs and generate measurable impacts on their operations.Strategic Reporting: Present deployment outcomes and future roadmap proposals to diverse audiences, from technical leads to C-suite executives.Product Feedback Loop: Work alongside our Software Engineering and Product Design teams to integrate field intelligence into the core Thread AI platform.

Join Thread AI as a Senior Applied AI DesignerAt Thread AI, we're pioneering the development of an AI-native workflow orchestration engine designed to simplify infrastructure for enterprises and public sector agencies. Our mission is to empower organizations to fully leverage AI and AI Agents.Based in New York, we boast a talented team of AI specialists, product developers, and engineers who excel at navigating and executing complex workflows and infrastructure challenges.Our Design & Product CultureAs a compact yet passionate technical team, we handle engineering, research, design, product management, and operations. We believe that a small, dedicated group with a flat hierarchy and a collaborative ethos can innovate more swiftly and effectively than larger organizations. In this role, you will play a pivotal part in shaping our product vision and design philosophy.Your RoleAs our Senior Applied AI Designer, you will enhance the design of our innovative AI Workflow Orchestration platform, facilitating seamless collaboration between human experts and AI agents. Your role will encompass crafting novel, user-friendly experiences that simplify complex AI workflows for users with varying technical backgrounds. Collaborating closely with engineering and product teams, you will translate user requirements and technical capabilities into an intuitive and robust product.

Senior AI EngineerAbout Fonzi AIFonzi AI is a dynamic startup with robust funding, reshaping the hiring landscape through innovative AI solutions. Launched recently, we have quickly garnered thousands of talented engineers to our platform. Our mission is to create an AI-driven recruiting marketplace that connects millions of job seekers with employers, where intelligent AI recruiters learn about individual preferences and seamlessly match candidates with ideal opportunities.The RoleWe are on the lookout for a Senior AI Engineer who will spearhead the development of groundbreaking AI experiences that will shape the future of recruitment. In this role, you will work closely with our engineering team, collaborating with full-stack engineers to integrate AI capabilities into our platform. Your AI features will be integral to the overall functionality of our application.You will engage in AI experimentation, implementation, and teamwork to deliver cohesive products. If you have experienced that transformative moment when AI revolutionizes how we work and are eager to create products that embody that potential for users, this position is tailored for you.What You'll DoDevelop AI agents capable of engaging in meaningful conversations with candidates and recruitersDesign and implement AI-driven features from the ground up, including voice interfaces, coaching systems, and intelligent matching algorithmsExperiment with cutting-edge models and techniques, making informed decisions regarding cost, quality, and speedProduce high-quality production TypeScript code that transforms AI concepts into reliable user experiencesRapidly prototype new AI functionalities and scale successful innovations to serve thousands of usersCollaborate closely with the engineering team to ensure seamless integration of AI features across the entire platformWork alongside full-stack engineers to pinpoint opportunities where AI can enhance the recruitment experienceStay abreast of developments in the AI field while maintaining focus on delivering tangible productsRequired ExperienceProven AI development experience: You have successfully built and deployed AI/LLM features in production for over a yearFull-stack engineering skills: Strong expertise in TypeScript, React, and Next.js, able to contribute to all aspects of development

Join a team of former Google engineers who have developed some of the world's most significant defensive platforms, including Safe Browsing and reCAPTCHA. We are embarking on an ambitious journey to combat a new generation of adversarial AI attacks that organizations face today.Currently operating in stealth mode, we are targeting a $5B+ market that is primed for innovation. Conventional detection strategies are lagging behind as adversaries leverage AI to create highly customized attacks that evade traditional systems.Your Mission: Design a comprehensive network of AI agents that are efficient, cost-effective, and precise, working in unison to identify and neutralize emerging threats. You will delve into real-time threat data, iteratively refining your agents in response to the evolving battlefield. These agents will function under a rapid iteration and adaptive learning orchestration layer.Challenges and OpportunitiesRapidly Changing Models: The strategies that were effective yesterday may become obsolete tomorrow.Intelligent Adversaries: We are engaged in a real-time arms race against sophisticated AI-driven attackers.No Established Playbook: We are innovating new detection methodologies as threats develop, making this a high-stakes, impactful role from day one.If you are an engineer who thrives on solving complex problems and values quick feedback, this challenge is for you.Why We Will SucceedVast Market Potential: A rapidly expanding market valued at over $5B, with slow-moving traditional competitors.Proven Track Record: Our team has previously built core technologies behind Safe Browsing (serving over 5B users) and reCAPTCHA (protecting more than 5M websites) during our tenure at Google.Third-Time Charm: This is our third endeavor in creating a category-defining security company, and we know how to scale both technology and business effectively.AI and Security Expertise: Our approach integrates AI and security from the ground up rather than as an afterthought.Elite Team: We only recruit top talent, with many team members being in the top 1% of engineers from Google.Agility: We prioritize speed and efficiency, ensuring a dynamic work environment.

