Junior: Junior developers are expected to write basic functional code by following guidelines and examples. They should have a good grasp of syntax and core programming concepts in at least one language, focusing on correctness and clarity.

Middle: Middle developers should be capable of writing more complex and efficient code, incorporating standard design patterns and best practices. They're expected to contribute to the codebase with minimal supervision, optimizing for readability and maintainability.

Senior: Senior developers are expected to excel in writing high-quality, scalable, and performance-optimized code. They lead in architectural design decisions, mentor juniors, and push forward best coding practices and innovations across teams.

Junior: At this level, developers should be able to understand and follow the logic of existing simple codebases, identify bugs, and make minor modifications with guidance. They're learning to navigate code and use debugging tools effectively.

Middle: Middle developers are expected to comfortably navigate and understand complex codebases. They should identify areas for improvement, refactor code for better efficiency, and have a solid grasp of the system's architecture to debug and enhance features independently.

Senior: Senior developers should have an in-depth understanding of complex systems, foresee the implications of code changes, and contribute strategically to the architecture. They guide the evolution of the codebase and solve architectural puzzles.

Junior: Junior developers should understand the importance of testing and be able to write basic tests (e.g., unit tests) for their code, following examples and best practices. They are learning about different types of tests and when to apply them.

Middle: Middle developers are expected to design and implement comprehensive testing strategies that include unit, integration, and possibly UI tests. They should improve test coverage and efficiency, identifying critical paths for testing.

Senior: Senior developers lead in creating, optimizing, and maintaining automated testing frameworks and strategies. They advocate for testing best practices, mentor others in effective testing techniques, and ensure the product meets the highest reliability standards.

Junior: Understands basic design principles and patterns. Can follow architectural guidelines and contribute to small modules or components under supervision. Begins to understand the importance of scalability and maintainability.

Middle: Capable of designing and implementing more complex modules within an established architecture. Starts to contribute to architectural discussions and decisions, focusing on improving application scalability, efficiency, and maintainability.

Senior: Leads architectural design and decision-making processes. Has a deep understanding of system-wide implications, designs for scale, resilience, and performance. Guides the evolution of the architecture to meet business and technical challenges.

Junior: Knows the basics of version control and can follow the team's release processes. Understands the importance of release notes and can assist in preparing them. Begins to participate in deployment activities under guidance.

Middle: Takes an active role in the release process, managing version control branches, ensuring the quality of release notes, and coordinating deployments. Can identify and mitigate risks associated with releases.

Senior: Oversees and optimizes the release process, from code merge strategies to deployment. Ensures best practices in continuous integration and delivery (CI/CD) are followed. Mentors others and leads in automating and streamlining release processes.

Junior: Understands the basics of logging, monitoring, and alerting. Can implement simple logging in their code and uses monitoring tools to troubleshoot straightforward issues.

Middle: Implements and enhances observability frameworks (logging, metrics, tracing). Can design meaningful alerts and dashboards for monitoring application health and performance, contributing to the observability strategy.

Senior: Leads in defining and evolving the observability strategy to ensure comprehensive system visibility. Architects scalable monitoring and logging solutions, mentors others, and uses observability insights for proactive system improvements.

Junior: Aware of basic performance optimization techniques and best practices. Can conduct simple performance tests and optimizations under supervision, focusing on code efficiency.

Middle: Conducts performance analysis and optimizations across the codebase. Can identify bottlenecks and implement solutions to improve application responsiveness and efficiency. Understands the impact of design decisions on performance.

Senior: Leads performance tuning and scalability efforts. Designs systems and architectures with high performance in mind. Guides performance best practices, tooling, and methodologies. Conducts advanced performance analysis and optimization.

Junior: Has a foundational understanding of security principles. Can implement basic security measures in code under supervision and follows secure coding guidelines. Aware of common security threats (e.g., SQL injection, XSS).

Middle: Actively incorporates security practices into development workflows, conducts code reviews with security in mind, and can mitigate common security vulnerabilities. Stays updated with security trends and threats.

Senior: Leads security initiatives, designs secure architectures, and conducts advanced security assessments. Advocates for security-first mindset, mentors others in secure coding practices, and responds to security incidents. Develops and enforces security policies and procedures.

Junior: Understands the basics of internationalization and localization. Can implement localization for simple text elements under supervision, using tools and frameworks provided by the team.

Middle: Can manage more comprehensive localization projects, ensuring applications support multiple languages and regions effectively. Works on internationalization efforts to make the codebase easily localizable.

Senior: Leads localization and internationalization strategies, ensuring applications are designed for a global audience from the ground up. Oversees the implementation of robust frameworks to support multiple languages and cultural norms, mentoring others in best practices.

