Machine Learning / Data Science Engineer

About CoinflowCoinflow is an innovative payments company based in Chicago, transforming the way money is transacted globally. We empower merchants and marketplaces to accept various payment methods across over 170 countries, ensuring instant settlements, leveraging AI for fraud prevention, and providing blockchain-based proof of delivery.With backing from top investors like Pantera Capital, CMT Digital, Coinbase Ventures, Jump Capital, and Reciprocal Ventures, Coinflow has recently secured $25M in Series A funding, propelling our mission to revolutionize cross-border payments.Since our inception in 2024, we have experienced remarkable growth, achieving a 23x increase in revenue and reaching a multi-billion-dollar annual transaction volume run rate!Role Overview:We are looking for a passionate Machine Learning Engineer to join our team, responsible for developing the intelligence layer that drives our platform. As our first dedicated ML hire, you will have the unique opportunity to shape how data and machine learning practices are integrated throughout Coinflow. You will analyze extensive transaction and behavioral data, create models and analytical systems, establish success metrics, and incorporate intelligence directly into our products and internal tools.The ideal candidate thrives on curiosity, is eager to experiment, and is driven to build innovative solutions that are yet to exist.Key Responsibilities:Design and refine machine learning models and analytical systems that enhance platform decision-making and product intelligence.Establish foundational practices for data and machine learning across the organization.Define, manage, and evolve key performance metrics related to platform health, performance, and risk.Investigate transaction and behavioral data to identify patterns, signals, and valuable insights.Collaborate closely with Engineering, Product, and Operations teams to transform open-ended challenges into concrete systems.Develop methodologies for evaluating, enhancing, and ensuring the reliability of models and data systems over time.Create internal workflows and tools that support operational and product teams.Contribute to shaping Coinflow’s long-term data and machine learning strategy.

About CoinflowCoinflow is revolutionizing the payments landscape from our headquarters in Chicago. We are at the forefront of enabling merchants and marketplaces to seamlessly accept a wide range of payment methods across over 170 countries, ensuring instant settlements, AI-powered fraud protection, and blockchain-based proof-of-delivery.With support from prominent investors such as Pantera Capital, CMT Digital, Coinbase Ventures, Jump Capital, and Reciprocal Ventures, Coinflow successfully completed a $25M Series A funding round aimed at accelerating our efforts to transform cross-border payments.Since our seed funding in 2024, we've experienced an impressive 23x revenue growth, achieving a multi-billion-dollar annual transaction volume run rate!We are in search of a Forward Deployed Engineer (FDE)—a unique position melding software engineering expertise with customer-facing problem-solving skills.In this dynamic role, you will take your technical acumen beyond the office, collaborating directly with customer engineering teams to design and implement integrations, troubleshoot issues in real-time, and ensure successful deployments. Your contributions will extend beyond coding for Coinflow’s core product; you will leverage your technical skills, systems understanding, and product insight to empower our customers in utilizing our platform effectively.This position is ideal for engineers who enjoy building while also seeking to expand their influence: engaging more with customers, shaping solutions, and tackling significant technical challenges in live environments.Solution Design & DeploymentCollaborate closely with customer engineering teams to design, prototype, and implement integrationsDevelop proof-of-concepts and code snippets to facilitate quicker adoptionProvide guidance on tradeoffs, system design, and best practices for scaling payment infrastructureCustomer Onboarding & Go-LiveLead technical onboarding from contract signing to production launchTroubleshoot live integration issues across APIs, SDKs, and payment workflowsEnsure that all deployments are smooth, stable, and optimized for future growthOptimization & ExpansionExamine transaction and integration data to pinpoint bottlenecks and opportunities for improvement