Senior AI Product EngineerAbout Fonzi AIAt Fonzi AI, we are a pioneering Series A startup, backed by Lightspeed, dedicated to transforming the hiring landscape through the power of AI. Established by seasoned entrepreneurs from Kumospace, we launched our innovative AI-driven recruiting marketplace in June 2025 and have quickly become revenue-positive, partnering with nearly 100 employers—over 75% of whom are AI-native companies. Our platform is home to thousands of engineers, and we proudly host Match Days every two weeks, where pre-screened candidates receive competitive offers from leading employers.Our vision is to create an infrastructure where AI comprehensively understands the roles of engineers, their aspirations, and seamlessly matches them with suitable opportunities. We are committed to moving beyond surface-level AI applications and are building toward a future where intelligent systems manage the entire recruiting workflow. We seek engineers who share our passion for this vision and are eager to help shape the future with us.The RoleAs a Senior AI Product Engineer, you will embrace a multifaceted role in this new era of software development. The distinction between "full-stack engineer" and "AI engineer" is rapidly diminishing, and at Fonzi, we have embraced this convergence.You will take ownership of features from inception to deployment: designing database schemas, developing React components, and creating the AI agents that infuse intelligence into our platform. Some weeks, you’ll focus on building robust backend systems; other weeks, you'll experiment with cutting-edge models to develop features that feel transformative. Most weeks, you’ll engage in both aspects.We are in search of engineers who have experienced the "aha moment"—those who recognize that AI fundamentally alters the software development landscape and wish to work at a company where this principle is embedded in every product decision.What You'll BuildAI Agents that facilitate intelligent conversations with candidates, including voice interfaces for onboarding engineers, coaching systems for interview preparation, and adaptive matching algorithms that evolve with each interaction.The Platform powering a two-sided marketplace, utilizing TypeScript/Node.js for backends, React/Next.js for frontends, and PostgreSQL for the data layer, all designed for speed and rapid iteration.AI-Powered Features from conception to production—rapidly prototype using the latest models, strategically balancing cost, quality, and speed, then scale successful features to thousands of users.The Intelligence Layer that enhances our marketplace with each candidate interaction, creating a data flywheel that will establish our competitive edge.

Role overview As Engineering Manager for Applied AI & Platform at norm-ai in New York City, this position leads a team dedicated to bringing artificial intelligence into the company’s platform products. The manager sets direction for projects, supports the technical development of engineers, and plays a key role in shaping the vision for how AI will influence future product offerings. What you will do Guide engineers as they develop and integrate AI technologies into core platforms Oversee project planning and execution to ensure initiatives match company objectives Provide technical leadership and mentorship to help the team achieve strong results Work with stakeholders to define the technology roadmap and platform strategy

Join our dynamic team as an Office Services Workflow Coordinator at RR Donnelley, where you will play a crucial role in enhancing our office operations and workflows. This position is integral to maintaining efficient processes and ensuring that our office services run smoothly.

Join a pioneering team of ex-Google engineers who have successfully developed some of the most significant defensive platforms in the world, including Safe Browsing and reCAPTCHA. We are venturing into uncharted territory to combat a pressing challenge: effectively thwarting the rising tide of adversarial AI attacks that threaten organizations today.With a market potential exceeding $5B, we are poised for disruption. Conventional detection methods are lagging behind; adversaries are utilizing AI to devise sophisticated and evasive attacks, rendering outdated rules-based systems ineffective.Your Mission:You will architect a constellation of AI agents that are swift, cost-effective, and highly precise in their ability to detect and neutralize emerging threats. Your role involves creating the orchestration layer that enables a diverse array of agents to collaborate effectively in threat investigation. Additionally, you will be Aegis’ go-to expert for model selection, customization, and strategic implementation, leveraging your extensive hands-on experience in quantizing, pruning, distilling, serving, and orchestrating models on a large scale.Why This Challenge Is UniqueModels evolve at a rapid pace. What proved effective yesterday may become obsolete by tomorrow.Our adversaries are intelligent — and they are advancing. We are engaged in a real-time battle against AI-powered attackers who are crafting tailored, evasive payloads.There is no established playbook. As threats evolve, we are developing new detection paradigms at an accelerating pace. The stakes are high, and you will be actively involved from day one.If you thrive on challenging problems and value rapid feedback, this is the perfect opportunity for you.Why We Will SucceedThe market is vast — with over $5B in potential and fast growth — and industry incumbents are too sluggish to adapt.We have a proven track record. Our team has previously built core technologies behind Safe Browsing (over 5B users) and reCAPTCHA (protecting more than 5M websites) during our tenure at Google.This is our third venture into building a category-defining security business. We possess the expertise to scale both technology and our organization effectively.AI and security are integral to our identity. We incorporate these elements into our foundation from day one.We attract top talent. Most of our team members ranked in the top 1% of engineers at Google — if you excelled in your previous role, you will feel right at home here.