Junior: Understands the basic principles of web accessibility; knows how to use ARIA roles and semantic HTML for improved accessibility.

Middle: Can audit a site for accessibility issues and implement fixes; understands advanced accessibility principles and guidelines (WCAG).

Senior: Leads accessibility initiatives, designs accessible interfaces from the ground up, and mentors others in accessibility best practices.

Junior: Able to document their own code clearly; understands the importance of comments and basic README files.

Middle: Writes comprehensive documentation for modules or projects, including setup, configuration, and usage instructions; contributes to internal documentation standards.

Senior: Oversees documentation strategy for projects or teams; ensures documentation is up-to-date and useful; advocates for documentation culture within the organization.

Junior: Participates in code reviews, providing basic feedback based on style guides and best practices; learns from feedback received.

Middle: Provides thorough and constructive feedback on code reviews; helps to enforce coding standards and best practices.

Senior: Leads code review sessions; sets standards for code quality and review processes; mentors others in effective review techniques.

Junior: Follows established development processes; learns and adheres to best practices in development workflows.

Middle: Analyzes and suggests improvements to current processes; leads in the adoption of new processes within the team.

Senior: Oversees and evolves development processes; champions efficiency and quality in development practices; mentors teams in agile and other processes.

Junior: Has foundational knowledge of the primary technology stack; stays informed about new tools and libraries within the ecosystem.

Middle: Explores and integrates new tools, libraries, and best practices into projects; shares knowledge of the tech ecosystem with the team.

Senior: Influences the direction of the team's technology choices; evaluates and advocates for technologies that align with long-term goals; mentors others in the tech ecosystem.

Junior: Demonstrates technical competence and the ability to follow leadership; begins to lead small initiatives or parts of projects.

Middle: Leads projects or teams on technical fronts; mentors juniors; makes significant contributions to architectural decisions.

Senior: Sets technical vision and strategy; inspires and guides multiple teams; ensures alignment of technical efforts with business objectives.

Junior: Understands the importance of quality and basic testing practices; writes tests for own code under guidance.

Middle: Designs and implements comprehensive testing strategies for features or projects; mentors others in best testing practices.

Senior: Oversees and advocates for quality assurance practices across projects or the organization; sets quality standards; fosters a culture of continuous improvement.

Junior: Has a basic understanding of UX design principles; applies these principles under guidance in projects.

Middle: Designs and evaluates user interfaces for usability and accessibility; contributes to UX discussions and decisions.

Senior: Leads UX strategy and design decisions; ensures products meet high standards of usability and user satisfaction; mentors others in UX principles.

Junior: Shares knowledge with peers through code reviews and pair programming; actively learns from others.

Middle: Leads internal knowledge sharing sessions (e.g., lunch and learns, tech talks); contributes to the company's knowledge base.

Senior: Establishes knowledge sharing frameworks; mentors junior developers; drives the adoption of best practices across teams.

Junior: Actively seeks feedback on their work; is open and receptive to constructive criticism; begins to learn how to give constructive feedback to peers.

Middle: Regularly provides and receives constructive feedback; uses feedback for personal growth and improving team dynamics.

Senior: Facilitates a feedback-rich environment; mentors others in giving and receiving feedback effectively; uses feedback to drive improvements in team and organizational practices.

Junior: Communicates clearly and concisely in written and verbal form; listens actively and asks questions for clarification.

Middle: Facilitates effective team communication; adept at technical and non-technical communication; mediates discussions.

Senior: Champions open communication across the organization; mentors others in effective communication; excels in strategic communication with stakeholders.

Junior: Collaborates effectively with team members; shows willingness to help others and asks for help when needed.

Middle: Takes initiative in team projects; works effectively across departments; starts to mentor junior team members.

Senior: Leads by example in teamwork; fosters a collaborative team environment; resolves conflicts and builds team cohesion.

Junior: Understands task assignments and breaks down tasks into manageable chunks; meets individual deadlines.

Middle: Plans and estimates work for features; breaks down projects into tasks for others; manages dependencies within the team.

Senior: Oversees project planning and breakdown; ensures efficient work distribution and alignment with project goals; mentors others in planning and estimation.

Junior: Delivers assigned tasks on time; takes responsibility for personal tasks and outcomes.

Middle: Manages multiple tasks or projects reliably; ensures team meets delivery commitments; holds others accountable.

Senior: Ensures team and department reliably deliver on commitments; fosters a culture of accountability; strategically manages risk and resources for on-time delivery.

Junior: Understands basic product concepts and how their work contributes to product goals; seeks to learn about the product's users and their needs.

Middle: Contributes ideas for product improvement; understands user feedback and incorporates it into work; helps bridge the gap between tech and product vision.