About CoinflowCoinflow, a trailblazer in the payments industry, is based in Chicago and is at the forefront of transforming global financial transactions. We empower merchants and marketplaces to accept a variety of payment methods across more than 170 countries, offering instant settlements, AI-driven fraud prevention, and blockchain-based proof-of-delivery.Having secured backing from prominent investors such as Pantera Capital, CMT Digital, Coinbase Ventures, Jump Capital, and Reciprocal Ventures, Coinflow has recently completed a $25M Series A funding round to propel our mission of modernizing cross-border payments.Since our initial funding in 2024, we have experienced tremendous growth, achieving a remarkable 23x increase in revenue and reaching a multi-billion-dollar annual transaction volume run rate!About The RoleWe are on the hunt for a Senior Software Engineer who will play a pivotal role in constructing the core infrastructure that underpins our global payment systems. In this role, you will design and implement systems that manage billions in transactions while collaborating with Product teams to define our offerings, partnering with fellow engineers to refine our methodologies, and taking significant ownership of the systems you develop.What You'll DoBuild Core Payment InfrastructureDesign and implement high-throughput payment processing systems that meet stringent reliability standards.Create APIs and SDKs that facilitate merchant integration with Coinflow.Develop advanced fraud detection and risk management features leveraging real-time data analytics.Scale Our PlatformArchitect systems to ensure performance, reliability, and observability as we scale.Enhance database queries, caching strategies, and service communication for optimal performance.Implement monitoring, alerting, and debugging tools for production systems.Ship Product FeaturesManage end-to-end feature development from technical design to deployment.

About CoinflowCoinflow is an innovative payments company based in Chicago, leading the transformation of global monetary transactions. We empower merchants and marketplaces to accept a wide range of payment methods across over 170 countries, featuring instant settlements, AI-based fraud prevention, and blockchain technology for proof of delivery.Supported by prominent investors such as Pantera Capital, CMT Digital, Coinbase Ventures, Jump Capital, and Reciprocal Ventures, Coinflow has successfully raised a $25 million Series A funding to accelerate our mission to revolutionize cross-border payments.Since our inception in 2024, we have experienced an impressive 23-fold increase in revenue and are on track for a multi-billion-dollar annual transaction volume!About the RoleWe are in search of a Senior Accountant who is passionate about establishing Coinflow's accounting framework from scratch. This is a hands-on position ideal for individuals who excel in dynamic environments and are eager to design the processes, policies, and controls that will evolve alongside our growth. As our first dedicated accounting professional, you will have significant influence over our financial setup, audit preparations, and the development of the infrastructure necessary to support Coinflow’s rapid expansion.While prior startup experience is not mandatory, candidates must thrive in uncertainty, be adept at making decisions independently, and possess a genuine enthusiasm for the cryptocurrency and digital payments landscape. You will collaborate closely with Finance leadership and engage with various teams across the organization.What You'll DoAccounting Foundation & Process DesignLead the development and management of Coinflow's core accounting processes, including month-end closure, reconciliations, and general ledger oversight.Create accounting policies and documentation that align with best practices and prepare the company for future audits.Assess, select, and integrate accounting systems and tools that will serve as Coinflow's financial backbone, including decisions on ERP, expense management, and closing tools as we grow.Controls & Audit ReadinessEstablish and implement internal controls across key financial processes.Prepare the organization for its inaugural external audit, covering documentation, schedules, and coordination with auditors.

About CoinflowCoinflow is an innovative payments company based in Chicago, revolutionizing the landscape of global financial transactions. We empower merchants and marketplaces to accept diverse payment methods in over 170 countries, featuring instant settlement, advanced AI-driven fraud prevention, and blockchain-based proof-of-delivery.Supported by prominent investors such as Pantera Capital, CMT Digital, Coinbase Ventures, Jump Capital, and Reciprocal Ventures, Coinflow has recently secured a $25 million Series A funding to expedite our mission of modernizing cross-border payments.Since our seed round in 2024, we have experienced an astonishing 23x revenue growth and achieved a run rate of multi-billion-dollar annual transaction volume!Role Overview:We are on the lookout for a passionate and results-oriented Business Development Manager to lead initiatives focused on cultivating strategic partnerships that foster sales conversations and drive revenue growth. The ideal candidate will be instrumental in identifying, securing, and managing partnerships that align with Coinflow’s strategic goals while overseeing deals from inception to closure. This position offers a base salary plus variable compensation, with commissions linked to newly closed opportunities.Key Responsibilities:Guide the complete sales cycle by developing and leveraging strategic partnerships within the fintech sector, traditional banking, and cryptocurrency institutions, from initial outreach to deal closure.Create new revenue streams by nurturing robust relationships with key stakeholders across fintech, banking, and crypto ecosystems.Design and implement partner-centric sales strategies that connect traditional finance with Web3, crafting innovative payment solutions and opportunities for mutual growth.Manage the entire sales process through multi-ecosystem partnerships, including pipeline development, deal structuring, and revenue optimization across fintech, banking, and crypto channels.Monitor industry trends and competitor activities to uncover new partnership and sales opportunities in the fintech, banking, and crypto sectors.Develop and execute go-to-market strategies with partners to expedite deal closure and revenue enhancement.Establish and maintain scalable processes for managing multiple partnership channels and sales pipelines effectively.

