Principal Software Engineer

Skillable is a 100% remote and virtual tech company that’s modernizing the world of training. Come share your professional magic with highly talented, driven and fun colleagues who believe in the power of “skilling.” Experience what a team focused on doing the right thing feels like!
Our talented people are what makes us friendly and have fun! We work together to create amazing solutions and experiences for our customers and their clients. We utilize our employees’ personal strengths to help grow our company and ensure our team is living their best, authentic life. We share our appreciation for our team members regularly during all-hands, a workplace appreciation tool, regular shoutouts in our Teams channels, social media, amongst more. Our remote-first work environment blends work and life without the added pressure of commuting or feeling guilty about leaving early to visit the dentist.
Come work with us and learn what teamwork and integrity blended with an emphasis on well-being and balance can do for your career and lifestyle!
We're An AI-first Engineering Team, And We Treat That As a Discipline, Not a Shortcut. Every Engineer Here Works With Agentic Coding Tools — Claude Code And GitHub CoPilot Are Key Drivers In Our Daily Work, Which Changes The Shape Of The Job
You'll spend more of your time on design, decomposition and review, and less on typing. Agents handle much of the implementation; you own the architecture, the verification and everything that ships.
We invest in the system that makes AI effective: project context, custom agents and skills, MCP integrations and multi-agent code review. Improving that system is engineering work here, and it's part of the role.
Judgment matters more, not less. Knowing when to hand work to an agent — and when not to — is a skill we hire for and grow.
Skillable's whole business is proving skills by doing. We hold our own work to the same standard: AI-assisted or not, it isn't done until it's verified.
The Principal Software Engineer is responsible for the technical shape of the team’s roadmap by choosing where their depth is the most beneficial, owning cross-cutting architecture, foundational dept, and the tooling that makes their whole area deliver faster and with quality. Develop and optimize APIs, databases, UIs, design systems, and libraries written in either C# or JavaScript/TypeScript. to ensure the product and technology roadmap is consistently delivered.
What You Will Do
Set the technical bar for a team; lead the design and scope of complex software features into well-defined implementation plans, leveraging AI-assisted development workflows to accelerate delivery while maintaining engineering rigor.
Guide and direct AI agents through feature development, serving as the primary architect, reviewer, and decision-maker to frame the problem, set constraints and make the calls that ensure solutions are aligned with business requirements and technical standards.
Build effective scaffolding that enables AI tools to generate high-quality, maintainable, and scalable code, project context management, reusable skills, agent workflows, prompt frameworks and automated quality checks.
Drive comprehensive automated testing and verification practices for every feature before release, ensuring unit tests and validation scenarios are tied back to the requirements.
Own the quality of all delivered software by rigorously reviewing AI-generated output, challenging assumptions, finding the gaps, and validating that solution fully resolves the problem.
Identify and mitigate risks associated with AI-assisted development, ensuring generated solutions meet expectations for security, maintainability, correctness, and long-term sustainability.
Continuously raise the team capabilities in AI-driven engineering by improving workflows, tooling, agents and best practices other engineers depend on for quality outcomes.
Create clarity for a team in undefined territory by framing the problem, setting constraints, and giving others a workable starting point where no pattern exists.
Makes the complex clear for technical and non-technical audiences, facilitates healthy disagreements, and consult with others on technical input before making a group decision.
Create and maintain documentation of features, design decisions, configurations, and other key technical areas of the application.
Lead the collaboration with other developers, QA engineers, designers, and product experts in a cross-functional scrum team.
Accountable for the team’s delivery, pace and quality by scoping and staging work across team members and representing them in cross-functional meetings.
Define scope and estimation for proposed features leading to accurate cost and timeline estimates
Propose, prototype, and champion technologies and processes that continuously help Skillable advance integration solutions.
Mentor team members and establish standards by developing talent, resolving technical friction, and communicating direction to create team alignment. Establish quality development patterns and practices, ensuring the team adheres to these standards.
Propose alternate designs that improve time-to-market or reduce cost or complexity.
Explore and recommend new technologies, patterns, and methods to accomplish items on the technical and product roadmap.
Recommend standards and best practices for non-functional requirements such as system performance, usability, reliability, adaptability, security, legal and other operational aspect.
Participate in team on-call rotation during evenings, weekends, or holidays for emergency support or special events.
Consistently review work to ensure quality, avoiding errors and maintaining high standards.
Contribute to interviewing and selecting new team members.
Support and promote the company values through positive interactions with both internal and external stakeholders on a regular basis.
Other strategic business initiatives or special cross-functional project involvement as required.
What You Bring To The Role
Bachelor’s degree in related field (computer software, computer science, software development, etc.) or equivalent work experience.
15+ years of professional experience as a software developer in an agile product team.
10+ years working with .NET Framework and C# required, AND Typescript or JavaScript required.
1+ years of professional work experience in a lead position or unofficially leading cross-functional projects.
Experience working with hands-on technical training environments, virtual labs, or learning platforms is highly desirable.
Experience mentoring and developing team members officially or unofficially, as well as promoting best practices and standards within a department and industry.
Hands on experience delegating real implementation work to AI agents and reviewing and verifying what comes back for delegated engineering, not autocomplete.
Proven experience regularly use of modern AI tools/agent tools including GitHub CoPilot and Claude Code or similar as a standard practice in building software that is not experimental.
Strong fundamentals in system design, debugging and code review so AI raises the bar for, supporting existing coding skills.
Evidence of building scaffolding around AI tools: custom agents, MCP servers, eval harnesses or enablement that made AI work more efficiently for a team or department, strongly preferred.
Exceptional judgment in AI-generated output, preventing pursuits of ineffective solutions and technical dead ends and ensuring course correction early.
Demonstrated experience in MSSQL and Entity Framework.
Proficiency in collaborating with UX designers to translate designs into working software.
Proficiency in creating and consuming RESTful APIs.
Proficiency in Unit Testing, including writing comprehensive, maintainable, and efficient test cases to ensure code correctness, reliability, and performance.
Experience working with cloud native applications.
Proactively addresses challenges, seeking opportunities for continuous improvement.
Self-motivated with the ability to contribute effectively with minimal supervision.
Ability to adapt to dynamic project needs while maintaining quality and focus.
Ability to participate in team on-call rotation during evenings, weekends, or holidays for emergency support or special events.
Experience with the following is appreciated but not strictly required: Authentication (e.g., OIDC, OAuth, SAML), NextJS, ExpressJS, and Building pipelines and DevOps practices.
Salary Range
The base salary for this position is $150,000 - $200,000 annually. Consistent with applicable laws, compensation will be determined based on the candidate's level, relevant skills, qualifications, and experience along with requirements for the position and annual financial plans.
Skillable is a distributed first team with employees working across the U.S., and we do not consider geography when determining compensation ranges.
Pay range and current benefit offerings are effective for 90 days from posting date. Standard employment offerings are subject to potential change upon periodic review and analysis, at the discretion of Skillable.
What We Offer
We believe in providing a suite of benefits that ensure our employees know we appreciate them as people first. Skillable

Work arrangement
Yes