Sergej Tissen - Senior IT Consultant | FRATCH

en
de

Munich, Germany

Experience

Jan 2023 - Present

3 years 1 month

Munich, Germany

Senior IT Consultant

Freelance

Oct 2017 - Dec 2022

5 years 3 months

Munich, Germany

Senior IT Consultant

codecentric AG

Designed and built a serverless platform, created AWS serverless infrastructure, set up continuous deployment pipelines, and implemented business logic. (React, TypeScript, JavaScript, Node.js, AWS, Java, Kotlin, GraphQL)
Conceived and developed a service to meet requirements of the Digital Supply Act. (Java, Spring Boot, AWS, Kubernetes)
Advised on architecture and built a microservices platform for internal business applications. (React, TypeScript, AWS, Java, Spring Boot, Kubernetes)

Jan 2016 - Sep 2017

1 year 9 months

Munich, Germany

Senior Fullstack Developer

Jochen Schweizer GmbH

Migrated and enhanced the e-commerce platform on AWS, set up AWS infrastructure for microservices, built continuous deployment pipelines, and designed and implemented microservices.
Provided organizational and technical mentoring to apprentices.
Technologies: React, TypeScript, JavaScript, Node.js, AWS, Docker

May 2014 - Nov 2015

1 year 7 months

Munich, Germany

Scrum Master

Allplan GmbH

Led teams that developed an online project management portal and a CAD application, introduced and scaled Scrum processes across 16 teams.
Trained and coached teams on adopting continuous integration.
Provided organizational and technical mentoring to apprentices.
Approaches: Scrum, Kanban, DevOps

Apr 2013 - Apr 2014

1 year 1 month

Berlin, Germany

Technical Project Manager

Aperto AG

Migrated existing web portals to an enterprise web CMS, coordinated the development team, handled technical design, and led client workshops.
Created and monitored project plans, cost estimates, and proposals.
Technologies: Magnolia CMS (Java), JavaScript

Aug 2010 - Jun 2012

1 year 11 months

Berlin, Germany

Fullstack Developer

Freelance

Developed online registration portals for medical conferences. (Java, Groovy, JavaScript)

Oct 2008 - Jul 2010

1 year 10 months

Berlin, Germany

Fullstack Developer

Lambdalogic GmbH

Developed online registration portals for medical conferences, backend and frontend development, release management, and designed and implemented a generic form editor. (Java, Groovy, JavaScript)

Mar 2007 - Aug 2008

1 year 6 months

Berlin, Germany

Fullstack Developer

Alpha-Spirit

Developed an online e-learning platform for video-based courses. (Java, JavaScript)

Skills

Development

React
Typescript
Javascript
Node.js
Graphql
Next.js
Java
Spring Boot

Operations

Ci/cd
Docker
Kubernetes
Gitlab
Akamai
Infrastructure As Code

AWS

Vpc
Ecs
Lambda
S3
Dynamodb
Kinesis
Route53
Codepipeline

Architecture

Serverless
Microservices
Cloud-native
Event-driven
Rest Api Design

Approach

Scrum
Kanban
Devops
Lean
Safe

Languages

German

Native

Russian

Native

English

Advanced

Education

Oct 2010 - Mar 2013

IPU Berlin

Bachelor of Arts in Psychology · Psychology · Berlin, Germany · 1.4

Oct 2001 - Jun 2005

Universität Paderborn

Bachelor of Computer Science · Computer Science · Paderborn, Germany · 1.6

Certifications & licenses

AWS Certified Developer - Associate Level

AWS Certified Solutions Architect - Associate Level

IHK Certified Trainer (Trainer License)

Intensive General English Course (6 months in Sydney)

ScrumMaster Advanced

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