Software Engineer Onboarding — Mid Level (90-Day)

A 90-day onboarding plan for mid-level software engineers covering all four SHRM Cs: Compliance (I-9/E-Verify Day 1, W-4/state withholding, IP assignment agreement, security awareness training, SOC 2 acceptable-use policy); Clarification (dev environment setup, codebase architecture walkthrough, coding standards, CI/CD pipeline orientation, on-call rotation expectations, sprint/agile ceremonies); Culture (engineering values, blameless postmortem culture, documentation norms, open-source contribution policy, team rituals); and Connection (buddy/mentor pairing, 1:1 cadence with engineering manager, cross-functional introductions, first PR review with senior engineer). Milestones are anchored to three 30-day gates: Day 30 — environment fully operational and first commit merged; Day 60 — first feature shipped end-to-end with tests; Day 90 — first independent ownership of a module or service area.

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