Senior Full Stack Developer - Angular, C#, PostgreSQL

We are seeking a Senior Full Stack Developer with strong experience across the full application stack. This role is ideal for someone who is comfortable working from the user interface all the way through backend services, databases, integrations, infrastructure, testing, deployment, monitoring, and support.

Because we are a small startup, this is not a narrow role where you will be assigned one small function forever. You will work on a wide variety of meaningful projects, solve real customer problems, and have a direct impact on the success of the company and our customers.

The right person will be sharp, self-directed, practical, and capable of taking a requirement from idea to production. You should be comfortable making technical decisions, asking good questions, reviewing AI-assisted code critically, writing test scripts, improving architecture, and helping us continue to scale a reliable SaaS platform.

What You’ll Work On

You may be involved in:

• Building and improving modern Angular application features
• Developing and maintaining C# services and backend infrastructure
• Working with PostgreSQL databases, queries, schemas, and performance optimization
• Building integrations with third-party APIs and customer systems
• Improving AWS infrastructure, deployment pipelines, observability, and reliability
• Creating automated tests, validation scripts, and QA processes
• Reviewing AI-generated code and ensuring it is safe, correct, maintainable, and aligned with requirements
• Troubleshooting production issues and supporting system reliability
• Participating in an on-call rotation after an appropriate ramp-up period

Do you have experience in Software engineering?, * 8+ years of professional software development experience

• Strong experience with modern Angular
• Strong C# / .NET backend development experience
• Strong PostgreSQL experience, including writing and optimizing queries
• Experience with AWS infrastructure and production SaaS environments
• Ability to work across the full stack without needing a large team around every function
• Strong debugging, problem-solving, and code review skills
• Ability to translate business requirements into reliable technical solutions
• Experience writing test scripts and validating system behavior
• Strong communication skills and a practical, ownership-oriented mindset
• Willingness to participate in an on-call rotation after ramp-up, * Experience using AI coding tools such as Codex, GitHub Copilot, Claude Code, Cursor, or similar tools
• More importantly, the ability to critically evaluate AI-generated code rather than blindly trust it
• Experience with SaaS products serving small or mid-sized businesses
• Experience with payment systems, booking systems, POS systems, waivers, CRM, reporting, or customer-facing operational software
• Strong references from people we may already know or can easily verify through our professional network

Who Will Succeed in This Role

This role is a strong fit for someone who:

• Wants to build and own important product areas
• Enjoys working on a wide variety of problems
• Takes pride in shipping reliable, useful software
• Is comfortable in a small-team startup environment
• Can work independently without needing every task fully pre-defined
• Wants to be part of a company for the long term
• Is looking for upside, responsibility, and meaningful impact

We are looking to invest in someone who wants to be part of High Trek POS for 3+ years and grow with the company., This role is probably not a fit if you are looking for a low-pressure job, a narrow role with limited responsibility, or a short stop before your next move. We are not looking for someone who frequently jumps from job to job or wants to be isolated from the broader needs of the business., Recent professional references will be required. References within our extended professional network are a strong plus.

We are especially interested in hearing about systems you have helped build, scale, troubleshoot, or improve in production.

Pay: $125,000.00 - $175,000.00 per year

Benefits:

• Work from home

High Trek POS is looking for a Senior Full Stack Developer to join our growing software company and help build the next generation of our all-in-one platform for tour, activity, attraction, and recreation businesses.

We are a profitable, fast-growing startup with a small, highly capable team. This is a high-impact role for someone who wants ownership, variety, technical challenge, and the opportunity to help shape a product that is actively used every day by real businesses across the United States and Canada.

About High Trek POS

High Trek POS provides modern reservation, ticketing, waiver, and point-of-sale software for experience-based businesses. Our customers include ropes courses, zipline parks, museums, zoos, laser tag centers, axe throwing venues, trampoline parks, water parks, farms, family entertainment centers, and other tour and activity operators.

Our platform helps businesses manage online bookings, in-person POS sales, digital liability waivers, memberships, gift cards, food and beverage, group sales, customer communication, financial reporting, and more - all in one system.

We are not a large corporate software company. We are a focused, entrepreneurial team building practical tools that help operators grow revenue, reduce labor, and run better businesses.