interviewed for a senior frontend SWE role at Salesforce (Lightning Web Components team) in early 2026. here's what the loop looked like.
some context: Salesforce has a massive internal UI framework called Lightning Web Components (LWC). if you're interviewing for teams that work on the platform itself or core CRM frontend, knowing LWC at least conceptually is useful. if you're on a product team (Marketing Cloud, Tableau, etc.) it's less relevant.
the rounds:
phone screen - 45 min, one coding problem. mine was DOM manipulation: given a nested tree of comment nodes, render them with proper indentation. they wanted plain JS, not a framework. recursion + basic DOM API. signals they're watching: can you think in trees, do you write clean readable JS without relying on magic.
onsite (virtual, 4 rounds): frontend system design - design a real-time dashboard that refreshes data every 30 seconds without full page reloads. i talked through WebSockets vs. polling, component architecture, state management, how to handle stale data gracefully. they probed on accessibility considerations (ARIA roles, keyboard nav) which surprised me. know a11y basics. coding round - two problems. first was a React component problem: build a filterable data table that handles edge cases (empty state, loading, error). second was a pure algorithm: find all islands in a 2D grid (BFS/DFS). the algorithm one felt disconnected from frontend but it's there to check raw problem-solving. behavioral - bring specific stories. they asked about a time i had to refactor a large codebase, a time a UI decision i made got pushback from design, and a time i prioritized performance over features. they're looking for maturity and collaboration. hiring manager chat - more about team fit and what i'd want to build.
what i'd say to prep: practice frontend system design more than vanilla Leetcode. they want to see you can think about real web problems (rendering, performance, state, accessibility) not just solve grids. and brush up on core JS: closures, event loop, prototypes. not trivia but conversational fluency.
took about 4 weeks total. got the offer at senior level. base was in the $155-165k range for Bay Area (hybrid).