Integration Engineer (Full-Stack) with Machine Learning Focus

OneRail is seeking a dedicated Integration Engineer whose primary focus will be integrating machine learning models into our flagship product. You’ll bridge the gap between data science and production software—implementing, deploying, and maintaining ML-powered features while contributing to back-end services and React-based front-end components. Your work will enable seamless, scalable AI capabilities for end users.

Key Responsibilities

• Work with ML pipeline engineers to deploy and maintain ML models (e.g., PyTorch, scikit-learn) as robust service endpoints.
• Collaborate with data scientists and product to productionize prototypes, and extend the product to enable ML and AI features.
• Define and evolve RESTful APIs with OpenAPI/Swagger—ensuring they support low-latency, high-throughput ML inference.
• Version, document, and maintain API contracts for internal and external consumers.
• Build microservices (Python—FastAPI/Flask—or Node.js) that encapsulate ML logic, data pre/post-processing, and business rules.
• Optimize service performance, scalability, and reliability (caching, async processing, batching).
• Implement and modify React components and pages to expose ML-driven functionality
• Ensure seamless data flow from back end to front end, handling streaming or polling as needed.
• Containerize ML services (Docker) and orchestrate deployments
• Work closely with cross-functional teams (data science, product, QA) to translate ML requirements into production features.
• Champion code quality, API versioning strategies, and thorough documentation.

Required Qualifications

• 3+ years of professional full-stack development, with a clear track record of integrating ML into production systems.
• Hands-on experience serving models in production (model serialization, serving frameworks, inference optimizations).
• Strong TypeScript and Python proficiency
• Experience with microservices architecture, message brokers (Kafka wtc), and async frameworks
• Solid React knowledge (hooks, context, state management);
• Deep understanding of REST principles, OpenAPI/Swagger, and API versioning/Backward-compatibility.
• Docker and orchestration experience.
• CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI) and automated testing (unit, integration, e2e).
• Strong communicator, able to translate technical concepts for non-technical stakeholders.
• Excellent problem solver with an eye for scalable system design.

About OneRail

OneRail, headquartered in Orlando, FL, is the emerging leader in Final Mile delivery technology. Our OmniPoint SaaS platform uses proprietary algorithms and artificial intelligence to power efficient same-day delivery programs for major companies like Lowe’s, Pepsi, American Tire Distributors, and Advance Auto Parts.

OmniPoint is the cornerstone of OneRail’s integrated final mile delivery solution.

• Capture . Within moments of a purchase that requires same-day delivery, OmniPoint captures a shipper’s “demand signal” from their POS, ERP, or e-commerce system: what was ordered, where it is, where it’s going, and when it needs to be there.


• Optimize . OmniPoint uses this data to specify the optimal vehicle for the order’s size and weight, as well as any extra services required. OmniPoint then calculates all-in shipping costs and optimizes delivery routing.


• Execute . Customers can direct deliveries to their fleet, or OneRail’s nationwide network of 12 million couriers available 24/7/365.


• Support . Deliveries can be supported as they occur by OneRail’s skilled Exceptions Assist team to handle unforeseen delivery issues on the customer’s behalf.


• Follow Up . OmniPoint enables the consumer or receiving business to track their order delivery in real time and provide feedback through a customer-branded interface.

OneRail has been recognized by Gartner as one of the most innovative solutions in the Final Mile delivery space. We ranked in the top 100 of the Inc. 5000 list of the fastest-growing US private companies in 2022 and 2023 and received an Inc. Best Workplace award in 2023.

Regular, Full-time Team Member Benefits

• Competitive base compensation



• Health and wellness Insurance with generous company contribution (medical, dental, vision)



• Company-paid life insurance, short-term and long-term disability



• 4% 401K match with immediate vesting of Company match



• Continuing Education Opportunities



• Flexible/Open (Uncapped) Paid Time Off (PTO) Policy for Salaried Team Members*



• Competitive Paid Time Off (PTO) Policy for Hourly Team Members*



• Generous Company-paid Holidays

Onsite Team Member Job Perks

• Relaxed/casual work environment



• Standing desks



• Recreational and Video games



• Large breakroom and lounge



• Stocked kitchen and fridges



• Cappuccino machine



• Onsite restaurant and daily food trucks



• Offices conveniently located with quick access to I-4, SR-528, and Florida's Turnpike



• Ample free parking

OneRail's Travel Policy for Remote Team Members

While OneRail allows remote work for certain posted roles, noted as "Remote Work Available" on the Company's website, a core requisite for all roles is that team members be willing and able to occasionally travel to OneRail's Orlando, Florida headquarters. All team members are required to participate in on-site onboarding at the onset of employment and then on an as-needed basis thereafter, as a condition of their employment.

To view more details about what is like to work at OneRail, or to view a full list of career opportunities, please visit