Senior: Leads in aligning technology efforts with product strategy; drives product innovation; mentors others in understanding and contributing to product goals.

Junior: Understands team OKRs and how individual work contributes to these objectives; actively works towards meeting personal key results.

Middle: Contributes to setting and refining team OKRs; monitors progress and helps adjust plans to meet key results.

Senior: Leads in defining and aligning OKRs at the team and organizational level; ensures strategies are in place to meet ambitious goals; mentors teams in OKR setting and achievement.

Junior: Understands basic product principles and the importance of user-centered design; applies this understanding to day-to-day development tasks.

Middle: Leverages product thinking to influence project decisions; advocates for user needs and usability in development.

Senior: Leads product strategy discussions; integrates product thinking into the development process across teams; mentors others in product-centric development approaches.

Junior: Identifies project stakeholders; communicates effectively with immediate team and stakeholders about task progress.

Middle: Manages stakeholder expectations through regular updates and feedback loops; collaborates across functions to meet project goals.

Senior: Strategizes stakeholder engagement across projects; builds strong relationships with key stakeholders; navigates and resolves complex stakeholder issues.

Junior: Demonstrates work through code commits, participation in meetings, and regular updates to the team.

Middle: Shares achievements and learnings within and outside the team through demos, presentations, and written updates; begins to build a professional network.

Senior: Advocates for the engineering team's work to the wider organization and industry; represents the team in cross-functional discussions; fosters a culture of transparency and visibility.

Junior: Seeks mentorship and is receptive to guidance; may begin to mentor peers in specific areas of expertise.

Middle: Actively mentors junior team members in technical skills and professional development; provides support and guidance.

Senior: Designs and leads mentoring programs; fosters a culture of mentorship within the organization; serves as a role model and advisor.

Junior: Learns quickly during the onboarding process; seeks to understand the team's processes, tools, and culture.

Middle: Assists in onboarding new team members; shares knowledge of team practices and codebase; provides feedback on the onboarding process.

Senior: Oversees and improves the onboarding process for new hires; ensures a smooth transition and integration into the team; mentors others in effective onboarding practices.

Junior: Contributes positively to team culture; demonstrates respect, inclusivity, and collaboration in daily work.

Middle: Actively promotes a positive, inclusive team culture; participates in or organizes cultural initiatives.

Senior: Shapes and champions the organizational culture; leads by example in fostering a positive, inclusive, and innovative work environment; addresses cultural challenges.

Junior: Participates in the hiring process as needed, such as by assisting with interviews or candidate evaluations.

Middle: Plays a key role in the hiring process; conducts interviews; evaluates candidates for technical and cultural fit.

Senior: Strategically involved in hiring decisions; designs hiring processes; ensures alignment with organizational values and skills needs; mentors others in effective hiring practices.

Junior: Demonstrates ability to solve straightforward problems; applies critical thinking to understand issues and seek solutions.

Middle: Solves complex problems with innovative solutions; applies critical thinking to evaluate different approaches and impacts.

Senior: Leads in problem-solving and decision-making at a strategic level; fosters a problem-solving culture; mentors others in critical thinking and creative solutions.

Junior: Shows willingness to learn and try new approaches; contributes ideas to team discussions.

Middle: Drives innovation within projects by proposing and implementing creative solutions; encourages team innovation.

Senior: Champions innovation at the organizational level; creates an environment that encourages creative thinking and experimentation; leads strategic initiatives for innovation.

Junior: Adapts to new tasks and environments with a positive attitude; shows eagerness to learn and grow.

Middle: Demonstrates resilience in the face of change; actively seeks out learning opportunities to enhance skills and adapt to new technologies or methodologies.

Senior: Leads by example in adaptability; fosters a learning culture within the team and organization; mentors others in managing change and continuous learning.

Junior: Recognizes conflicts and seeks help to resolve them; demonstrates willingness to understand different perspectives.

Middle: Facilitates conflict resolution within the team; employs effective communication and mediation techniques.

Senior: Manages and resolves complex conflicts at the team or organizational level; mentors others in conflict resolution strategies; fosters a collaborative work environment.

Junior: Manages personal time and tasks effectively; meets deadlines for assigned work.

Middle: Prioritizes tasks and projects efficiently; manages time across multiple responsibilities; helps team members with time management.

Senior: Sets priorities at the project or organizational level; mentors others in effective time management and prioritization; ensures alignment of efforts with strategic goals.

Junior: Demonstrates the ability to work effectively from a remote location; communicates clearly and stays engaged with the team.

Middle: Manages remote work challenges effectively; supports team members in remote settings; contributes to remote work policies.

Senior: Leads remote teams successfully; sets standards for remote work efficiency and engagement; ensures remote work practices support organizational goals.