Kindly submit your CV in English and specify your English proficiency level.Mindrift connects talented specialists with project-based AI opportunities for leading technology firms, focusing on the testing, evaluation, and enhancement of AI systems. Note: Participation is project-based and does not constitute permanent employment.Project OverviewEach project presents unique challenges, where contributors might be involved in:Creating original computational engineering problems that mimic real-world engineering workflows;Formulating problems that necessitate Python programming for engineering calculations and simulations;Ensuring problems are computationally intensive, requiring numerical methods or iterative solutions;Developing challenges related to system design, optimization, and analysis;Grounding problems on practical research challenges or real-world engineering applications;Validating solutions using Python alongside standard engineering libraries;Clearly documenting problem statements and providing verified correct answers.Qualifications We SeekThis position is ideal for engineers experienced in Python who are open to part-time, non-permanent projects. Preferred qualifications include:A degree in Electrical Engineering or a related field;Proficiency in Python for numerical validation; knowledge of MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or any domain-specific libraries is also acceptable;At least 2 years of professional experience, whether in applied, research, or teaching contexts;A solid understanding of practical engineering constraints and approximations;Excellent written English skills (C1+);Professional certifications (e.g., CMME, SAS Certifications, CAP) and experience in international or applied projects are a plus.How the Process WorksApply → Pass qualifications → Join a project → Complete tasks → Get compensated.Project Time ExpectationsDuring active phases, tasks are estimated to require approximately 10–20 hours per week, depending on project demands. This estimate is not a guaranteed workload and applies only while the project is active.CompensationContributors can earn up to $69 per hour, contingent on their experience and contribution pace. Compensation varies by project based on its scope, complexity, and required expertise. Please note that other projects on the platform may offer different compensation levels according to their specific requirements.

basis-ai develops intelligent agents that support complex operations for major accounting firms. With a recent $100 million funding round and a valuation above $1 billion, the company is backed by investors such as Khosla Ventures, Accel, Google Ventures, and leaders in technology. The team’s mission centers on bringing reliable, production-ready AI to industries where accuracy and dependability are essential. As a Solutions Engineer on the Deployed Intelligence team, the work centers on helping customers integrate basis-ai’s products into their daily operations. This includes handling technical integrations, overseeing key system connections, and translating customer requirements for the engineering team. Daily collaboration with DI Strategists is a core part of the role. Location This position is based in person at the Flatiron office in New York City. Preferred Qualifications Minimum 4 years of experience in solutions engineering, technical implementation, or a similar customer-facing technical field Strong skills in SQL for data analysis and troubleshooting Practical experience with API integrations, ideally within financial services or enterprise SaaS Proven problem-solving skills and a customer-focused approach

Why Join Moonshot AI?Imagine a world where websites automatically optimize themselves to enhance sales, improve conversion rates, and accelerate growth. At Moonshot AI, we are transforming this vision into reality by integrating generative AI, extensive data processing pipelines, and systematic experimentation into a self-evolving digital ecosystem.As a well-funded startup in its early stages, we have a bold vision. Joining us means becoming more than just an employee; you will play a crucial role in shaping our technical and cultural foundation. If you desire the freedom of a founder, combined with the support of top-tier investors, this is the opportunity for you.Your ContributionsIn your role as our Senior Fullstack Engineer, you will be actively engaged across the technology stack. You will design, develop, and scale systems that power our AI-driven platform, enjoying significant autonomy, rapid execution, and substantial ownership of your work.Build and architect scalable systems — from backend APIs to frontend dashboards — capable of processing millions of web events daily.Create large-scale data infrastructure that elucidates website construction, performance metrics, and optimization strategies.Train and integrate LLMs into production environments to autonomously hypothesize, generate, and validate website variants.Influence engineering culture and practices — your impact will be evident throughout our tech stack, architecture, and team processes.Engage in experimentation, prototyping, and iteration — combining research, product development, AI, and scalability in a single role.This is not about maintaining another SaaS application; it’s about constructing an AI engine that revolutionizes digital product creation.Candidate ProfileA software artisan — you produce clean, scalable code and are adept at delivering results swiftly.5+ years of full-stack development experience (Python, JavaScript, AWS preferred, but not mandatory).Proven experience in leading teams or managing significant projects.Educational background in Computer Science, Electrical Engineering, Mathematics, or equivalent practical expertise.An AI enthusiast eager to work with LLMs and influence their real-world applications.Bonus Qualifications:Experience in a startup environment (thriving in dynamic, fast-paced settings).

