Stage profile · Individual contributor

Mid-level Engineer

Owns a feature or component end to end, delivers reliably, follows operational feedback, and supports peers when relevant to the role.

Read these as observable expectations across repeated work, not as a checklist for a single project. First distinguish whether the role expects the work, whether the person had a chance to demonstrate it, and whether the evidence supports the claim. Lack of opportunity or evidence is not itself a negative judgment. AI use is judged by verified outcomes, sound boundaries, and the quality of decisions; choosing not to use AI can be sound.

Four complementary evaluation lenses

These lenses and the A–H capability map answer different questions. One experience may provide evidence across lenses, but do not count the same result multiple times.

Business outcomes

Understand the people served and intended outcomes, make evidence-based trade-offs, and verify contribution. For platform, infrastructure, reliability, and safety work, cost, efficiency, risk reduction, and internal-user outcomes count; direct revenue ownership is not universal.

Domain expertise

Apply relevant knowledge to diagnose, design, implement or review, validate quality, and make evolution decisions. The professional leaves required depend on the role.

Team influence

Help others work effectively through communication, coordination, review, shared methods, coaching, or organizational mechanisms. IC influence is not measured by direct reports; managers also own formal people responsibilities.

Human competitiveness

Observe questioning, reasoning, learning transfer, judgment updates, relationship handling, and recovery in work. This is not a fixed personality or potential verdict; do not infer it from extroversion, fluent speech, or willingness to overwork.

Evidence to verify

Use this structure to understand a real example. Strong judgment can appear in a failed project; a successful result alone does not prove personal causation.

  1. Context and goal
  2. Role and authority
  3. Judgment and trade-offs
  4. Actions and collaborators
  5. Outcome and guardrails
  6. Attribution limits
  7. Counterevidence and adjustment

The labels beside capability references describe that capability’s role in this standard; they do not make the whole standard optional. Any role or scenario condition is stated separately.

Business outcomesView progression
  1. Owns delivery of a feature and tracks whether it solves the intended user problem.

    Evidence to inspect: Reviews adoption, completion, or user feedback after release and adjusts.

  2. Makes evidence-based trade-offs among cost, quality, and speed within agreed goals.

    Evidence to inspect: Explains the choice, alternatives, and conditions that could change the result.

  3. Where role policy permits and risk is controlled, compares AI with alternatives on total cost, quality, and risk while owning the user outcome.

    Applies when: Do not assess by AI usage frequency or speed; consider task suitability and available validation.

    Evidence to inspect: Compares workflow time or quality and retains human review points.

  4. Breaks feature goals into milestones, acceptance measures, and pause conditions and updates them with feedback.

    Evidence to inspect: Plans include outcome hypotheses, dependencies, and changes.

Domain expertiseView progression
  1. Designs a maintainable component solution and identifies interfaces, state, and major failure modes.

    Evidence to inspect: Design supports requirements and explains capacity, migration, or rollback.

  2. Adds tests, observability, or security checks to important paths to reduce foreseeable failures.

    Evidence to inspect: Tests or runtime signals demonstrate that key constraints are protected.

  3. When AI is used, validates generated or suggested work according to impact and risk; escalates or rejects what cannot be explained or verified.

    Applies when: Assess only when AI is actually used or the role is expected to evaluate AI output.

    Evidence to inspect: Evidence includes tests, comparison cases, reference checks, or human approval.

  4. Maps business rules into component data, states, and interfaces and plans compatibility and migration.

    Evidence to inspect: The model explains exceptions, historical data, and migration checks.

  5. Tracks a component after release, rolls back or diagnoses failures, and verifies repairs.

    Evidence to inspect: Release monitoring, rollback conditions, and verified repairs form a closed loop.

Team influenceView progression
  1. Aligns dependencies and acceptance with product, design, and partner teams to deliver a feature.

    Evidence to inspect: Decisions, dependencies, and owners are clear; changes are shared promptly.

  2. Helps peers avoid repeat problems through reviews, documentation, or sharing.

    Evidence to inspect: Others reuse the practice; quality issues or handoff costs decline.

  3. Resolves collaboration disagreements by clarifying facts and constraints and reaching an actionable decision.

    Evidence to inspect: The disagreement ends with a decision, owner, and review point.

  4. Preserves decision context, operating instructions, and known risks so peers can take over.

    Evidence to inspect: A peer completes a change or diagnosis using the handoff material.

Human competitivenessView progression
  1. Changes the plan when evidence invalidates an assumption instead of defending the original approach.

    Evidence to inspect: Shows how new evidence changed priority or implementation.

  2. Builds trust by keeping commitments, surfacing bad news early, and aligning expectations.

    Evidence to inspect: Partners can plan around updates and face fewer surprises.

  3. Uses task fit, risk, and validation cost to decide when AI may assist, expert review is needed, automation should stop, or AI should not be used.

    Applies when: Allows a context-based decision not to use AI.

    Evidence to inspect: Identifies data, access, accuracy, or impact-scope risks.

  4. Clarifies goals, constraints, and missing facts before choosing how to investigate an ambiguous problem.

    Evidence to inspect: Clarifying questions change the problem framing or investigation, with explicit limits to inference.

  5. Adjusts methods, pace, or support after setbacks and tests improvement rather than repeating effort.

    Evidence to inspect: Explains concrete changes after failure and the next attempt's results.