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Senior Fullstack Engineer

Job Overview

Location

Egypt

Job Type

Contract

Category

Software Engineering

Date Posted

June 4, 2026

Full Job Description

đź“‹ Description

  • • Design and ship production features on a Ruby on Rails API (Rails 7+) including authentication flows, background jobs via Sidekiq, and PostgreSQL schema design.
  • • Maintain and improve API contracts using OpenAPI or JSON:API standards consumed by single-page applications.
  • • Write and enforce test coverage using RSpec to ensure high reliability across services.
  • • Build and maintain React applications using hooks and modern state management patterns with TypeScript.
  • • Work with modern JavaScript toolchains including Bun, Vite, and esbuild to optimize frontend performance and tooling.
  • • Contribute to and evolve a shared component library and design system used across multiple frontend applications.
  • • Develop and maintain Python (3.11+) ETL pipelines, Snowflake transformations, and external API integrations.
  • • Orchestrate data workflows in production using Dagster or Airflow to manage complex data pipelines.
  • • Partner with Data Science and ML Engineering teams to productionize machine learning models into reliable, observable inference services.
  • • Maintain container-based local development environments using Docker and Docker Compose.
  • • Operate within an AWS environment including ECS Fargate, Lambda, EventBridge, and S3, supporting infrastructure managed via Terraform.
  • • Own and improve CI/CD pipelines using GitHub Actions and drive pragmatic observability across services.
  • • Establish and enforce engineering best practices across a 20+ repository workspace covering testing, CI/CD, observability, and code review standards.
  • • Improve developer experience through local dev tooling, Makefile automation, and comprehensive onboarding documentation.
  • • Lead code reviews and PR triage, driving improvements in type safety, security, and incremental refactoring.
  • • Write clear technical specifications, RFCs, and architecture documentation including agent-readable context files for AI coding agents like Claude Code or Cursor.
  • • Mentor engineers through pairing, documentation, and feedback rather than gatekeeping.
  • • Operate autonomously in a fast-moving, multi-repo codebase alongside AI-assisted development tools.
  • • Apply a bias toward simplicity by removing unnecessary code and abstractions as readily as adding new features.
  • • Make judgment calls on when to standardize across services versus allowing appropriate service-specific opinions.
  • • Work during U.S. business hours (9AM - 5PM EST) to support U.S.-based clients.
  • • Collaborate in a remote-first environment with engineers and AI agents co-developing software in a shared workspace.

🎯 Requirements

  • • 5+ years building production Ruby on Rails APIs (Rails 7+) with deep familiarity with ActiveRecord, Sidekiq, RSpec, JWT/auth flows, and PostgreSQL schema design.
  • • 5+ years building production React applications using hooks and modern state management patterns with TypeScript and modern JS toolchains (Bun, Vite, esbuild).
  • • Production experience with Python (3.11+), Dagster or Airflow, ETL pipelines, Snowflake transformations, and external API integrations.
  • • Hands-on experience with Docker, Docker Compose, AWS (ECS Fargate, Lambda, EventBridge, S3), and infrastructure-as-code via Terraform.
  • • Experience with CI/CD pipelines using GitHub Actions and strong understanding of observability practices.
  • • Proven track record of writing technical specs, RFCs, or architecture documentation in cross-team environments.

🏖️ Benefits

  • • Competitive base compensation of $4,000–$5,000 per month.
  • • Full remote flexibility with no office requirement.
  • • Opportunity to shape engineering culture and practices in a growing, technically ambitious team.
  • • Work at the frontier of AI-assisted software development alongside AI coding agents.

Skills & Technologies

Python
JavaScript
TypeScript
Ruby
React
Full Stack
Senior
Remote

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About Scale Army

Scale Army Careers is a remote-talent marketplace that sources, vets and places top sales, marketing and technical professionals across Latin America and Africa into full-time roles with high-growth U.S. companies. Operating under the same umbrella as Scale Army, the platform pairs candidates with vetted 40-hour-per-week engagements, provides onboarding guidance, monthly check-ins and equipment stipends, and channels consistently strong performers into progressively higher-impact opportunities to build long-term, dollar-based careers.

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