Note: The job is a remote job and is open to candidates in USA. Qohash is building a zero-copy data security control layer to help enterprises adopt AI safely. The Senior Full Stack Developer will build and operate Qostodian’s AI data security analyst, develop governed MCP tools and agentic customer scenarios, contribute to AI-first frontend experiences, and establish quality and production-monitoring practices.
Responsibilities
- Build the AI data security analyst embedded in Qostodian, owning the agent runtime end to end: orchestration on the Claude Agent SDK, conversation memory and rehydration, streaming reasoning and tool activity, and prompt lifecycle
- Design and ship the MCP tool layer: exposing Qostodian's search, statistics, workflow, and remediation services as governed, well-typed tools, and translating natural language into queries and platform actions
- Ship agentic scenarios that customers run against their own data: insider-risk investigations, lost or stolen device impact reports, risk-reduction plans, including the generated artifacts and reports that come out of them
- Contribute to the front end, building a new kind of UI experience in the AI-first paradigm, where the conversation, not the dashboard, is the primary surface: streaming reasoning traces, generated visualizations, exports, and prompt interruption
- Extend the skills architecture: author first-party skills, and build the substrate that lets customers create, enable, and govern their own
- Treat quality as an engineering problem: eval suites and golden conversation sets that gate prompt, tool, and skill changes the way tests gate code. Write clean, well-documented, maintainable code that the next person can extend
- Own a production system end-to-end: deploy it, instrument it, and keep it healthy, monitoring and alerting on agent failures, tool errors, latency and cost, and evaluating real production sessions to catch quality drift before customers feel it
- Participate in code reviews and knowledge-sharing: use AI coding tools aggressively to ship in days rather than months, and help set the bar for an AI-first engineering culture at Qohash
Skills
- 7+ years of experience in software development in Python
- Hands-on experience with owning and developing an AI agent solution in a live production environment (e.g. Claude Agent SDK or Langchain)
- Familiarity with AI-driven coding tools (e.g. Claude Code or equivalent)
- A proven ability to work independently, solve problems quickly, and deliver outcomes at speed
- A working proficiency in English is required for this position based on the company's operational requirements
- Bilingual (English/French)
- Based in Quebec (preferred)
- Experience with AWS
- Contributions to open-source projects or a personal coding portfolio
- Cybersecurity awareness or best-practice knowledge
- Startup environment experience
Benefits
- Up to six weeks of paid time off annually
- Comprehensive health benefits
- Life insurance
- Short- and long-term disability
- Paramedical and telemedicine services
- Health Spending Account (HSA)
Company Overview