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Bridge is a stablecoin infrastructure company that provides APIs enabling businesses to store, move, and accept payments in stablecoins across different blockchains and currencies. It was acquired by Stripe in 2025 to expand its cryptocurrency and global payments capabilities.

2 interview notes · updated Jul 2026

Bridge·Software Engineer·Onsite - System Design / Architecture

Jul 2026
Bridge SWE interview that was basically one big system design question dressed up as a coding problem. They wanted a full Minesweeper implementation plus a follow-up on scaling it to huge sparse boards, which honestly felt like two separate interviews crammed into one.
  • Design and implement a Minesweeper game: initialize an m×n board with k randomly placed bombs, implement a printBoard() method that returns the current player-visible state, and implement a click(r, c) method that handles bomb hits, cell reveals, and BFS/DFS flood fill for zero-adjacent-bomb regions. Discuss data structures, algorithms, and time/space complexity, and provide test cases.
  • For very large, sparse boards (huge m and n, but very few bombs), how would you optimize click() to be fast and memory-efficient? Walk through options like lazy board generation, sparse data structures, on-demand neighbor counting, caching, and pruning, and discuss the trade-offs.

“I started with a 2D array for the board and a separate boolean grid for revealed state, which felt clean at first.”

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Bridge·Software Engineer·Technical Phone Screen

May 2026
Did a technical screen for a Software Engineer role at Bridge with two coding problems back to back. Nothing too wild but the second one had some depth to it if you actually thought about the lazy vs eager tradeoffs.
  • Given a string representing an absolute Unix file path, implement a function to return its canonical (normalized) form. Handle '.', '..', consecutive slashes, and trailing slashes correctly. Walk through your algorithm and give time and space complexity.
  • Design an iterator for a nested list structure that can contain integers or other nested lists at arbitrary depth. Implement hasNext() and next() using a lazy stack-based approach, and optionally discuss an eager flattening alternative. Compare the tradeoffs between both designs.

“Stack-based solution, pretty standard.”

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