Sebastian Wetzel - Software Engineer & Consultant

Q: Where is Sebastian based?

Sebastian is based in Hamburg, Germany .

Q: What languages does Sebastian speak?

Sebastian speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Sebastian have?

Sebastian has at least 18 years of experience. During this time, Sebastian has worked in at least 5 different roles and for 4 different companies . The average length of individual experience is 3 years . Note that Sebastian may not have shared all experience and actually has more experience.

Q: What is Sebastian's latest experience?

Sebastian's most recent position is Software Engineer & Consultant at Freelancer .

Q: What companies has Sebastian worked for in recent years?

In recent years, Sebastian has worked for Freelancer , cropspot GmbH , and Exporo AG .

Q: Which industries is Sebastian most experienced in?

Sebastian is most experienced in industries like Information Technology (IT) , Real Estate , Media, and Entertainment and Publishing . Sebastian also has some experience in Banking and Finance and Agriculture .

Q: Which business areas is Sebastian most experienced in?

Sebastian is most experienced in business areas like Information Technology (IT) , Marketing , and Product Development .

Q: Which industries has Sebastian worked in recently?

Sebastian has recently worked in industries like Information Technology (IT) , Banking and Finance , and Real Estate .

Q: Which business areas has Sebastian worked in recently?

Sebastian has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

Hamburg, Germany

Experience

Sep 2023 - Present

2 years 6 months

Software Engineer & Consultant

Freelancer

Specialized in event driven microservice architecture in AWS with NodeJS, Typescript and Vue/React/Next in the frontend
Developed a SaaS product in the B2B sector
Used AWS services: DynamoDB, Lambda, SQS, SES, EventBridge, Cognito; Serverless-Framework; Rest-API
Implemented unit tests with Jest and Mocha
Set up CI/CD pipeline with GitHub Actions
Developed a SaaS product for organization management
Worked with AWS Microservice architecture and event driven design
Utilized CDK, NodeJS OpenAI-API, React, Vue
Continued use of DynamoDB, Lambda, SQS, SES, EventBridge, Cognito, Typescript
Maintained CI/CD pipeline with GitHub Actions

Aug 2022 - Aug 2023

1 year 1 month

Chief Technology Officer

cropspot GmbH

Developed and scaled a trading platform for agricultural products
Employed AWS, NodeJS, Vue, Typescript, PHP
Migrated from monolithic architecture to microservices
Used MySQL, Laravel, DynamoDB, Lambda, Rest-API
Wrote unit tests with PHPUnit
Established CI/CD pipeline with GitHub Actions
Managed people and technical teams

Jun 2020 - Jul 2022

2 years 2 months

Team Lead Software Engineering

Exporo AG

Developed an investment platform for real estate
Built microservices with event driven and event sourcing patterns
Leveraged AWS services: DynamoDB, Lambda, SNS, SQS, EventBridge, EC2, ECS
Integrated Ethereum Blockchain
Wrote unit tests with Jest and Mocha; performed E2E tests with Cypress
Managed CI/CD pipelines with GitHub Actions and CircleCI
Held personnel and technical responsibility for a team of 5–7 members
Conducted half-yearly staff appraisals and evaluations, salary and bonus determinations, promotions, and OKRs

Jan 2018 - May 2020

2 years 5 months

Fullstack Software Engineer

Exporo AG

Developed a tool for the digitalization of internal work processes
Worked with AWS, PHP, React, Typescript
Maintained monolithic architecture with Laravel, EC2, ECS, GitLab
Wrote unit tests with PHPUnit; performed E2E tests with Cypress
Managed CI/CD pipeline with CircleCI

Apr 2016 - Dec 2019

3 years 9 months

Fullstack Software Engineer

Stamp Media GmbH

Developed and maintained customer sites and web applications
Used PHP, JavaScript, HTML, CSS, Ruby
Worked with WordPress, Laravel, Vue, Ruby on Rails, Angular
Performed server administration tasks

Jan 2008 - Mar 2016

8 years 3 months

Web Developer

Freelancer

Developed and maintained customer sites
Employed PHP, JavaScript, HTML, CSS
Worked with WordPress, Laravel, Vue
Handled server administration and SEO

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (10.5 years), Real Estate (4.5 years), Media and Entertainment (3.5 years), Banking and Finance (2 years), and Agriculture (1 year).

Information Technology

Real Estate

Media and Entertainment

Banking and Finance

Agriculture

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (18 years), Marketing (8 years), and Product Development (5.5 years).

Information Technology

Marketing

Product Development

Summary

Specialized in event driven microservice architecture in AWS with NodeJS, Typescript and Vue/React/Next in the frontend.

Skills

Aws
Nodejs
Typescript
Vue
React
Nextjs
Microservice Architecture
Event Driven Architectures
Dynamodb
Lambda
Sqs
Ses
Eventbridge
Cognito
Serverless-framework
Rest-api
Unit Tests With Jest
Unit Tests With Mocha
Ci/cd-pipeline With Github Actions
Cdk
Openai-api
People Management
Php
Monolithic Architecture
Microservices
Mysql
Laravel
Sns
Ec2
Ecs
Etherium Blockchain
E2e Tests With Cypress
Gitlab
Circleci
Javascript
Html
Css
Ruby
Wordpress
Rubyonrails
Angular
Server Administration
Seo

Languages

German

Native

English

Advanced

Education

Oct 2001 - Jun 2009

CAU Kiel

Geology · Kiel, Germany

Oct 1991 - Jun 1999

Kyffhäusergymnasium

Abitur · Bad Frankenhausen, Germany

Profile

Created

November 2023

Last Update

August 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Sebastian based?

Sebastian is based in Hamburg, Germany.

What languages does Sebastian speak?

Sebastian speaks the following languages: German (Native), English (Advanced).

How many years of experience does Sebastian have?

Sebastian has at least 18 years of experience. During this time, Sebastian has worked in at least 5 different roles and for 4 different companies. The average length of individual experience is 3 years. Note that Sebastian may not have shared all experience and actually has more experience.

What roles would Sebastian be best suited for?

Based on recent experience, Sebastian would be well-suited for roles such as: Software Engineer & Consultant, Chief Technology Officer, Team Lead Software Engineering.

What is Sebastian's latest experience?

Sebastian's most recent position is Software Engineer & Consultant at Freelancer.

What companies has Sebastian worked for in recent years?

In recent years, Sebastian has worked for Freelancer, cropspot GmbH, and Exporo AG.

Which industries is Sebastian most experienced in?

Sebastian is most experienced in industries like Information Technology (IT), Real Estate, Media, and Entertainment and Publishing. Sebastian also has some experience in Banking and Finance and Agriculture.

Which business areas is Sebastian most experienced in?

Sebastian is most experienced in business areas like Information Technology (IT), Marketing, and Product Development.

Which industries has Sebastian worked in recently?

Sebastian has recently worked in industries like Information Technology (IT), Banking and Finance, and Real Estate.

Which business areas has Sebastian worked in recently?

Sebastian has recently worked in business areas like Information Technology (IT) and Product Development.

What is Sebastian's education?

Sebastian attended CAU Kiel for Geology.

What is the availability of Sebastian?

Sebastian is immediately available full-time for suitable projects.

What is the rate of Sebastian?

Sebastian's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.