Senior Full Stack Engineer

Join Lilt, a leading AI-powered language translation platform, as a Senior Full Stack Engineer. In this role, you will drive the technical strategy for the Converse expansion, architecting the low-latency streaming pipeline and building the live meeting experience and interpreter workbench. You will collaborate with Product, Design, and early design partners, and establish testing, CI/CD, and release practices for the new product line. This position offers competitive compensation, medical benefits, and a monthly lifestyle benefit stipend.

---Strong Plus---

USD 132,800 - 166,000

Responsibilities

• Architect and build the low-latency, N-way translation pipeline, including per-participant audio ingestion, diarization, streaming ASR, MT orchestration, and result fan-out to every language in the meeting.
• Collaborate with Product and Design to turn PRD requirements into technical designs, and commit to and hit delivery dates on a brand-new product surface.
• Establish testing, CI/CD, and release practices for the new product line, and help recruit, mentor, and set engineering standards as headcount scales on this initiative.
• Experience with cross-platform, embedded, or mobile-adjacent architectures, and adapting shared services across device and web form factors
• Prior experience building CAT tools, translation memory/termbase systems, or other linguist-facing review interfaces
• Experience with speech/audio pipelines: diarization, streaming speech recognition, or audio stream multiplexing
• Demonstrated ability to scope ambiguous, 0-to-1 product requirements into a technical plan and commit to and hit delivery dates
• Familiarity with localization/TMS workflows: XLIFF, Translation Memory, MT vs. human translation pipelines
• Experience mentoring engineers and setting technical standards for a new product line
• Familiarity with post-meeting asset generation: transcript export formats (TXT/WebVTT/JSON), recording citations, and summarization

Requirements

• Experience shipping in regulated or high-security customer environments
• Strong backend experience spanning REST API endpoints and real-time/streaming systems: WebSockets, gRPC, or comparable low-latency transport; event-driven architectures; message routing and state management across many concurrent sessions
• Experience integrating with third-party platform SDKs or extension frameworks (Slack, Zoom, or similar meeting/collaboration platforms) — bots, side panels, webhooks, and platform APIs
• Comfort working with or directly adjacent to ASR/MT/NLP pipelines, or other latency-sensitive ML-in-the-loop systems

US citizenship and residence in the United States

• 5+ years of professional full-stack software engineering experience, with a track record of owning complex, real-time or streaming systems end-to-end — architecture, implementation, deployment, and production reliability
• Strong frontend experience building complex, stateful, real-time UIs in React/TypeScript — live-updating multi-pane interfaces, collaborative editors, or comparable dashboards
• Experience building validation and guard logic that gracefully handles edge cases across diverse customer configurations — languages, device counts, network conditions

Preferred

• Hands-on Microsoft Teams app or bot development specifically (Teams Toolkit, Bot Framework, Azure Communication Services, Microsoft Graph)