Sergej Müller

Lead Software Engineer

Fürth, Bayern, Germany
hi@sergej-mueller.com
Sergej Müller

About

Versatile professional with 12 years of team management experience and 6 years in software engineering. Proven track record in delivering high-quality solutions, leading cross-functional teams, and driving business outcomes through technology. Skilled in clean code practices, mentorship, and effective stakeholder communication.

Experience

  • -

    Lead Software Engineer (CTO) @ SevenBrains Tech

    USA - Remote

    Summary:

    • Led all IT development activities and aligned technology strategies with business objectives to integrate AI into small businesses. Fullstack cloud-native development with JS/TS, Python, AWS, and DevOps.

    Responsibilities:

    • Managed comprehensive IT development activities
    • Aligned technology strategies with business objectives
    • Oversaw the design and deployment of cloud-native solutions

    Achievements:

    • Successfully integrated AI into business processes, enhancing operational efficiency
    • AI Integration
    • Cloud Computing
    • DevOps
    • JavaScript
    • TypeScript
    • Python
    • Leadership
    • Strategic Planning
  • -

    Lead Software Engineer @ leomax engineering GmbH

    Cadolzburg, Germany - On-site

    Summary:

    • Headed a team of four engineers to build a collaborative culture while delivering a scalable backend system. Boosted data throughput by 30% through the implementation of efficient REST APIs.

    Responsibilities:

    • Led the engineering team in backend system development
    • Implemented efficient REST API solutions
    • Ensured scalable and maintainable backend architecture

    Achievements:

    • Achieved a 30% improvement in data throughput through targeted optimizations
    • Team Leadership
    • Backend Development
    • REST API Design
    • Scalability
    • Collaboration
    • Data Optimization
  • -

    Full-Stack Software Engineer @ leomax engineering GmbH

    Cadolzburg, Germany - On-site

    Summary:

    • Designed and deployed B2B web applications, mastering backend scalability with Python and crafting user-friendly UIs with Vue3.

    Responsibilities:

    • Developed scalable backend solutions
    • Created intuitive, user-friendly interfaces with Vue3

    Achievements:

    • Successfully launched several high-quality B2B applications
    • Full-Stack Development
    • UI/UX Design
    • Backend Scalability
    • Python
    • Vue.js
    • B2B Solutions
    • Problem Solving
  • -

    Full-Stack Software Engineer @ Freelance

    Worldwide - Remote

    Summary:

    • Developed diverse solutions using Python (Django/DRF, Flask), Vue3, Docker, and various databases. Managed CI/CD pipelines with GitLab and GitHub Actions while handling infrastructure with Terraform.

    Responsibilities:

    • Developed robust solutions across the full stack
    • Implemented CI/CD pipelines and managed cloud infrastructure
    • Integrated various databases including Redis, PostgreSQL, and MongoDB

    Achievements:

    • Maintained 100% client satisfaction and delivered high-performance solutions
    • Backend Frameworks
    • Frontend Development
    • Containerization
    • CI/CD Management
    • Infrastructure Automation
    • Client Communication
    • Adaptability
  • -

    CEO & Co-founder @ Jet-M

    Zaporizhzhia, Ukraine - On-site

    Summary:

    • Grew a marketing firm from scratch to 30 team members, focusing on innovative online strategies and achieving ambitious company goals.

    Responsibilities:

    • Oversaw all company operations and strategic planning
    • Directed online marketing and business development initiatives

    Achievements:

    • Successfully scaled the firm and achieved significant business milestones
    • Entrepreneurship
    • Strategic Planning
    • Team Building
    • Marketing Strategy
    • Business Development
    • Innovation
    • Financial Management
  • -

    Executive Director @ IDI Marketing Ukraine

    Dnipro, Ukraine - On-site

    Summary:

    • Built and expanded the marketing team, driving key initiatives to achieve company milestones.

    Responsibilities:

    • Managed marketing operations and team growth
    • Implemented strategic initiatives to meet company objectives

    Achievements:

    • Achieved critical company milestones through effective team leadership
    • Team Leadership
    • Marketing Management
    • Project Management
    • Strategic Planning
    • Communication
    • Stakeholder Engagement
  • -

    Deputy Production Manager @ ZMT Technologies

    Zaporizhzhia, Ukraine - On-site

    Summary:

    • Organized and coordinated production processes in a machine-building enterprise.

    Responsibilities:

    • Coordinated day-to-day production processes
    • Optimized production workflows for enhanced efficiency

    Achievements:

    • Improved operational efficiency within the production department
    • Operations Management
    • Production Coordination
    • Process Optimization
    • Efficiency Improvement
    • Team Coordination
    • Quality Control

Projects

AI-Powered CRM

An AI-Powered CRM tool for managing customer relationships effectively and efficiently.

  • AI-powered lead scoring and prioritization
  • Automated sentiment analysis for call transcripts
  • Intelligent call scheduling and routing
  • Real-time conversation insights and suggestions
  • Predictive analytics for optimal outreach timing
Screenshot or preview of AI-Powered CRM project
Security Checker App (NDA)

A tool for assessing security vulnerabilities in applications.

  • Automated vulnerability scanning and assessment
  • Real-time security monitoring and alerts
  • Comprehensive reporting system
  • Integration with popular security databases
  • Custom security rule configuration

Languages

  • English Fluent
  • German Conversational
  • Russian Native
  • Ukrainian Fluent

Education

  • Self-taught / Software Engineering

    Software Engineering

  • Classic Private University

    Master degree at Law

Skills

  • HTML
  • CSS
  • JavaScript
  • TypeScript
  • Python
  • Vue
  • Docker
  • Git
  • GitHub
  • NestJS

2025 © Sergej Müller