About CoinflowCoinflow is an innovative payments company based in Chicago, revolutionizing global money movement. We empower merchants and marketplaces to accept diverse payment methods across 170+ countries, offering instant settlements, state-of-the-art AI-fraud prevention, and blockchain-backed proof of delivery.With the support of prominent investors like Pantera Capital, CMT Digital, Coinbase Ventures, Jump Capital, and Reciprocal Ventures, Coinflow has successfully raised $25 million in Series A funding to accelerate our mission of modernizing cross-border payments.Since our initial funding round in 2024, we have achieved remarkable growth, boasting 23x revenue increases and scaling to a multi-billion-dollar annual transaction volume run rate.The RoleAs a Senior Merchant Underwriter, you will play a vital role in analyzing merchant applications. Your responsibilities will include reviewing licenses, legal documents, transaction histories, and assessing credit risks. You will have the authority to make independent decisions on standard merchant applications and serve as a key advisor for high-risk sectors, such as Crypto, Real Money Gaming, and Remittance. For complex evaluations, you will determine the best underwriting strategy and present formal recommendations—whether for approval, conditional approval, or decline—to risk and executive leadership.What You'll DoNew Business Underwriting: Assess merchant applications to ensure compliance with legal standards, Card Scheme Rules, and Coinflow’s risk appetite. Conduct credit evaluations to confirm financial stability and the capacity to manage potential chargeback liabilities.Backbook & Portfolio Reviews: Perform routine reviews of the existing merchant portfolio, including updated licenses, legal opinions, and financial statements, ensuring ongoing compliance and managing any changes to risk profiles.Alert Investigation: Investigate anomalies such as chargeback spikes, ACH returns, or other risk indicators affecting merchant profiles.Process & Efficiency Projects: Lead initiatives to enhance processes or tools that improve efficiency and scalability of our Underwriting program.Regulatory & Scheme Adaptation: Spearhead efforts to update internal policies and processes in alignment with evolving card partner/scheme requirements and legal regulations.

About CoinflowCoinflow is a pioneering payment service provider transforming the global financial landscape with innovative solutions such as stablecoins, AI-driven fraud prevention, and instant settlement capabilities. Our mission is to enable businesses to accelerate their growth through seamless payment processes, fraud and chargeback protection, global payment acceptance, multi-currency foreign exchange, and consolidated payouts. Established in 2023, Coinflow caters to a diverse clientele including marketplaces, fintech companies, remittance services, gaming platforms, and e-commerce merchants across the globe.Since securing our seed round in 2024, we have experienced an impressive 23-fold increase in revenue, achieving multi-billion-dollar annual transaction volumes. Our recent announcement of a $25M Series A funding in October 2025—backed by prominent investors such as Pantera Capital, CMT Digital, Coinbase Ventures, Jump Crypto, and Reciprocal Ventures—positions us to further our goal of empowering the world’s fastest-growing businesses with innovative and trustworthy global payment solutions.Proudly headquartered in Chicago, IL, we invite you to learn more about us at coinflow.cash.Role Overview:We are seeking a Corporate Counsel to join our dynamic legal team as our second legal hire. This is an extraordinary opportunity to help establish and shape the legal function within a rapidly growing fintech company. You will collaborate closely with the Head of Legal on a variety of legal matters, primarily focusing on commercial contracts. Additionally, you will play a vital role in developing the processes, playbooks, and legal infrastructure that will guide our operations as Coinflow continues to scale.This role is perfectly suited for an individual who thrives in a startup environment, demonstrating flexibility, responsiveness, and a willingness to navigate uncertainty. We are looking for a candidate who embodies the qualities of a pragmatic lawyer, a meticulous organizer, and an enthusiastic builder.What You’ll DoDraft, review, and negotiate various commercial agreements, including merchant agreements, partner and vendor contracts, and non-disclosure agreements (NDAs).Develop and maintain contract templates, fallback positions, and a scalable contract management process.Act as a trusted legal advisor to sales and other business stakeholders.Collaborate with the Head of Legal to design, select, and implement legal team workflows and processes.

