Developer Onboarding 30/60/90

Create structured onboarding plans that set new engineers up for success through clear milestones, measurable outcomes, and stakeholder engagement.

Purpose

Design 30/60/90 day onboarding plans that:

• Define clear, measurable success criteria for each phase
• Map key stakeholders and relationships
• Identify risks and mitigation strategies
• Balance learning with early contributions
• Set expectations aligned with role level

When to Use

Invoke when:

• New hire accepted offer, start date approaching
• Redesigning engineering onboarding process
• Onboarding contractor-to-FTE conversion
• Creating role-specific onboarding tracks
• Manager preparing for new team member

Core Plan Structure

30-Day Plan: Foundation

Goals:

• Understand codebase, architecture, development workflow
• Complete environment setup and access provisioning
• Ship first small contribution
• Meet key stakeholders
• Understand team mission and current priorities

Measurable Outcomes:

• Development environment fully configured
• Successfully merged 1-2 small PRs (bug fixes, docs)
• Completed codebase onboarding (architecture walkthrough)
• Met 1:1 with manager, onboarding buddy, 3-5 teammates
• Attended team rituals (standups, sprint planning, retros)

Activities:

• Week 1: Setup, documentation, shadowing
• Week 2: First contributions (low-risk tickets)
• Week 3: Domain deep-dive, stakeholder meetings
• Week 4: Checkpoint with manager, reflection

Stakeholders:

• Onboarding buddy (day-to-day questions)
• Hiring manager (expectations, feedback)
• Tech lead (architecture, technical decisions)
• Cross-functional partners (PM, design, data)

Risks:

• Environment setup blockers → Mitigation: Pre-provision access
• Slow ramp due to codebase complexity → Mitigation: Pair programming
• Isolation (remote) → Mitigation: Daily check-ins, virtual coffee chats

60-Day Plan: Contribution

Goals:

• Own end-to-end features independently
• Demonstrate technical competency for level
• Build relationships across org
• Understand product roadmap and business context
• Begin mentoring/knowledge sharing

Measurable Outcomes:

• Shipped 1-2 medium-sized features independently
• Participated in on-call rotation (if applicable)
• Presented technical topic at team meeting
• Received peer feedback (formal or informal)
• Contributed to team processes (docs, tooling, best practices)

Activities:

• Week 5-6: Ramp up feature ownership
• Week 7: On-call shadowing or first shift
• Week 8: Mid-point review with manager

Stakeholders:

• Expanded team (other squads, adjacent teams)
• Product manager (roadmap context)
• Customers (user research, support tickets)

Risks:

• Overconfidence → moving too fast → Mitigation: Code review rigor
• Underconfidence → not asking for help → Mitigation: Explicit "ask questions" norm
• Misalignment on expectations → Mitigation: Clear rubrics, frequent feedback

90-Day Plan: Impact

Goals:

• Operate autonomously at level expectations
• Drive initiatives beyond assigned work
• Demonstrate ownership and leadership (for level)
• Receive positive performance feedback
• Successfully complete probation/trial period

Measurable Outcomes:

• Led design and implementation of significant feature
• Proactively identified and solved problem
• Positive feedback from peers and stakeholders
• Met all competency expectations for level (technical, leadership, collaboration)
• Manager recommendation to continue employment

Activities:

• Week 9-11: Full autonomy, larger projects
• Week 12: 90-day review with manager (formal feedback)
• Week 13+: Transition to regular performance cycle

Stakeholders:

• Leadership (skip-level, org leaders)
• Hiring panel (feedback loop for interview process)

Risks:

• Not meeting bar → Mitigation: Early intervention (week 4, 8 checkpoints)
• Burnout from over-achievement → Mitigation: Sustainable pace expectations
• Lack of feedback → Mitigation: Structured checkpoints

Level-Specific Customization

Junior Engineer (L3)

• 30 days: Focus on setup, learning codebase, small tickets
• 60 days: Ship 1 feature with heavy guidance
• 90 days: Independently ship features, minimal guidance

Mid Engineer (L4)

• 30 days: Setup + small features independently
• 60 days: Own medium features, some tech lead support
• 90 days: Fully autonomous, begin mentoring juniors

Senior Engineer (L5)

• 30 days: Quick ramp, already contributing meaningfully
• 60 days: Leading features, influencing technical direction
• 90 days: Driving initiatives, mentoring team, improving processes

Staff+ Engineer (L6+)

• 30 days: Context gathering, relationship building
• 60 days: Proposing strategic initiatives, cross-team influence
• 90 days: Executing on strategic vision, org-level impact

Output Template

{
  "new_hire": {
    "name": "string",
    "role": "string",
    "level": "string",
    "start_date": "YYYY-MM-DD",
    "manager": "string",
    "onboarding_buddy": "string"
  },
  "plan_30_days": {
    "goals": ["array of strings"],
    "outcomes": ["array of measurable outcomes"],
    "activities": [
      {
        "week": 1,
        "focus": "string",
        "deliverables": ["array"]
      }
    ],
    "stakeholders": [
      {
        "name": "string",
        "role": "string",
        "interaction": "1:1|meeting|shadowing"
      }
    ],
    "risks": [
      {
        "risk": "string",
        "mitigation": "string"
      }
    ]
  },
  "plan_60_days": { /* similar structure */ },
  "plan_90_days": { /* similar structure */ },
  "checkpoints": [
    {
      "day": 7,
      "type": "informal",
      "focus": "Setup complete? Blockers?"
    },
    {
      "day": 30,
      "type": "formal",
      "focus": "Foundation laid? Ready for more ownership?"
    },
    {
      "day": 60,
      "type": "formal",
      "focus": "Contributing well? Feedback?"
    },
    {
      "day": 90,
      "type": "formal",
      "focus": "Performance review, probation decision"
    }
  ],
  "success_criteria": {
    "technical": "string - level-appropriate technical performance",
    "collaboration": "string - working well with team",
    "ownership": "string - taking initiative",
    "growth": "string - learning and adapting"
  }
}

Using Supporting Resources

Templates

• templates/30-60-90-template.json - Complete plan schema by level
• templates/stakeholder-map.md - Key relationships to build
• templates/checkpoint-agenda.md - Checkpoint meeting template

References

• references/onboarding-best-practices.md - Research-backed approaches
• references/remote-onboarding.md - Remote-specific strategies

Scripts

• scripts/validate-plan.py - Check plan completeness, measurability
• scripts/generate-calendar.py - Create checkpoint calendar invites

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Progressive Disclosure: Detailed onboarding best practices, remote strategies, and role-level expectations in references/.