Lead Node.js Developer

Mito Group

. Develop high-quality software in a fast-paced business environment .

Posted 11/12/2026full-timeBudapest • HungarySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing high-quality software using Node.js and Fastify, with a strong focus on designing and managing high-load API gateways. Possesses a security-focused mindset and experience with PCI/DSS compliance, while effectively collaborating with stakeholders and mentoring team members.

Highest-signal resume keywords

Node.js DevelopmentFastify FrameworkHigh-Load API Gateway ManagementAWS Ecosystem DeploymentPCI/DSS Compliance

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Node.jsFastifyAPI Gateway DesignMicroservices ArchitectureDistributed Server-Side ServicesGitHubDockerOOPJSONAgile Methodology

Soft Skills

MentoringStakeholder CommunicationProblem ManagementCollaborationTechnical Excellence

Tools & Technologies

AWS API GatewayKongCI/CD PipelineDevOps PracticesSecure Coding Standards

Certifications & Qualifications

OWASP Certification

Industry Keywords

PCI/DSS ComplianceSOA ConceptsEnterprise-Grade ApplicationsHigh-Load SystemsSAFe Principles

Tech Stack

Tools & technologies

AWSDockerJavaScriptMicroservicesNode.js.NET

About the role

Key responsibilities & impact

Develop high-quality software in a fast-paced business environment
Use Node.js and Fastify to deliver core functionality
Design and maintain high-load API gateways
Mentor developers and foster technical excellence within the team
Align technical architecture with business objectives through regular stakeholder communication
Participate in incident resolution and problem management
Participate in technical design and change management
Contribute to architectural and design decisions
Estimate development and delivery times from requirements, specifications, and technical designs
Write unit and integration tests and participate in end-to-end test development
Collaborate with the in-house DevOps team to maintain a CI/CD pipeline
Ensure PCI/DSS compliance for delivered code
Discuss technical solutions with other developers
Participate in peer code reviews

Requirements

What you’ll need

At least 6+ years of experience with Node.js
Deep knowledge of Fastify, microservices, and enterprise-grade large-scale applications
Hands-on experience designing and managing high-load API gateways; Kong highly preferred, AWS API Gateway acceptable
Experience optimizing high-load, distributed server-side services
Experience deploying, operating, and scaling applications within the AWS ecosystem
Version control experience with GitHub
Containerization experience using Docker
Security-focused mindset and experience with secure coding standards
Understanding of business logic, data access layers, SOA concepts, microservices architecture, OOP, and JSON
Decent level of English; documentation and formal communication are in English
Familiarity with the .NET ecosystem and ability to read and understand C# code
Hands-on experience with PCI/DSS or an OWASP certification
Familiarity with Agile methodology and SAFe principles

Benefits

Comp & perks

Hybrid work and flexible location; work from home when needed and work from abroad for a while with stable internet
MacBooks
Great coffee and fresh fruit
Well-equipped downtown Budapest office
Personal benefits budget for sports, education, or commuting
Annual routine and preventive health screenings
Up to 5 extra paid days off per year through the Level Up loyalty system
Conference attendance opportunities
Coaching and hackathons
Expertise-sharing opportunities
Native English coach supporting professional communication
Company yoga sessions every Tuesday and Thursday
Structured onboarding process with a dedicated buddy
Dog-friendly workplace
Office parties
Family-friendly events