Role overview The Applied AI Lead at coinflow plays a central role in shaping and launching AI-driven features for the platform. Based in Chicago, this position blends technical leadership with strategic planning. The Applied AI Lead works closely with both data scientists and engineers, guiding their efforts while remaining involved in day-to-day technical work. What you will do Direct the development and rollout of machine learning models for the platform Align AI projects with coinflow’s business priorities and measure their impact Lead and support a multidisciplinary team, providing clear direction and mentorship

Join IMC as a Machine Learning Engineer, where you will be instrumental in developing and deploying advanced machine learning models that enhance our global trading operations. Collaborate with top-tier researchers, hardware specialists, and software engineers to create innovative solutions that leverage GPU acceleration, distributed computing, and cutting-edge open-source technologies. Your contributions will significantly impact our trading strategies by streamlining experimentation cycles, fostering a culture of continuous improvement and innovation. This is a rare opportunity to tackle challenges at the convergence of machine learning and trading, allowing you to leave a lasting mark on the future of IMC's technology and trading prowess.

Join us at imc as we push the boundaries of technology by deploying machine learning directly onto custom hardware. This is an exceptional opportunity for you to build innovative solutions from the ground up, influence our technical research direction, and witness your contributions make a significant impact in one of the world's most demanding computing environments.At imc, we develop our own hardware, software, and infrastructure, which empowers you to tackle bottlenecks directly without waiting on vendors or dealing with restrictive abstraction layers. If you are eager to explore the limits of computational possibilities, we invite you to apply. We are looking for both researchers and seasoned engineers from diverse backgrounds. Prior trading experience is advantageous but not necessary.

Join Inspire11 as a Machine Learning Engineering ConsultantAt Inspire11, we pride ourselves on being a team of curious, intelligent, and resourceful individuals committed to delivering exceptional quality. We foster a collaborative environment that encourages innovation and accountability. Our success is tightly aligned with the success of our clients, as we partner to simplify complexities, solve sustainable challenges, and continuously elevate our thinking. Value creation is not just a concept for us; it is an integral part of our daily operations.If you are ready to make a transformative impact and thrive in a space that values bold ideas and unique perspectives, Inspire11 is the place for you.

Make a Meaningful ImpactAs an Applied Machine Learning Engineer at Strata, you will be at the forefront of innovation, collaborating with architects, data scientists, AI developers, platform engineers, and product teams to integrate cutting-edge AI and ML capabilities into our healthcare platform. Your contributions will be pivotal in driving advancements in generative AI and beyond, as you employ a diverse array of machine learning techniques to tackle complex healthcare challenges. By developing next-generation AI agents, algorithms, and computational engines, you will play a crucial role in enhancing Strata's market leadership, streamlining operational efficiency, and empowering healthcare providers to deliver top-notch care while ensuring financial sustainability.A Day in Your RoleTransform the latest research (e.g., arXiv papers) into practical, production-ready solutions using Python.Prototype and refine machine learning models, focusing on regression, causal inference, optimization, and vector embeddings.Work collaboratively with cross-functional teams to seamlessly embed ML and AI functionalities into our software platform.Teaming up with data scientists, you will design experiments and apply statistical methods to analyze real-world data.Optimize, test, and scale ML models to support essential healthcare analytics.Our Technology EcosystemOur core platform serves over half of the nation's leading healthcare providers, enabling them to harness financial, operational, and clinical data effectively. Our AI and ML technology stack encompasses:Programming Languages & Libraries: Python, PyTorch, NumPy, Pandas, Polars, PyMCInfrastructure: AWS, Snowflake, Docker, GitHubTechniques & Tools:Regression (both Bayesian and non-Bayesian)Vector embeddings, similarity analysis, clustering techniquesCore statistics and distributions for exploratory data analysis (EDA)Optimization strategies (multi-armed bandit, mixed integer programming)Causal inference and probabilistic modeling

