Senior Full Stack Developer

Careers at EverWorker

Senior Full Stack Developer

Bucharest, Romania or remote

About The Role

As a Senior Full Stack Developer, you will architect and build high-performance, scalable web applications using React and Meteor. You’ll drive best practices across the stack—from data modeling in MongoDB to server-side logic in Node.js. TypeScript as a requirement for most of the applications and services.

You’ll also help shape our AI/ML integration in our AI first products, leveraging LLMs, RAG-based memory, and graph/vector databases to power next-generation and leading innovative features. Keeping ontop of current technologies and releases in this fast moving space is a must, and being able to quickly pivot and multitask are a must. Being able to own the whole task and work cross-project is expected of a Sr. level developer.

Use of AI coding tools is encouraged.

Key Responsibilities

• Feature Development: Lead end-to-end design and implementation of complex features in React and Meteor, python, Node JS, Typescript, and GO, ensuring clean abstractions and modularity.
• Architecture &
  • Patterns: Experience with Meteor client/server architecture, including pub/sub and general familiarity with best practices.

• Data Layer: Model and optimize MongoDB, implement strategies and sanitization, and integrate vector stores or graph databases for semantic search and RAG workflows. Understanding of Milvus and mesh databases preferred.
• AI/ML Integration: Integrations with LLM APIs, embedding pipelines, and RAG memory layers
  • Understanding local embedders, how tokenization, and chunking works is needed for all sorts of internal and external projects that implement AI first software.

• API &
  • Backend Services: Develop RESTful endpoints and plugins in Node.js/TypeScript, python, GO, and Meteor.

• PRs, Testing &
  • Quality: Be able to implement unit, integration, and UI tests (Jest and custom). Understand linting and participate in PR reviews for the company.

Required Qualifications

• Bachelor's degree in computer science, Engineering, or related field
• 5 years full-stack web development experience, with at least 3 years on React and Meteor
• Strong proficiency with MongoDB data modeling, indexing, and aggregation pipelines.

  Experience with Milvus and graph databases a plus.

• Solid coding skills in JavaScript/TypeScript, Node.js, Python, and Bash, Meteor, and REACT.
• Hands-on experience with LLMs, RAG architectures, and familiarity with vector or graph databases
• Expertise in browser and IDE debugging workflows (Chrome DevTools, VS Code)
• Comfortable setting up and maintaining Git workflows, branching models, and CI in GitHub Actions or similar
• Proven track record of delivering production-grade features autonomously

Preferred Qualifications

• Prior experience with AWS (Lambda, API Gateway, S3, EC2) or other cloud platforms
• Familiarity with containerization (Docker) and Kubernetes for dev/test environments
• Understanding of CI/CD best practices and IaC (Terraform, Pulumi)

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