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# Senior/Principal JavaScript Engineer

- **Company:** OLEK GLOBAL, LLC
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Software as a Service, Software Quality, Relational Databases, DevOps, PostgreSQL, MongoDB, MySQL, Node.Js, NoSQL, Object-Relational Mapping, Software Maintenance, Search Technologies, TypeScript, ReactJS, Large Language Models, Vue.js, Front End Software Development, NestJS
- **Published:** August 24, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/pelcdypvjk

## About the Role

* 9+ years of full-stack engineering experience, including leading the delivery of complex systems
 * Be fluent in English communication skills (at least C1 level)
 * Demonstrated success building and shipping production-grade applications in SaaS, B2B, FinTech, or similar environments
 * Hands-on experience developing and integrating AI-powered features such as LLM-based automation, classification, document processing, or workflow enhancements
 * Working knowledge of AI development and evaluation tools, including vector search, embeddings, prompt frameworks, or AI-assisted development tools
 * Strong proficiency in JavaScript and TypeScript
 * Solid experience with modern backend technologies (Node.js; NestJS is a plus) and frontend frameworks (React or Vue)
 * Strong experience with relational databases (Postgres or MySQL), NoSQL databases (MongoDB), and ORMs such as TypeORM and Mongoose
 * Experience designing scalable architectures, APIs, and services with strong testing and observability practices
 * Good understanding of cloud platforms (AWS preferred), CI/CD pipelines, and DevOps fundamentals
 * Excellent communication skills and experience working closely with Product, Design, and QA teams
 * A proven history of mentoring engineers and improving engineering quality across teams, * Experience in FinTech, particularly in domains such as accounting or bookkeeping

## Description

As a Principal JavaScript Engineer, you will work closely with Product, Design, and Engineering leadership to set technical direction, architect robust AI-first solutions, and deliver reliable, maintainable software. You will also play an important role in integrating AI in a thoughtful and pragmatic way across our products and internal workflows., * Design and deliver high-quality, secure, and scalable engineering solutions

 * Apply AI in practical and impactful ways to automate and enhance customer workflows
 * Build and operate systems capable of supporting advanced AI workloads at scale
 * Uphold strong engineering standards, including testing, code quality, and long-term maintainability
 * Communicate clearly and collaborate across teams to ensure alignment and predictable delivery
 * Provide mentorship and technical leadership, helping elevate the broader engineering organization


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