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e2finc

e2finc

Full Stack Software Engineer

Company

e2finc

Role

Full Stack Software Engineer

Location

Independent Contractor

Job type

-

Found on Mokaru

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Salary

Not disclosed by employer

Job description

About the Role

We are looking for a Full Stack Software Engineer with 3+ years of professional experience to join our engineering team. This role will focus on building and improving our internal annotation and project management platform used for AI training data, localization workflows, financial operations, and customer-specific annotation projects.

The ideal candidate is strong in React, TypeScript, and backend API development , comfortable working in a large codebase, and excited to work in a fast-moving, highly collaborative engineering team.

What We’re Looking For

We are looking for someone who can contribute quickly, communicate clearly, and help us build reliable, scalable tools for complex annotation and operational workflows. This person should be comfortable balancing speed with quality and should enjoy working closely with a motivated, high-energy team.

Key Responsibilities

Build and maintain frontend features using React, TypeScript, Material UI, Redux Toolkit, and Vite

Develop and enhance backend APIs using Node.js, NestJS, TypeScript, TypeORM, and MySQL

Work on platform features across annotation workflows, user management, project operations, finance, reporting, and integrations

Collaborate with product, operations, and engineering teams to translate business needs into scalable software

Write clean, maintainable, tested code using unit, integration, and E2E testing practices

Participate in code reviews, sprint planning, architecture discussions, and production support

Improve performance, reliability, observability, and user experience across the platform

Required Skills

3+ years of professional software engineering experience

Strong experience with TypeScript and modern JavaScript development

Frontend experience with React, hooks, component-based architecture, Material UI, Redux Toolkit, React Router, Formik/Yup, Axios

Backend experience with Node.js, NestJS, REST APIs, TypeORM, MySQL, validation, authentication, and API documentation

Experience with testing tools such as Jest, React Testing Library, Cypress, Supertest, or Testcontainers

Familiarity with Git-based workflows , code reviews, and Agile/Scrum development

Comfortable working with large, modular applications and complex business logic

Nice to Have

Experience with AWS services such as S3, SQS, SNS, Lambda, Cognito, RDS, ECR, or EKS

Familiarity with Docker, Kubernetes, Helm, CI/CD pipelines, SonarQube, and Datadog

Experience with Recharts, SurveyJS, or rich data-heavy UIs

Exposure to LLM/AI integrations such as OpenAI, Google GenAI, AWS Bedrock, or LangChain

Experience with localization, data annotation, workflow systems, vendor management, invoicing, or financial platforms

Python experience for scripting, automation, or data processing

Soft Skills

Strong written and verbal communication

Ability to work independently and take ownership of features

Collaborative mindset with openness to feedback and code reviews

Strong problem-solving skills in complex, fast-changing product areas

Attention to detail around data quality, security, performance, and UX

Ability to learn quickly and adapt to new tools, integrations, and customer requirements

Comfortable working in a dynamic, highly energetic team environment

Tech Stack

Frontend: React, TypeScript, Material UI, Redux Toolkit, Vite, Axios, Cypress

Backend: Node.js, NestJS, TypeScript, TypeORM, MySQL, Swagger/OpenAPI, Jest, Supertest

Infrastructure: Docker, Kubernetes/EKS, Helm, AWS, CI/CD

Observability & Quality: Datadog, ESLint, Prettier

Integrations: OpenAI, Google GenAI, AWS Bedrock, SendGrid, Google APIs, QuickBooks, XTRF

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