Daniel Sedlack - Senior Software Engineer

Q: Where is Daniel based?

Daniel is based in Hamburg, Germany .

Q: What languages does Daniel speak?

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

Q: How many years of experience does Daniel have?

Daniel has at least 18 years of experience. During this time, Daniel has worked in at least 7 different roles and for 9 different companies . The average length of individual experience is 2 years . Note that Daniel may not have shared all experience and actually has more experience.

Q: What is Daniel's latest experience?

Daniel's most recent position is Senior Software Engineer at energielenker solutions GmbH .

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

In recent years, Daniel has worked for energielenker solutions GmbH , Hausverwaltung , Statista Strategy GmbH & Co. KG , WEG Am Inselpark , and dimater trading technologies GmbH .

Q: Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Information Technology , Banking and Finance , and Construction . Daniel also has some experience in Telecommunication , Energy , and Real Estate .

Q: Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology , Product Development , and Research and Development . Daniel also has some experience in Operations , Finance , and Business Intelligence .

Q: Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Information Technology , Banking and Finance , and Construction .

Q: Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology , Product Development , and Research and Development .

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Hamburg, Germany

Check rate

Experience

Feb 2026 - Jun 2026

5 months

Münster, Germany

Senior Software Engineer

energielenker solutions GmbH

Design and implementation of a Python-based ETL pipeline using the Dagster framework to transform raw energy data from heterogeneous sources with InfluxDB and visualizations in Grafana
Definition of schedule-based and dependency-based jobs
Deployment to a managed Kubernetes cluster with Helm
Integration with InfluxDB Cloud
Data preparation for use in Grafana, including cleaning and normalization plus time-based resampling in Python
Development of dashboards and visualizations in Grafana
Development of unit tests with mocking using pytest
Setup of a CI/CD pipeline in GitLab

Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud

Nov 2025 - Jan 2026

3 months

Hamburg, Germany

Senior Software Engineer

Hausverwaltung

Design and implementation of a solution for continuous monitoring of building infrastructure with Prometheus and Grafana, integrating data from heterogeneous sources (BACnet, MODBUS, SMTP, REST)
Deployment of Prometheus and Grafana in a local container environment
Development and integration of Prometheus exporters in Java with Quarkus for data extraction via the BACnet protocol, SMTP, and external REST web services
Deployment and integration of 3rd-party Prometheus exporters
Creation of Grafana dashboards to visualize data from network, IT infrastructure, and building automation systems
Configuration of alerts and creation of policies with multi-channel notifications using Grafana and the Prometheus Alertmanager
Deployment of Mimir for long-term data storage with S3-compatible storage on Cloudflare R2
Cloud-based monitoring of local infrastructure using Cloudflare Workers
Management of cloud resources with Terraform IaC
Build and deployment using GitLab CI/CD

Technologies: Grafana, Prometheus, Mimir, Java, Quarkus, REST, CI/CD, GitLab, Container, Docker, Cloud, Cloudflare, S3, R2, IaC, Terraform

Aug 2025 - Present

11 months

Hamburg, Germany

Senior Software Engineer

Statista Strategy GmbH & Co. KG

Implementation and further development of a Python-based ETL pipeline for transforming binary input data using the Dagster framework
Design and implementation of an event-driven ETL pipeline in Dagster
Data download from S3-based object storage using MinIO
Specification of a YAML-based format for defining transformation operations
Implementation of a Python engine to merge and transform data from multiple sources into a JSON format
Implementation of schema validation and payload submission to a REST interface
Implementation of unit and integration tests including mocking of interfaces with pytest
Implementation of tracing using OpenTelemetry
Integration into existing GitHub Actions CI/CD pipeline
IaC-based deployment using Pulumi on Google Cloud Run

Technologies: Python, Dagster, pandas, pytest, REST, GraphQL, OpenAPI, CI/CD, GitHub Actions, Container, Docker Compose, OpenTelemetry, Jaeger, S3, MinIO, IaC, Pulumi, Cloud, GCP

