Senior Full-Stack Engineer

Golden Flash
Remote · United States · Full-time

About Golden Flash

Golden Flash is looking for a Senior Full-Stack Engineer to join our engineering team and help build, improve, and scale our operational technology platform.

This is a hands-on role for an experienced engineer who enjoys working across the frontend, backend, databases, integrations, and cloud infrastructure. You’ll have significant ownership over features and technical improvements and will work closely with technical leadership to deliver reliable, maintainable software.

We’re looking for someone who can take ownership of complex problems, investigate issues independently, and turn business requirements into production-ready solutions.

What You'll Do

• Build and maintain full-stack features across frontend applications, backend services, and APIs.
• Design and improve data-ingestion workflows involving APIs, SFTP, object storage, and file uploads.
• Develop data validation, normalization, transformation, and error-handling workflows.
• Build and maintain background jobs, scheduled tasks, and automated processing pipelines.
• Design reliable workflows with appropriate handling for retries, duplicate processing, time zones, and business calendars.
• Write, optimize, and maintain SQL queries and PostgreSQL databases.
• Design and implement database migrations while protecting data integrity.
• Work with historical records, versioned data, snapshots, and audit trails.
• Implement secure authentication, authorization, and server-side access controls.
• Develop unit, integration, and end-to-end tests for business-critical functionality.
• Investigate production issues across application code, databases, APIs, and external integrations.
• Participate in architecture discussions, code reviews, releases, and technical documentation.
• Collaborate with technical and infrastructure teams on deployments, upgrades, and production reliability.
• Help improve engineering processes, observability, reliability, and developer productivity.

What We're Looking For

• 5+ years of professional software engineering experience, with strong full-stack development experience.
• Proven ability to independently deliver production-quality features.
• Strong backend and frontend development skills.
• Strong knowledge of PostgreSQL and SQL.
• Experience designing and consuming REST APIs and integrating external systems.
• Experience with background processing, scheduled jobs, queues, and asynchronous workflows.
• Solid understanding of authentication, authorization, and secure software development.
• Experience writing automated tests and working with Git and CI/CD pipelines.
• Strong debugging and troubleshooting skills across application, database, and integration layers.
• Ability to understand existing systems quickly and make thoughtful improvements without introducing unnecessary complexity.
• Strong written and verbal communication skills.
• Ability to work independently while collaborating effectively within a small engineering team.

Nice to Have

• Experience with financial technology, investment operations, or data-intensive B2B applications.
• Experience building and deploying applications on AWS.
• Experience with customer-specific or multi-tenant application environments.
• Familiarity with configurable or metadata-driven applications.
• Experience working with historical, effective-dated, or append-only data.
• Experience with document-processing and human-in-the-loop workflows.
• Experience addressing security assessment findings and improving application security.
• Experience with modern frontend frameworks such as React, Vue, or Angular.
• Experience with Python, Node.js, TypeScript, Java, Go, or similar backend technologies.

What You'll Accomplish in Your First 90 Days

First 30 days

• Learn Golden Flash's technology stack, architecture, products, and development processes.
• Become familiar with our core application workflows and data model.
• Begin contributing production fixes and smaller features.

First 60 days

• Independently deliver meaningful full-stack features.
• Improve automated test coverage for critical workflows.
• Identify opportunities to improve application reliability and maintainability.

First 90 days

• Own and deliver larger engineering initiatives.
• Improve the reliability and observability of key integrations and background processes.
• Contribute to deployment, release, and engineering documentation.
• Become a trusted technical owner for important areas of the platform.

Benefits

• Competitive salary based on experience and qualifications.
• Employer-sponsored medical insurance.
• 401(k) with employer matching.
• Paid vacation, sick leave, and company holidays.
• Company-provided equipment.
• Fully remote work within the United States.
• Opportunity to work on meaningful products with significant engineering ownership.

Work Authorization & Location

This position is remote within the United States.

Candidates must be authorized to work in the United States. Employment is subject to verification of work authorization, employment history, and professional references.

Candidates may be asked to complete a technical assessment relevant to the role.

Some responsibilities may involve access to confidential customer or company systems and therefore require compliance with applicable security and confidentiality requirements.

Why Join Golden Flash?

At Golden Flash, you'll have the opportunity to make a direct impact on the products and engineering systems you work on. We value ownership, thoughtful engineering, reliability, and continuous improvement.

If you're a senior engineer who enjoys solving challenging problems, working across the stack, and taking ownership from idea to production, we'd love to hear from you.