Cost math
- US senior backend (SF, NYC, Seattle): $180–$230k salary + 25–30% benefits + ~$15k tooling/space = ~$245–$310k loaded
- EU nearshore senior (Poland, Hungary, Romania): $60–$95/hr × ~1,800 productive hours = ~$110–$170k all-in
- Delta: roughly $100–$170k per senior per year, before factoring management overhead
When replacement works
- Greenfield projects with modern stacks (TypeScript, Go, Rust)
- Async-first teams already doing GitHub-driven workflows and written specs
- Product teams that document decisions in tickets and RFCs, not hallway conversations
- Engagements over 6 months where the nearshore engineer has time to absorb context
When it doesn't
- Codebases that require months of tacit knowledge transfer with no documentation
- Heavily regulated domains where on-site stakeholder presence is required
- Hardware-integration or lab-attached work
- Teams where the senior is also the de-facto on-call escalation point — replacing them is a fire drill, not a hiring decision
Structuring a transition
Run a 4–6 week paid trial overlap between the departing senior and the nearshore replacement. Document everything the in-house person knows that is not in the wiki. Pair on the most-changed files in the last 90 days. Plan for a 2–3 month productivity ramp before the nearshore engineer is at parity.
Example from HighCircl's network
A Series B fintech replaced two San Francisco staff engineers with three nearshore seniors from Romania and Poland over 4 months. Total cash savings in year one were around $310k. The trade-off: weekly product-design sessions moved to recorded async video, and the engineering lead added 2 hours per week of written context for the nearshore team.
