Full Stack Developer

OneSource Virtual

3d•Remote

About The Position

OneSource Virtual (OSV) is seeking a Full Stack Developer to join their product engineering team. This is a staff-level individual contributor role for a developer who can work independently across the full stack, deliver high-quality features with no supervision, and actively contribute to the team’s technical direction. The role involves building and maintaining software across C#/.NET services, React UI, and SQL on platforms that process over $200 billion in compliant payroll and tax payments annually. OSV is an AI-first engineering organization, and the expectation at this level is not just to use AI tools fluently but also to set an example for less experienced teammates and contribute to the team's evolving AI-assisted practices.

Requirements

Bachelor’s degree in Computer Science, MIS, or a related technical field
3+ years of experience developing applications using the Microsoft stack (C#/.NET, Entity Framework, ADO.NET, MVC)
2+ years of experience building and consuming SOAP/REST web services
2+ years of experience developing against relational databases with SQL
Experience with Agile/Scrum development methodology
Experience working in a CI/CD environment
Demonstrated, hands-on daily use of AI coding tools (Windsurf, Claude Code, Cursor, or equivalent) — fluent usage is expected at this level, not a nice-to-have
Able to write effective prompts for code generation, refactoring, debugging, and test creation
Understands the limitations of AI-generated code and applies appropriate review rigor before committing
Comfortable discussing AI tool usage and contributing to team standards around it

Nice To Haves

React or front-end JavaScript framework experience
Experience with Salesforce development (APEX, SOQL, Lightning components)
Familiarity with Workday integrations or HCM platforms
Experience with cloud platforms (AWS, Azure) and cloud-native application patterns

Responsibilities

Execute all phases of the software development lifecycle — design, development, testing, bug fixes, refactoring, and technical debt reduction
Work full stack stories independently using simple, clean design solutions with a low defect rate
Implement software using the Microsoft stack (C#/.NET, Entity Framework, MVC) deployed in Azure/AWS cloud environments
Build and consume REST and SOAP web services; develop and maintain React front-end components
Perform data modeling tasks that match established best practice patterns and standards
Participate actively in work breakdown — asking questions, completing work plans, and surfacing potential problems before they arise
Demonstrate the ability to lead swarming efforts on complex user stories
Assist teammates, offer constructive feedback, and contribute to team-wide quality improvement
Use AI coding tools (Windsurf, Claude Code, Cursor, or equivalent) fluently as a standard part of daily work — code generation, debugging, test writing, code review, and understanding unfamiliar codebases
Apply AI tools to improve delivery speed and code quality, not as a substitute for understanding the code you ship
Review and validate all AI-generated output before committing; set a visible standard for responsible AI use on the team
Offer informal guidance to associate-level developers on effective and responsible AI tool usage
Contribute to evolving team norms around AI tooling as practices and tooling change
Be an active, contributing member of an Agile Scrum team — write stories, groom the backlog, and engage in all sprint ceremonies
Work closely with the development manager, technical lead, product owner, and scrum master to meet project commitments
Set accurate time estimates for work assigned to your area of knowledge and adjacent areas
Communicate proactively when timelines are at risk
Learn and integrate platform-specific knowledge — Workday, Salesforce, and OSV’s payment and tax domain — as part of your ongoing development