As a Lead Machine Learning and Data Science Engineer at CapTech, you will spearhead the design and implementation of innovative, data-driven solutions for our clients, focusing on the development and deployment of scalable machine learning systems within enterprise frameworks. Our collaborative environment fosters continuous learning and knowledge sharing with fellow analysts, architects, and clients.Key Responsibilities:Collaborate with clients, data scientists, engineers, and cross-functional teams to devise end-to-end machine learning solutions that address evolving business needs.Provide technical guidance and ensure alignment of technical solutions with client requirements.Translate client requirements into actionable data-driven processes and analytical models.Examine and transform extensive datasets hosted on leading enterprise data platforms such as AWS, Azure, and GCP.Develop and deploy cutting-edge analytical solutions leveraging client-specific data, including recommender systems and natural language processing.Optimize and productionize machine learning systems to meet client expectations for performance and scalability.Enhance CapTech’s Machine Learning and Data Science practices by delivering engaging presentations, crafting proposals, participating in business development initiatives, and mentoring junior data scientists and engineers.

Role Overview ServiceNow is hiring a Principal Machine Learning Engineer focused on VoIP Infrastructure in Chicago. This position centers on building and improving systems that support reliable, high-quality voice over IP services. What You Will Do Develop and refine machine learning models to enhance VoIP system performance and reliability Design algorithms that address challenges in voice communication technology Work closely with teams across disciplines to deliver robust solutions for communication infrastructure Collaboration This role involves regular collaboration with cross-functional groups to shape the future of ServiceNow's communication technology.

Join coinflow as an Operations Support Analyst, where you will be at the forefront of enhancing our operational processes. In this role, you will analyze and streamline workflows, ensuring our team operates efficiently and effectively. Your keen analytical skills will help identify opportunities for improvement, making a significant impact on our daily operations.

As a Partner Success Manager at coinflow, you will play a crucial role in fostering strong relationships with our partners. Your primary responsibility will be to ensure partner satisfaction and drive success through effective communication and strategic support. You will collaborate closely with various teams to enhance partner engagement and optimize their experience with our products and services.Your expertise will contribute to developing initiatives that promote partner growth and retention, and you will be the go-to resource for addressing any issues or inquiries they may have. Join us in making a significant impact in the fintech industry!

Join IMC Trading, a leading global market maker, as a Machine Learning Researcher! Our central ML research team is dedicated to applying cutting-edge machine learning and deep learning techniques to tackle complex trading challenges. We are looking for talented quantitative researchers with a solid track record who can collaborate effectively with trading teams to develop, refine, and enhance predictive models and research tools. You will have the chance to engage deeply in feature engineering and alpha research while utilizing a diverse array of ML models and conducting innovative research on custom model development.

Join our dynamic team at Arrive Logistics as a Senior Machine Learning Operations Engineer, where you will play a pivotal role in optimizing our machine learning processes and enhancing operational efficiency. You will be responsible for deploying machine learning models into production, monitoring their performance, and collaborating with data scientists to ensure seamless integration with our existing systems.Your expertise in cloud computing and machine learning frameworks will be crucial in driving innovation and improving our logistics solutions. If you're passionate about leveraging technology to solve real-world problems and thrive in a fast-paced environment, we want to hear from you!

Upwork Inc. connects businesses with skilled professionals in AI, machine learning, software development, sales, marketing, customer support, finance, and accounting. The company’s platforms, including the Upwork Marketplace and Lifted, help organizations of all sizes find and manage freelance, fractional, and payrolled talent for a range of contingent work needs. Upwork supports both large enterprises and entrepreneurs in sourcing talent and implementing AI-driven solutions. The company’s network covers more than 10,000 skills, enabling clients to scale and adapt their workforce for changing business demands. Since launch, Upwork has processed over $30 billion in transactions. The company’s mission centers on expanding opportunities at every stage of work. Learn more Visit the Upwork Marketplace: upwork.com Learn about Lifted: go-lifted.com Connect on LinkedIn, Facebook, Instagram, TikTok, and X Follow Lifted on LinkedIn