Senior Full Stack Engineer

Who you are

• 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 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
• Strong frontend experience building complex, stateful, real-time UIs in React/TypeScript — live-updating multi-pane interfaces, collaborative editors, or comparable dashboards
• 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
• Demonstrated ability to scope ambiguous, 0-to-1 product requirements into a technical plan and commit to and hit delivery dates
• Experience building validation and guard logic that gracefully handles edge cases across diverse customer configurations — languages, device counts, network conditions
• US citizenship and residence in the United States
• ---Strong Plus---
• Experience with speech/audio pipelines: diarization, streaming speech recognition, or audio stream multiplexing
• Prior experience building CAT tools, translation memory/termbase systems, or other linguist-facing review interfaces
• Familiarity with localization/TMS workflows: XLIFF, Translation Memory, MT vs. human translation pipelines
• Experience with cross-platform, embedded, or mobile-adjacent architectures, and adapting shared services across device and web form factors
• Experience shipping in regulated or high-security customer environments
• Hands-on Microsoft Teams app or bot development specifically (Teams Toolkit, Bot Framework, Azure Communication Services, Microsoft Graph)
• 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

What the job involves

• As the senior engineer on the Create team driving this Converse expansion, you will drive technical strategy for both the backend translation service and the customer-facing surfaces built on top of it, while working directly with Product, Design, and early design partners — architecting the low-latency streaming pipeline, building the live meeting experience and interpreter workbench, and turning ambiguous 0-to-1 requirements into a scoped plan you commit to and ship
• You will partner with the engineers already building Converse's device/mobile experience to extend a shared translation-service architecture into new platforms and form factors, help define engineering standards as the Create team grows, and make the calls that determine whether this expansion scales cleanly from a prototype into a production product used in live, multilingual meetings
• Own architecture and technical roadmap for this Converse expansion, spanning the central real-time translation service and the customer-facing surfaces built on it (live meeting UI, interpreter workbench)
• Architect and build the low-latency, N-way translation pipeline: per-participant audio ingestion, diarization, streaming ASR, MT orchestration, and result fan-out to every language in the meeting
• Build the live meeting experience — bot/agent participant, meeting side panel, and on-stage caption surfaces — integrating with the host meeting platform's SDK, extension framework, and APIs
• Build the interpreter workbench: a real-time, streaming adaptation of Lilt's CAT tool with a live segment queue, low-confidence flagging, TM/TB matches, AI-Review/AI-QA signals, and submit-to-broadcast corrections
• Design the event-driven correction and broadcast system — routing flagged segments to the correct on-call interpreter by language, pausing the affected translation, and isolating each correction to a single language
• Partner with Product and Design to turn PRD requirements (JTBD, feature specs) into technical designs, and commit to and hit delivery dates on a brand-new product surface
• Collaborate with the engineers already building Converse's device/mobile experience to extend a shared translation-service architecture (per-participant declared spoken/received languages) into new multi-device and platform form factors
• Establish testing, CI/CD, and release practices (GitHub Actions, automated e2e tests) for the new product line
• Help recruit, mentor, and set engineering standards as headcount scales on this initiative

Benefits

• Compensation: Meaningful equity, 401(k) matching, and flexible time off plus company holidays
• Medical Benefits: Employees receive coverage of medical, dental, and vision insurance, plus FSA/DFSA, HSA, and Commuter benefits. In addition, LILT pays for basic life insurance, short-term disability, and long-term disability
• Paid parental leave is provided after 6 months
• Monthly lifestyle benefit stipend via the Fringe platform to allow employees to customize benefits to their lifestyle