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Senior Full-Stack Software Engineer
Weekday (YC W21)Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in developing and maintaining production-grade full-stack applications, with strong proficiency in Python, React, JavaScript, Java, Node.js, Rust, Golang, and TypeScript. Capable of navigating complex codebases and delivering high-quality solutions through effective debugging and problem-solving skills.
Highest-signal resume keywords
Full-Stack Application DevelopmentFront-End Software EngineeringBack-End Software EngineeringCode Review and EvaluationProblem-Solving and Debugging
Tech Stack
Tools & technologiesAbout the role
Key responsibilities & impact- Develop, enhance, and debug front-end and back-end components across production applications
- Build user-facing features and supporting services, APIs, database structures, and data models
- Trace requests and data flows across browsers, front-end applications, APIs, back-end services, databases, and third-party integrations
- Navigate unfamiliar repositories, understand application architecture, and identify dependencies and implementation patterns
- Diagnose and resolve issues involving application state, API contracts, authentication, data persistence, network communication, and deployment
- Evaluate, modify, translate, and improve software implementations across multiple programming languages
- Review and validate AI-generated and developer-written code for correctness, efficiency, security, scalability, and maintainability
- Design reliable solutions to challenging engineering problems and validate implementations against requirements and specifications
- Complete a technical assessment if required and participate in the selection process
- Complete and submit the specified minimum number of tasks each week
- Begin first tasks within 24–48 hours of selection and onboarding
Requirements
What you’ll need- Significant professional experience developing and maintaining production-grade full-stack applications
- Strong hands-on expertise in front-end and back-end software engineering
- Professional experience working with multiple programming languages and adapting to different technology stacks
- Solid understanding of browser-based applications, APIs, application state management, databases, and service integrations
- Experience designing, understanding, and contributing to complete software-system architecture
- Ability to navigate unfamiliar codebases and quickly understand existing implementations
- Strong debugging, analytical thinking, and problem-solving capabilities
- Experience reviewing code and evaluating solutions for performance, reliability, security, and maintainability
- Ability to work independently, manage complex technical tasks, and deliver high-quality results
- Required skills: Python, React, JavaScript, Java, Node.js, Rust, Golang, TypeScript
- Availability to begin immediately and start first tasks within 24–48 hours after selection and onboarding
Benefits
Comp & perks- Flexible schedule — choose the hours and days worked, including weekends if desired
- Contractor work arrangement (~15 hours per week)
ATS Keywords
✓ Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
PythonReactJavaScriptJavaNode.jsRustGolangTypeScriptAPI DevelopmentDatabase Management
Soft Skills
Analytical ThinkingIndependent WorkTask Management
Industry Keywords
Production-Grade ApplicationsApplication ArchitectureService IntegrationsApplication State ManagementSoftware-System Architecture