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Kozak Agency

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Full-Stack Engineers (React/Node)

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Summary

Remote contract (6 months, extendable) for senior engineers to maintain, modernize and operate a legacy backend platform: building Node.js/TypeScript/NestJS microservices on AWS (EventBridge, SQS, PostgreSQL), plus DevOps, monitoring, troubleshooting and some React full-stack tasks. EU-based, English-speaking team of 5.

Main Responsibilities – Engineering Team

Maintenance and further development of existing platform services
Development of new backend features and services
Backend development with TypeScript, Node.js and NestJS
Development and operation of AWS-based services
Working with microservice and event-driven architectures
Taking ownership of existing production services
Analysis and reverse engineering of existing applications
Working with legacy code and historically grown systems
Production troubleshooting and incident resolution
Ensuring stability and reliability of production applications
DevOps and operations activities
Monitoring, logging and observability
Technical modernization and reduction of technical debt
Performance optimization
Proactive identification of architectural and operational improvements
Selected frontend/full-stack tasks using React

Critical Must-Haves – Engineering Team
TypeScript
Node.js
NestJS
AWS
Microservices
Event-driven architectures
AWS EventBridge
AWS SQS
PostgreSQL
Production cloud applications
Legacy systems
Reverse engineering
Modernization of existing applications
DevOps
Operations
Incident Management
Production troubleshooting
Monitoring
Observability
Experience taking ownership of existing production services
High seniority level across the team
React - required within the team: at least 1–2 engineers must be able to cover React-based full-stack tasks.

This is primarily a backend/platform project, not a classical full-stack project.

Start: mid-October/November
Duration: 6 months + possible extension
Workload: By agreement, 120–160 hours/month per resource, depending on the proposed profile and team composition
Team size: 4 developers + 1 Engineering Manager, 5 people in total
Location: EU (remote) !!!
Language: English

Skills

See also

Full-Stack jobs by country — openings, pay and top skills →

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