Job Title: Senior JavaScript Developer
Location: Remote
Employment Type: Full-time
Job Summary
- We are building the next generation of AI-powered developer tools, and we need a Senior JavaScript Developer who can bridge the gap between production-grade code and model training data.
Responsibilities
- Design and execute semantic annotation pipelines for JavaScript/TypeScript code snippets, including function logic, error handling, async patterns, and security flows.
- Collaborate with ML engineers to define annotation schemas that capture execution traces, data flow, and edge cases in real-world JS applications.
- Build internal tooling (Node.js, React) to accelerate annotation QA, versioning, and active learning loops.
- Review and refine model-generated JS code- identify hallucinations, inefficiencies, and style violations.
- Contribute to synthetic data generation by writing adversarial examples that stress-test model reasoning.
- Mentor junior annotators on JS best practices and advanced language features (closures, proxies, generators, etc.).
Required Qualifications
- 6+ years of professional software development experience, with at least 5 years heavily focused on modern JavaScript/TypeScript.
- Deep understanding of ASTs, scope chains, event loop, and memory management in v8.
- Experience building or fine-tuning AI/ML models (LLMs, code-generation models, or NLP systems).
- Hands-on with annotation tools (Label Studio, Prodigy, or custom pipelines) and versioned datasets.
- Proven experience with AWS/ Azure/GCP (EC2, Lambda, S3, RDS). Strong working knowledge of Docker, Kubernetes (K8s), and Infrastructure-as-Code (Terraform/CDK).
- Strong grasp of test-driven development, static analysis, and performance profiling.
- Ability to write clear, structured documentation for guidelines and taxonomies.
- Exceptional written and verbal communication. Ability to influence stakeholders, write clear architectural decision records (ADRs).
Salary
N700,000 – N1,000,000 per month.
Application Closing Date
30th September, 2026.
Interested and qualified candidates should send their CV and cover letter to: cvs@odixcityconsulting.com.ng using the job title as the subject of the mail.