# Software Engineer 3

**Company:** [MongoDB](https://hotfix.jobs/companies/mongodb)
**Location:** Remote
**Role:** Fullstack Engineering
**Salary:** CA$108k – CA$149k/yr
**Experience:** 2+ years
**Skills:** Go, Python, JavaScript, TypeScript, Java, C#, GitHub Actions, Mcp, Static Analysis, CI/CD, API Design, Llm Evaluation
**Posted:** 2026-08-12

> Builds developer tooling, evaluation systems, quality gates, and observability infrastructure for agent skills. The role requires production software experience, strong testing and API fundamentals, and familiarity with CLIs, CI/CD, static analysis, or applied AI systems.

## Job Description

## Responsibilities
- Build and maintain agent skills and the infrastructure to validate, evaluate, publish, and maintain them.
- Design evaluation datasets and workflows that compare agent behavior against a baseline and produce actionable quality signals.
- Build agent metrics and observability for skill selection and routing, success and failure outcomes, tool calls, latency, and token usage.
- Design safety and quality gates for agent-authored content, including rule packs, static analysis, confidence thresholds, structured verdicts, and bounded suppression.
- Create CLIs, libraries, and MCP integrations for local development and CI adoption.
- Integrate tooling into GitHub Actions and other CI workflows, including secrets, annotations, exit codes, and artifacts.
- Build code-generation quality checks, including anti-pattern catalogs and linting for AI-generated MongoDB code.
- Investigate nondeterministic results, false positives, and unsafe generated guidance, and turn recurring failures into reusable improvements.
- Collaborate with engineers, security partners, and product teams; communicate trade-offs, risks, and ownership across teams.

## Requirements
- 2+ years of experience building production software, developer tools, internal platforms, or automation systems.
- Strong software engineering fundamentals in API design, testing, error handling, and maintainability.
- Experience building CLIs, libraries, test infrastructure, static analysis, or CI/CD workflows.
- Ability to design systems that are usable by developers and reliable in automation.
- Experience reasoning about correctness and safety with ambiguous input, nondeterministic output, false positives, or untrusted content.
- Comfort in an evolving R&D environment where abstractions emerge through prototypes and feedback.
- Strong written and verbal communication, including explaining technical trade-offs and aligning stakeholders.

## Nice to Have
- Experience with agentic systems, LLM applications, prompt or rubric-based evaluation, or AI-assisted development.
- Experience building evaluation harnesses, benchmark datasets, quality metrics, LLM-as-judge workflows, or human-review tooling.
- Experience with Go, Python, JavaScript/TypeScript, Java, or C#.
- Experience with GitHub Actions security, secret handling, static rule engines, or policy enforcement.
- Experience moving prototypes into production.

## Compensation and Benefits
- Base salary range in Canada: **$108,000–$149,000 CAD**.
- Benefits may include equity, employee stock purchase program participation, flexible paid time off, 20 weeks of fully paid gender-neutral parental leave, fertility and adoption assistance, RRSP with employer match, mental health counseling, backup child and elder care, and health, dental, and vision benefits.

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**Apply:** https://hotfix.jobs/jobs/40288b31-e52f-4273-b1a8-cd3a89f34654
**Canonical:** https://hotfix.jobs/jobs/40288b31-e52f-4273-b1a8-cd3a89f34654