### Role Overview

We are seeking an experienced **Senior Full-Stack SaaS Engineer** to join our team, focusing on enhancing and supporting an established SaaS platform used by commodity trading companies. This platform plays a critical role in managing complex shipment operations, enabling customers to organize and classify shipping documents, extract structured data from unstructured files, and execute various shipment-related workflows efficiently. As part of our team, you'll contribute to a high-volume, business-critical application, working within a mature codebase, and collaborating with our engineering team in San Francisco.

#### Responsibilities

- Contribute to the ongoing development and enhancement of a production SaaS application.
- Build and improve frontend functionality using **React** and **TypeScript**.
- Develop and maintain backend services and logic, leveraging **TypeScript**.
- Work with **MySQL** databases, handling queries, schemas, and data models.
- Add new product features and refine existing shipment-management workflows.
- Handle document-heavy processes, including classification, data extraction, and structured record management.
- Investigate and resolve bugs, implementing reliable and maintainable solutions.
- Navigate and effectively contribute to a large, mature codebase.
- Enhance application performance, scalability, reliability, and code quality.
- Participate in code reviews and collaborate closely with internal engineering and product teams.
- Communicate technical risks, dependencies, and progress clearly and effectively.

#### Required Skills

- Strong professional experience with **React** for building production applications.
- Extensive experience in **TypeScript** across both frontend and backend development.
- Solid experience working with **MySQL** or similar relational databases.
- Proven track record of contributing to large-scale production codebases.
- Excellent debugging and problem-solving skills.
- Ability to understand and work within established architectural frameworks without unnecessary rewrites.
- Proficiency with **Git-based** development workflows and code reviews.
- Capability to work independently while integrating seamlessly with an existing engineering team.
- Strong product mindset with a keen attention to user and business impact.

#### Nice to Have

- Experience in building or maintaining **B2B SaaS** products.
- Familiarity with logistics, supply chain, shipping, trade operations, or document-management platforms.
- Experience with document classification, data extraction, **OCR**, or AI-assisted workflows.
- Understanding of workflow automation and business process software.
- Experience supporting applications with active enterprise customers and handling high data volumes.
- Familiarity with automated testing, **CI/CD**, cloud infrastructure, and production monitoring.
- Previous experience in a product-first startup or growth-stage software company.
