Senior Fullstack Engineer (AI-assisted development)

Location: Remote; employment in Armenia or Kazakhstan, or contractor arrangement through an individual entrepreneur (IE).

Company

Altegio is a platform for service businesses to manage schedules, clients, staff, payments, and online bookings, processing thousands of bookings per minute across Brazil and Europe.

What you will do

• Own full-stack tasks end to end, clarifying requirements with the CTO and product team, exploring code and data, and selecting solutions without detailed specifications.
• Influence product decisions by analyzing user journeys and feedback while balancing UX, consistency, and implementation costs.
• Define acceptance criteria, testing and rollback plans, automated tests, and coverage for key and edge cases.
• Build and safely modify features across the UI, backend, and database, shipping small merge requests behind feature flags.
• Delegate work to coding agents, provide context, and verify generated code, tests, and results.
• Review colleagues’ changes and improve shared skills, agent workflows, and automated checks; upcoming areas include a public API, MCP server, marketplace, plugins, embeddable modules, and payments.

Requirements

• 3–6 years of commercial development experience.
• Commercial experience with PHP and Vue, React, or a similar frontend framework.
• Hands-on experience using coding agents in real-world projects.
• Strong fundamentals in transactions and concurrency, idempotency, time zones, access control and data ownership, N+1 queries, and tables containing millions of rows; these topics are assessed during the technical interview.
• Ability to identify risks, flag blockers, and propose solutions.
• English proficiency at B1 level or above.

Nice to have

• Experience with payments, webhooks, OAuth, and public APIs.
• Experience with high-load systems and MySQL, Redis, RabbitMQ, or ClickHouse.
• Hands-on experience with Sentry, Grafana, Kubernetes, CI/CD, and gradual rollouts.
• Experience building custom skills, coding agents, or MCP servers used by a team.

Culture & Benefits

• Fully remote work.
• Competitive, market-aligned compensation.
• Product-scale engineering with high traffic, a large customer base, and complex business logic.
• Real ownership, minimal bureaucracy, direct interaction with C-level leadership, and involvement in product decisions.
• Code reviews, knowledge sharing, and open technical discussions.
• Choice of equipment: MacBook, Mac mini, Lenovo, or Dell.

Hiring process

• Recruiter screening lasting 30 minutes.
• Technical interview in two parts: review an engineering solution and a small full-stack pull request without AI, then solve a task with a preferred coding agent and discuss the workflow and validation process.
• Product deep dive and leadership meeting involving an ambiguous problem and discussion of decision-making.