Feb 2024 - Mar 2025

1 year 2 months

Hamburg, Germany

Architect / Lead Engineer

WEG Am Inselpark

Overhaul of an existing PLC-based smart home installation and design of the new system with backward compatibility
New software development for installed Wago PLCs using Codesys
Integration of building services using BACnet and MODBUS protocols in Python
Design and implementation of multiple backend web services in Java using Quarkus
GUI development using Vue.js and Vuetify
Setup and administration of Linux servers with deployment of containerized services
Monitoring of hardware and software using Prometheus and Grafana
Adjustment of the network structure
Installation in residential units including acceptance tests, documentation, and customer training

Technologies: Java, Python, Codesys, Linux, Docker, nginx, Quarkus, Vue.js, Prometheus, Grafana, CI/CD, GitLab, Authentik, BACnet, MODBUS, MQTT, Home Assistant, OpenWrt, LaTeX

Jul 2021 - Dec 2023

2 years 6 months

Leverkusen, Germany

Senior Strategy Consultant

dimater trading technologies GmbH

Leading a team for research & development and operations of quantitative strategies for proprietary trading of financial instruments in international markets
Strategy development in the Python ecosystem with data science frameworks (Pandas, NumPy, Matplotlib, Seaborn) and machine learning libraries (scikit-learn, XGBoost) in Jupyter
Design and implementation of infrastructure for data storage, research pipelines, signal generation, and trade execution
Design and implementation of backend services in Java with Quarkus
Implementation of Python libraries for internal use
Setup and management of CI/CD pipelines in GitLab
Deployment of TimescaleDB as a time-series database and Apache Iceberg with S3 object storage and Trino query engine
Deployment and integration of Apache Kafka
Setup of ETL pipelines with Apache Airflow
Setup and administration of a heterogeneous server landscape with cloud resources (AWS, Hetzner) and bare-metal Linux servers
Setup of monitoring using CheckMk
Operation of containerized services with Docker
Deployment and administration of Keycloak for centralized SSO

Technologies: Java, Python, Linux, Docker, nginx, Quarkus, AWS, TimescaleDB, S3, Iceberg, Trino, CI/CD, GitLab, Pandas, NumPy, Matplotlib, scikit-learn, XGBoost, Kafka, Airflow, Tailscale, CheckMk, Keycloak

Mar 2020 - Jun 2021

1 year 4 months

Düsseldorf, Germany

Co-founder

Adelomyia Technologies GmbH

Co-founder of a company developing quantitative strategies for proprietary trading of financial instruments on international markets
Designed, built, and managed the initial infrastructure and strategies
Transitioned to dimater trading technologies GmbH after acquisition and integration into the dimater group

Technologies: Java, Python, Linux, Docker, nginx, Quarkus, AWS, TimescaleDB, S3, CI/CD, GitLab, Pandas, NumPy, Matplotlib, CheckMk, Keycloak

Jan 2012 - Present

14 years 6 months

Hamburg, Germany

Independent Engineer

Dipl.-Ing. Daniel Sedlack

Carried out software and system development projects independently
Architected, implemented, and maintained data and backend solutions
Set up CI/CD pipelines and managed container environments
Advised and supported clients on technical issues

Feb 2011 - Dec 2011

11 months

Hamburg, Germany

On-site

Software Developer

dtms GmbH

Software development with Enterprise Java for mobile messaging and billing infrastructure.

Jul 2008 - Jan 2011

2 years 7 months

Hamburg, Germany

On-site

Working Student Operations / Software Development

Mobileview GmbH / dtms GmbH

Supported operations
Developed internal tools

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Banking and Finance, Construction, Telecommunication, and Energy.

Information Technology

Banking and Finance

Construction

Telecommunication

Energy

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Research and Development, Operations, Finance, and Business Intelligence.