Why Join Moonshot AI?Envision a web that autonomously transforms itself to enhance sales, improve conversions, and accelerate growth.At Moonshot AI, we’re pioneering this future by integrating generative AI, extensive data processing, and innovative experimentation into a self-adaptive online ecosystem.As a well-capitalized, early-stage startup with grand ambitions, your role here transcends that of a typical employee — you’ll actively contribute to shaping the company’s technical and cultural foundation. If you've ever aspired to have the freedom of a founder while being supported by elite investors, this opportunity is for you.What You'll Create & LeadIn the position of Staff Software Engineer, you will serve as the technical cornerstone of Moonshot's evolution engine, responsible for designing scalable systems, steering engineering strategy, and mentoring your colleagues.Your work will blend hands-on expertise with high-level architectural insight, transforming visionary ideas into technical realities.You will:Innovate at the forefront of generative AI - develop systems that empower AI to autonomously reason, experiment, and implement tangible changes to the web.Architect the next generation of our experimental engine - ensuring it is scalable, observable, fault-tolerant, and capable of handling millions of daily events.Design and advance our backend infrastructure utilizing Python (Flask-RestX), serverless AWS, and various data pipelines (ClickHouse, Postgres, Kinesis, Firehose, S3).Lead technical strategy - establish our engineering principles and evolve the architecture across microservices, data ingestion, and LLM-driven systems.Mentor and uplift - enhance the skills of senior and mid-level engineers through code reviews, collaborative programming, and detailed design documentation.Collaborate across teams - partner with AI, product management, and data science to translate business objectives into robust systems.Prototype and expand boundaries - rapidly bring concepts to production while balancing experimentation with thoroughness.Enhance performance, security, and reliability as we scale towards SOC 2 certification and enterprise clientele.This role emphasizes technical leadership without the responsibilities of people management: pure design, significant leverage, and complete ownership.

Join our dynamic team at StemXpert1 as a Media Workflow Support Technician. In this pivotal role, you will be responsible for ensuring seamless media workflows and providing technical support to our production teams. You will work closely with various departments to diagnose and resolve workflow issues, enhancing the efficiency of our media processes.The ideal candidate will have a passion for media technology, a keen eye for detail, and strong problem-solving skills. If you thrive in a fast-paced environment and are eager to contribute to innovative media solutions, we want to hear from you!

About Basis AIBasis AI empowers accountants with an innovative team of AI agents that streamline real-world workflows.Having successfully achieved product-market fit, we are experiencing overwhelming demand and have recently secured $34 million in funding to accelerate our growth.Founded in New York City, learn more about Basis AI here.About the TeamOur team is dedicated to creating product experiences where AI accountants work alongside humans, simplifying complex accounting processes to make them more intuitive and reliable.Leveraging LLMs, we are revolutionizing product functionality, requiring new architectural designs and innovative thought processes for human-AI collaboration. Just as mobile technology transformed UI design, AI is reshaping our development approaches.We adopt a first-principles approach, working in small, agile teams with rapid feedback cycles. Collaborating closely with accounting subject matter experts, designers, product managers, researchers, and platform engineers, we prioritize clean abstractions and maintainable code that is accessible for both humans and AI systems.About the RoleAs a Product Engineer at Basis AI, you will take full ownership of your projects from inception to completion. As the Responsible Party (RP), you will define problems, devise solutions, implement them, and assess their effectiveness.We trust you to self-manage, allowing you to establish your own objectives, schedule, and make both technical and product decisions. You will engage directly with users, understand their needs, and iterate until the product operates flawlessly.Your Responsibilities:Develop intelligent product experiences:Design and launch user-centric products that seamlessly integrate AI functionalities with robust workflows.Create dependable APIs, data structures, and frontend processes.Incorporate LLM features such as retrieval, reconciliation, and safety measures into our offerings.Write structured code that is easily interpretable by AI agents.