Freelance Full Stack Developer Jobs in Oxnard, CA

Hygiena provides rapid microbiology diagnostic tests and solutions for mission-critical, time-sensitive processes around the world. Hygiena’s proprietary diagnostic technologies enable customers to; prevent illness and save lives, comply with regulations, protect products and brands, run businesses more effectively. Solutions are sold in a wide range of industries globally, but the core focus is food safety. Headquartered in Camarillo, California and with offices around the world, we are actively looking for talented individuals to help grow the business!

• In providing the highest quality products & service
• Being a leader in innovation
• Having a compelling desire to improve and win in the marketplace
• In contributing positively not only in the workplace, but in our community and environment!

With rapid growth comes opportunity. We are looking for a Full Stack Developer to join our team onsite in Mississauga, Ontario office! This is a full-time, exempt position.

In this role, you will design, build, and operate features across SureTrend®, Hygiena’s multi-tenant food safety and quality management SaaS platform. The platform supports web application users as well as laboratory and production-floor instruments (including PCR analysis devices) that securely transmit mission-critical test data. You will work across modern front-end frameworks, .NET and Python back-end services, and relational data layers—carrying features from architectural design through testing, deployment, and cloud operations.

• Full-Stack Application Development (30%): Design, build, and maintain scalable features across the SureTrend stack using ASP.NET Coreon the back end, paired withAngular (TypeScript) and Nuxt / Vue.js on the front end.
• Data Layer & Performance Tuning (20%): Architect and optimize the relational database layer, including schema and index design, query and execution-plan tuning, data migrations, and high-throughput data processing workflows for web and instrument-generated data.
• Telemetry, Observability & Production Support (15%): Instrument cloud services with Azure Application Insights, monitor and diagnose production issues using KQL (or comparable telemetry stacks), and take ownership of service reliability.
• Technical Design & CI/CD Quality (15%): Author technical designs, participate in rigorous code reviews, build comprehensive automated test suites, and strengthen CI/CD pipelines in Azure DevOps.
• Containerized Microservices (10%): Build and maintain Python microservices deployed on Kubernetes (Docker), ensuring secure service-to-service integration and high availability.
• Agile Collaboration (10%): Partner with Product, UX, and QA teams to refine technical specifications and deliver iterative value in an Agile framework.
• Compliance & Safety (As required): Maintain compliance with all organizational policies, data security mandates, and safety programs.

• Education: Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).
• Back-End Proficiency: Strong hands-on experience building robust, high-performance web services and APIs using ASP.NET Core / .NET.
• Front-End Proficiency: Proven experience developing responsive single-page web applications using Angular (TypeScript) and/or Nuxt / Vue.js.
• Database & Data Layer:Solid foundation in relational databases (SQL design, schema migrations, execution plan analysis, and performance indexing).
• Engineering Best Practices: Dedication to writing clean, maintainable code with unit/integration tests, participating in code reviews, and collaborating via Azure DevOps (or Git-based CI/CD).

• Multi-Tenant SaaS: Experience architecting multi-tenant SaaS platforms with strict data isolation, high scalability, and robust security.
• Concurrency & Messaging: Experience with high-throughput systems, message queuing, batching, idempotency, backpressure handling, or database contention mitigation.
• Cloud & Observability: Practical experience with Microsoft Azure, Azure Application Insights, and KQL (or tools like OpenTelemetry, Datadog, Grafana).
• Containers & Microservices: Hands-on experience developing Python services running in Dockercontainers on Kubernetes.
• Infrastructure as Code (IaC): Familiarity with Bicep, ARM templates, or Terraform.
• Instrument & IoT Integration: Experience handling data from connected laboratory/physical devices, including considerations for intermittent connectivity, retry policies, payload buffering, and data serialization

• Comfortable with interacting and working with all levels of customers, both internal and external; good interpersonal skills, team motivation and outgoing personality
• Excellent adaptability in a fast-paced environment with the flexibility and willingness to take on new tasks and projects
• Ability to speak and write clearly and accurately
• Attention to detail and accuracy
• Multi-tasking capabilities
• Must have in-depth analytical and problem-solving skills.
• Must be able to use discretion and independent judgement.

• Teamwork as a Core Value: Strong cross-functional collaboration and supportive team culture.
• Be a Part of Something Big: Play a critical role in preventing global health crises like foodborne illnesses and healthcare-associated infections.
• Giving Back: Active community outreach supporting local youth and children’s organizations.

We are an equal opportunity employer and value diversity. All employment is decided on the basis of qualifications, merit and business need. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.