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# Senior Software Engineer

- **Company:** Billtrust
- **Location:** United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), PHP (Programming Language), Artificial Intelligence, HTML5, C Sharp (Programming Language), C++ (Programming Language), Cascading Style Sheets (CSS), Software as a Service, Code Coverage, Code Review, Relational Databases, Cursor (Graphical User Interface Elements), DevOps, Microsoft SQL Server, MySQL, Node.Js, Standard Sql, Software Engineering, TypeScript, ReactJS, Backend, Git, Syntactically Awesome Style Sheets (SASS), AngularJS, Information Technology, Restful APIs, Software Version Control
- **Published:** August 6, 2026
- **Apply:** https://us.experteer.com/career/view-jobs/senior-software-engineer-usa-58859528

## About the Role

our templates, prompt patterns, validation workflows) * Design scalable software with a DevOps mindset and implement REST APIs * Maintain both UI and backend services within the cohort domain * Mentor engineers on AI tool usage, spec writing, and code review; share knowledge across cohorts * Support and collaborate with cross-functional teams across the organization Tasks * 5+ years of relevant software engineering experience with scalable SaaS * Bachelor's degree in Computer Science or equivalent * Proficiency in C#, C++, PHP, Java, Node.js or similar * Strong web tech skills: HTML5, CSS/Sass, Angular, React, TypeScript/JavaScript, REST APIs * Strong SQL and relational DB knowledge (SQL Server or MySQL) * Experience with AI coding assistants (Claude Code, Codex, Cursor) and code review skills * Collaborative and communicative, with mentoring experience * GIT or similar source control experience Key requirements * comprehensive health coverage * competitive retirement plan * generous
PTO and parental leave * flexible work options * professional development investments * equity or variable incentives may apply

## Description

Experteer Overview As a Sr. Software Engineer at Billtrust, you will design and deliver complex features across our SaaS platforms, leveraging AI tools to accelerate development and ensure high quality. You'll work within a domain-aligned cohort to influence architecture, mentor peers, and ship scalable solutions. Your work helps advance our AI-assisted development practices and supports a fast-growing fintech product. This role offers meaningful impact at the frontier of AI and fintech. Compensation / Benefits * Own end-to-end feature specification ensuring completeness and edge-case coverage * Collaborate with Product Manager to translate requirements into technical specs * Lead technical decisions and contribute domain expertise within the cohort * Drive AI-assisted implementation and review AI-generated code for correctness, security, and performance * Validate AI-generated tests and ensure broad test coverage for complex scenarios * Improve AI-assisted development practices (spec templates, prompt patterns, validation workflows) * Design scalable software with a DevOps mindset and implement REST APIs * Maintain both UI and backend services within the cohort domain * Mentor engineers on AI tool usage, spec writing, and code review; share knowledge across cohorts * Support and collaborate with cross-functional teams across the organization Tasks * 5+ years of relevant software engineering experience with scalable SaaS * Bachelor's degree in Computer Science or equivalent * Proficiency in C#, C++, PHP, Java, Node.js or similar * Strong web tech skills: HTML5, CSS/Sass, Angular, React, TypeScript/JavaScript, REST APIs * Strong SQL and relational DB knowledge (SQL Server or MySQL) * Experience with AI coding assistants (Claude Code, Codex, Cursor) and code review skills * Collaborative and communicative, with mentoring experience * GIT or similar source control experience Key requirements * comprehensive health coverage * competitive retirement plan * generous PTO and parental leave * flexible work options * professional development investments * equity or variable incentives may apply


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