Information Technology

Product Development

Research and Development

Operations

Finance

Business Intelligence

Summary

With over 15 years of professional experience, I have a broad and deep technological perspective and can deliver holistic solutions to my clients, from architecture and implementation to operations.

My main focus is on developing data processing solutions (extraction, transformation, storage) with Python, especially combined with machine learning and AI.

Another focus area is building backend services in Java with modern microservice frameworks like Quarkus, for everything from supporting internal business processes to customer applications.

I round out my profile with solid DevOps experience, able to build CI/CD pipelines and manage container builds and deployments in Docker or Kubernetes environments.

I am also skilled in using cloud resources and monitoring and observability tools to support operations.

Skills

Java Se / Ee / Quarkus (Microservices, Jboss/Wildfly, Maven, Gradle, Intellij, Jpa/Hibernate, Jms, Jsf, Junit, Jax-Rs, Jax-Ws, Rest)
Python (Webdev, Scripting, Data Science, Pandas, Numpy, Matplotlib, Seaborn, Scikit-Learn, Xgboost, Fastapi, Sqlalchemy)
Devops (Linux, Nginx, Apache Http Server, Vpn, Tailscale, Sso, Iam, Keycloak, Bash)
Data Engineering (Dagster, Airflow)
Storage (Sql, Postgresql, Timescaledb, Mysql / Mariadb, S3, Iceberg)
Messaging (Kafka, Rabbitmq, Activemq)
Aws Cloud (S3, Ec2, Lambda, Step Functions, Iam, Rds, Eks/Ecs, Sns, Cloudwatch, …)
Container (Docker, Kubernetes)
Observability & Monitoring (Prometheus, Grafana, Opentelemetry, Checkmk)
Ci/Cd (Gitlab, Jenkins)
Gui (Angular, Vue.Js)

Languages

German

Native

English

Advanced

Education

Oct 2006 - Jun 2011

TU Hamburg-Harburg

Dipl.-Ing. in Computer Science, focus on Software Development & Communications Engineering · Computer Science · Hamburg, Germany

Statistics

Experience

Total positions 9

Experience in Information Technology 18 y

Avg length 2 y 8 m

Longest experience 14 y 5 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Senior Software Engineer, Architect / Lead Engineer, Senior Strategy Consultant

Main industries Information Technology, Banking and Finance, Construction

Main business areas Information Technology, Product Development, Research and Development

Qualifications

Highest degree Bachelor

Profile

Created

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Daniel based?

Daniel is based in Hamburg, Germany.

What languages does Daniel speak?

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

How many years of experience does Daniel have?

Daniel has at least 18 years of experience. During this time, Daniel has worked in at least 7 different roles and for 9 different companies. The average length of individual experience is 2 years. Note that Daniel may not have shared all experience and actually has more experience.

What roles would Daniel be best suited for?

Based on recent experience, Daniel would be well-suited for roles such as: Senior Software Engineer, Architect / Lead Engineer, Senior Strategy Consultant.

What is Daniel's latest experience?

Daniel's most recent position is Senior Software Engineer at energielenker solutions GmbH.

What companies has Daniel worked for in recent years?

In recent years, Daniel has worked for energielenker solutions GmbH, Hausverwaltung, Statista Strategy GmbH & Co. KG, WEG Am Inselpark, and dimater trading technologies GmbH.

Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Information Technology, Banking and Finance, and Construction. Daniel also has some experience in Telecommunication, Energy, and Real Estate.

Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology, Product Development, and Research and Development. Daniel also has some experience in Operations, Finance, and Business Intelligence.

Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Information Technology, Banking and Finance, and Construction.

Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology, Product Development, and Research and Development.

What is Daniel's education?

Daniel holds a Bachelor in Computer Science from TU Hamburg-Harburg.

What is the availability of Daniel?

Daniel is immediately available full-time for suitable projects.

What is the rate of Daniel?

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