Senior Clojure Backend Engineer

OTR Solutions is an innovator in the transportation industry providing a suite of factoring, fuel, and business management focused solutions. We help new and established companies get fast access to the funds they need for daily operations. As a Private Equity backed FinTech company, we are looking to grow our best-in-class financial organization.

We are seeking a Senior Clojure Backend Engineer to help design, build, and scale our AI-powered SaaS platform focused on document intelligence, automation, and data extraction for the freight and financial services industries. Recently acquired by OTR Solutions, this role will play a critical part in scaling platform infrastructure, advancing AI capabilities, and supporting long-term product innovation.

This role is ideal for a senior platform engineer who enjoys solving complex technical challenges, building scalable distributed systems, and contributing to architecture decisions in a fast-moving, high-growth environment.

• →Design, develop, and maintain core backend services using Clojure
• →Build and scale REST and GraphQL APIs that power AI-driven automation workflows
• →Architect production systems supporting high-volume document ingestion and structured data extraction
• →Integrate AI and machine learning services into production workflows, including LLMs, OCR, embedding pipelines, and vector search
• →Collaborate with ML engineers to productionize AI models and workflows
• →Design and optimize database schemas and queries using Datomic and/or PostgreSQL
• →Improve platform reliability, observability, and scalability across cloud infrastructure
• →Support DevOps and Infrastructure-as-Code initiatives
• →Utilize AI-assisted development tools to improve development speed, testing, and code quality
• →Participate in architectural decisions as the platform scales post-acquisition

• Senior-level platform or backend engineering experience required
• Strong professional experience developing applications in Clojure
• Experience with Datomic and/or PostgreSQL
• REST and/or GraphQL API design experience
• Experience with Elasticsearch or similar search technologies
• Production experience on AWS, including services such as Lambda, API Gateway, EKS, EC2, Textract, DynamoDB, CloudWatch, CloudFront, Cognito, SES, and Route 53
• Experience building and scaling distributed, cloud-native systems
• Experience integrating AI/ML services into production systems
• Familiarity with LLM APIs (OpenAI, Anthropic, AWS Bedrock, etc.)
• Experience with vector databases, embedding search, and OCR pipelines
• Experience using Python for AI/ML integration (preferred)
• Experience with TypeScript and React (preferred)
• Experience with Infrastructure-as-Code tools such as Terraform (preferred)
• Experience in fintech, logistics technology, or document automation is highly preferred