Senior Full-Stack Python Engineer (25% onsite)

Info-Matrix is seeking a Senior Full-Stack Python Engineer with extensive experience in systems driven by Optical Character Recognition (OCR) and Computer Vision. This hands-on software engineering role focuses on building and scaling production systems that process images, perform OCR, and deliver results via robust APIs and client-facing applications. Description of Duties

Backend & OCR Systems

• Design, implement, and maintain workflows for Optical Character Recognition (OCR) and image processing, covering everything from data ingestion to evaluation and output.
• Develop scalable backend services in Python using Fast API.
• Integrate with third-party OCR engines through REST APIs, managing retries, errors, and fallback strategies.
• Implement preprocessing techniques and quality improvement measures.
• Contribute to improving OCR accuracy by utilizing feedback from manual reviews and downstream validation processes.
• Design data models and storage solutions for OCR results, metadata, and audit trails using PostgreSQL.

Distributed & Cloud Architecture

• Build message-driven services using Azure Service Bus for asynchronous processing.
• Deploy and operate services on Azure, including AKS.
• Containerize applications using Podman and support CI/CD pipelines.
• Contribute to system scalability, fault tolerance, and observability.

Full-Stack Skills

• Develop and maintain React-based web applications for internal and client-facing tools.
• Implement responsive User Interface components using JavaScript / React.
• Collaborate closely with backend services to integrate OCR functionality into the UI.
• Understand and work with HTTP/HTTPS, authentication flows, and API contracts.

Engineering Leadership

• Expert in Object Oriented Programming (OOP) applying abstraction, encapsulation, inheritance, and polymorphism to design scalable, reusable and loosely coupled systems aligned with SOLID (Single-responsibility, Open-closed, Liskov Substitution, Interface Segregation, Dependency Inversion) principles and guiding the team through code reviews and design standards.
• Participate in architectural decisions and technical design reviews.
• Mentor junior engineers and help raise overall engineering standards.
• Fully document all created work associated with this position, including technical and functional designs and diagrams, test plans, test scripts, impact analysis reports, lessons learned, best practices for others to follow, plus any other documentation as required by the client. This documentation shall follow the format and / or templates as instructed by the client.
• Develop and maintain productive relationships with technology staff, business owners, project sponsors, vendors, and key clients.
• Lead and participate in project team activities for system work efforts related to enterprise systems.
• Work independently to accomplish the tasks and duties assigned.
• Adhere to and follow all client standards, policies, and procedures.
• Utilize various software and/or technology tools to perform job duties.
• Perform tasks and other duties as related to this position and role and assigned by the client.

Do you have experience in Web applications?, The ideal candidate will have a strong Python background and the ability to develop backend services from start to finish, while also contributing to the frontend when necessary. This position lies at the intersection of backend systems, computer vision and OCR pipelines, distributed services, and modern frontend delivery. * Python: an expert level in Python with 8+ years' experience implementing and supporting production systems.

• FastAPI: 5+ years' experience with FastAPI or equivalent Python API frameworks.
• OCR / Computer Vision: 5+ years of experience working with OCR and computer vision technologies, with a strong understanding of domain-specific applications.
• PostgreSQL / SQL: Proficiency in schema design, query writing, and performance optimization.
• JavaScript + React, HTML/CSS: Proven experience in production-level frontend development.
• Azure cloud, Azure Service Bus: Knowledge of Azure cloud services or equivalent messaging systems.
• AKS / Kubernetes: Hands-on experience with container orchestration using AKS or Kubernetes.
• Linux environments: Strong understanding and practical experience working in Linux environments.
• Proficiency in REST API design and integration.
• Experience with JSON-based data exchange.
• Expertise in containerized development and deployment workflows.
• Knowledge of secure API design and operational best practices.

Additional Desired Skills

• Experience with AI/ML pipelines related to OCR or image processing.
• Exposure to vector databases (e.g., Qdrant) and embedding-based similarity search.
• Familiarity with PyTorch / ONNX for learned image enhancement or embeddings.
• Knowledge of vehicle fingerprinting, multi-view embeddings, or related CV problems.
• Security best practices around PII handling, image storage, and access control.

Pulled from the full job description

• AD&D insurance
• Health insurance
• 401(k) matching
• Paid time off
• Vision insurance
• Dental insurance
• Life insurance, Experience a workplace where people are the X-Factor! At Info-Matrix, we believe our greatest strength is our team-a diverse group of passionate professionals united by a drive to solve real-world business challenges through innovative technology solutions. Our culture is built on integrity, teamwork, and a commitment to excellence, fostering an environment where every voice is valued and every contribution matters!, Health & Wellness: Customized Medical, Dental, and Vision Plans
• Paid Time Off: Generous PTO & 11 paid holidays
• Info-Matrix Paid Coverage: Short-term and long-term disability, life insurance, and AD&D insurance.
• Retirement Savings Offering: 401(k) plan with company match

Info-Matrix Corporation is a full-service professional IT provider located in Mechanicsburg, Pennsylvania. We are a privately held, small diverse business that has been providing Pennsylvania state and local government with innovative IT solutions and staffing services for more than 28 years. As a local employer of IT professionals, Info-Matrix Corporation has proven expertise in all facets of information technology.