Junior Full-Stack Software Engineer

Description Flexi Software is hiring Junior and entry-level Full-Stack Software Engineers to help build the next generation of our platform. You will work across C# services and modern web front ends built with Node.js, React, and Next.js, backed by Microsoft SQL Server, and you will build, test, and deliver enterprise-grade software for financial institutions. We are looking for engineers who embrace an AI-empowered software development lifecycle. At Flexi, AI is part of how we design, code, review, test, and document. You will work with agentic tools every day, and you will learn to direct them with good judgment, verify what they produce, and hold the result to the standards our banking, insurance, and financial services customers depend on. Your primary focus will be delivering our next-generation web platform. On a limited basis, you may also work on Flexi's legacy Windows desktop solutions in C++ and C#, which gives you broad exposure to how enterprise software evolves. This role is a strong starting point for an early-career engineer who wants to grow quickly, learn from experienced engineers, and ship real software at scale. This is a hybrid position, working in person with the team in our Atlanta, GA office. About Flexi Flexi Software has been a trusted provider of accounting solutions for over 30 years, offering both cloud-based and on-premise software purpose-built for organizations with the most complex accounting requirements — multi-entity and intercompany accounting at scale. Our comprehensive suite includes modules like General Ledger, Accounts Payable, Accounts Receivable, Purchasing, Fixed Asset Management, Project Accounting, Workflow Automation, Financial Reporting, and Budget Software. Serving industries including banking, insurance, financial services, credit unions, healthcare, and business process outsourcing, Flexi is renowned for its robust features, flexible deployment options, and exceptional customer support. In January 2025, Flexi was acquired by Quality Standard, a permanent capital holding company that acquires and grows fintech and govtech software businesses with a long-term ownership mindset. Quality Standard is actively investing in Flexi's people, product, and operations. Flexi's office is located in Atlanta, GA. Quality Standard is headquartered in New York, NY. Roles And Responsibilities Build, test, and deliver full-stack features for Flexi's next-generation platform, working across C# back-end services and APIs and Node.js, React, and Next.js front endsWrite clean, maintainable, well-tested code, including unit and integration tests, as part of every change you shipWork with Microsoft SQL Server: write queries and stored procedures, design tables, and learn to tune for application and database performanceUse AI coding assistants and agentic workflows daily across design, coding, code review, testing, and documentation, and learn to direct them effectivelyReview and verify AI-generated code with care, owning correctness, security, and quality for everything you commitTake part in code reviews, both giving and receiving feedback, to build skill and uphold team standardsContribute to CI/CD pipelines, automated testing, and release practices so changes move to production safely and oftenBuild with the security, reliability, and data integrity expected of enterprise financial software, including input validation, error handling, and audit-friendly designInvestigate and resolve defects, tracing issues across the front end, services, and databaseWrite and maintain technical documentation, including API documentation and developer notesPartner with Product, QA, and senior engineers to turn requirements into shipped customer-facing softwareContribute on a limited basis to Flexi's legacy Windows desktop solutions in C++ and C#, while next-generation web platform delivery remains your primary focus, and learn how the new platform integrates with these existing products and our DevOps environmentGrow your skills through mentorship, pairing, and regular feedback, and share what you learn about AI-assisted development with the team Requirements Bachelor's degree in Computer Science, Software Engineering, or a related technical field — or equivalent practical experience, such as a bootcamp, internship, or substantial project work0–3 years of professional software development experience; internships and strong personal or academic projects countWorking knowledge of C# and the .NET platform, including object-oriented programming fundamentals, and a willingness to work in legacy C++ and C# Windows desktop code on a limited basisWorking knowledge of JavaScript or TypeScript, HTML, and CSS, with hands-on experience building applications in ReactExperience or coursework with Node.js and Next.js, including routing, server-side rendering, and API routesWorking knowledge of relational databases and SQL, with exposure to Microsoft SQL Server preferredFamiliarity with building and consuming REST APIsExperience with Git and a collaborative, pull-request-based workflowActive, hands-on use of AI coding assistants and agentic tools in your own work, with a clear sense of when to trust their output and when to question itA solid grasp of software testing fundamentals, including writing unit testsStrong problem-solving skills and attention to detailClear written and verbal communication skills, and the ability to ask good questions and take feedback well Preferred Qualifications Experience with ASP.NET Core, Entity Framework, or Web API developmentExperience with Vite, modern build tooling, and component libraries or design systemsExperience delivering web applications in a B2B software environment using modern AI-accelerated tools such as Claude Code, Cursor, and Codex, including prompt and context engineering for coding tasksExposure to automated testing frameworks such as xUnit, NUnit, Jest, Playwright, or CypressFamiliarity with CI/CD pipelines, such as Azure DevOps or GitHub Actions, and containerizationExposure to AWS or Azure cloud platformsInterest in or exposure to secure coding practices, including OWASP guidanceExperience with ERP, accounting, financial, or other enterprise systems of record, especially B2B enterprise software, and prior experience in the financial services industry or financial accounting Personal Characteristics AI-curious and AI-forward; you actively use AI tools in your own work, enjoy experimenting with agentic workflows, and share what worksRigorous about quality; you treat AI output as a draft to be verified, not a result to be trusted blindlyA builder; you like turning an idea into working software and seeing it usedEager to learn; you ask questions, seek feedback, and improve quicklyHands-on and persistent; you stay with a hard bug until you understand the causeSecurity- and detail-minded; you understand that accuracy and data integrity matter in financial softwareCollaborative and low ego; you work well with engineers, QA, and ProductHigh integrity and sound judgment; trusted with sensitive customer and product informationPositive attitude and sense of humor; work is way more fun with people you enjoy! What Success Looks Like In The First 6 Months Fully onboarded to Flexi's codebase, tooling, and AI-assisted development workflow, and contributing confidentlyShipping production-ready features and fixes across the C# back end, SQL Server, and the React/Next.js front endDelivering well-tested work that passes review with steadily fewer correctionsUsing AI tools effectively and responsibly, with changes that are verified, secure, and understoodContributing meaningfully to code reviews, tests, and documentationUnderstanding how the new platform fits with Flexi's existing C++/C# Windows desktop products and delivery pipeline, and contributing to them when neededDeveloping a clear growth plan with your manager and mentor, with growing independence on well-defined tasks Flexi provides excellent benefits including paid holidays and paid time off, a 401(k) Plan with company match, health and dental insurance, life and disability insurance, and a vision discount plan. Location: Hybrid Atlanta, GA area only Only candidates under consideration will be contacted. Any offer of employment will be contingent upon positive criminal background check. No phone calls, please. Principals Only. Drug-free workplace. M/F/V/H EEO