Bastian Isensee - Senior Go Backend Engineer & Consultant

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Hamburg, Germany

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Experience

Apr 2024 - Mar 2025

1 year

Senior Backend Engineer Go & Technical Consultant

Regulated trading system for digital assets

Technical consulting to meet regulatory MiCA requirements for a digital trading platform
Design and development of backend components and APIs to comply with transparency and auditability requirements
Optimization of core functions in order execution and market data delivery with a focus on performance and reliability under high load
Conducting job interviews and structured onboarding of new developers
Successful and timely implementation of the regulatory MiCA requirements, ensuring uninterrupted operations
Reduction of user issues and common support requests by fixing complex backend problems
Strengthening the development team through effective onboarding, mentoring, and knowledge sharing

Dec 2023 - Present

2 years 9 months

Senior Software Engineer & Technical Consultant

Configuration application for IT security administrators

Design and development of a configuration application for complex IT security systems to support and simplify administrative workflows
Implementation of full integration into existing software systems while improving usability and maintainability
Implementation of all important configuration features so they can be made available to the end customer
Significant improvement in usability for administrators

Sep 2022 - Sep 2023

1 year 1 month

Senior Backend Developer Go

Trading platform for cryptocurrencies

Development of backend features for a regulated crypto exchange in the areas of order execution, market data delivery, reporting, and accounting
Design and presentation of architecture proposals to scale the existing microservice landscape
Identification and fixing of performance issues as well as complex bugs in the production system
Advising business experts on current system behavior, new requirements, and functional improvements
Delivery of new features for end customers, thereby expanding revenue opportunities
Reduction of operational risks and support effort through bug fixes and removal of manual workarounds
Involvement in architecture planning to ensure long-term scalability and maintainability

Jul 2016 - Aug 2022

6 years 2 months

Senior Software Engineer

Algorithmic securities trading

Development of various software systems for a globally active algorithmic securities trader in the areas of trading, risk management, compliance, and back office
Improvement of multiple systems to meet increased requirements for performance, reliability, and MiFID II regulations
Taking responsibility for requirements analysis, architecture design, and technical coordination in cross-functional teams
Conducting technical interviews and mentoring junior developers to improve output and development quality
Significant improvement in performance, reliability, and functionality across large parts of the software landscape
Successful implementation of all MiFID II regulatory requirements through timely adjustments to risk management, back office, and trading systems
Increased team performance and quality through structured onboarding and individual mentoring

Aug 2012 - Jun 2016

3 years 11 months

Software Engineer

Manufacturing execution systems for the pharmaceutical industry

Expansion and adaptation of MES solutions for pharma customers with a focus on ERP integration and customer-specific workflows
Implementation and acceptance testing of business-critical features in collaboration with end customers and in compliance with regulatory requirements such as GMP
Advising the product team on further development of the MES with a view to future ERP interfaces
Successful implementation of customer-specific ERP-MES integrations while taking regulatory requirements into account
Preparing the next MES generation with a future-proof ERP interface through effective knowledge transfer and documentation

Industry Experience

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

Experienced in Banking and Finance, Pharmaceutical, and Information Technology.

Banking and Finance

Pharmaceutical

Information Technology

Business Area Experience

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

Experienced in Information Technology, Product Development, Operations, Finance, and Quality Assurance.

Information Technology

Product Development

Operations

Finance

Quality Assurance

Summary

Bastian Isensee is a backend developer and technical consultant with over 12 years of experience building reliable software systems for regulated and business-critical industries like financial services and trading platforms. Clients value his ability to deliver maintainable solutions where correctness, performance, and auditability are essential for business success.

Bastian specializes in Golang and works with technologies like PostgreSQL, Kafka, REST, Docker, and Kubernetes. He places great value on a deep understanding of business needs so that technical solutions are implemented in a way that fits the actual requirements. In addition to hands-on development, he supports teams as a trusted advisor with architecture decisions, solid code reviews, mentoring, and technical leadership.

Skills

Primary Tech Stack

Golang
Postgresql
Kafka
Rest / Websocket / Rpc
Docker
Kubernetes
Linux
Aws
Ci/Cd - Gitlab
Prometheus
Grafana
Cucumber / Godog

Additional Skills

Java
Spring
Hibernate
Junit
Mockito
Bash
Fix
Openapi
Sqlite
Mongodb
Rabbitmq
Oracle Rdbms
Helm
Kong
Git
Agile / Scrum / Kanban

Languages

German

Native

English

Advanced

Education

Apr 2013 - Mar 2016

FernUniversität in Hagen

Master of Science · Practical Computer Science · Germany

Sep 2009 - Feb 2013

Hochschule Harz (FH)

Bachelor of Engineering · Automation Technology and Computer Engineering · Germany

Statistics

Experience

Total positions 5

Experience in Banking and Finance 8 y

Avg length 2 y 11 m

Longest experience 6 y 1 m

Expertise

Recent roles Senior Backend Engineer Go & Technical Consultant, Senior Software Engineer & Technical Consultant, Senior Backend Developer Go

Main industries Banking and Finance, Pharmaceutical, Information Technology

Main business areas Information Technology, Product Development, Operations

Qualifications

Highest degree Master

Profile

Created

June 2025

Last Update

August 2026

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Frequently asked questions

Have questions? Find more information here.

Bastian is based in Hamburg, Germany and can operate in on-site, hybrid, and remote work models.

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

Bastian has at least 14 years of experience. During this time, Bastian has worked in at least 5 different roles and for 5 different companies. The average length of individual experience is 3 years and 9 months. Note that Bastian may not have shared all experience and actually has more experience.

Based on recent experience, Bastian would be well-suited for roles such as: Senior Backend Engineer Go & Technical Consultant, Senior Software Engineer & Technical Consultant, Senior Backend Developer Go.

Bastian's most recent position is Senior Backend Engineer Go & Technical Consultant at Regulated trading system for digital assets.

In recent years, Bastian has worked for Regulated trading system for digital assets, Configuration application for IT security administrators, Trading platform for cryptocurrencies, and Algorithmic securities trading.

Bastian is most experienced in industries like Banking and Finance, Pharmaceutical, and Information Technology.

Bastian is most experienced in business areas like Information Technology, Product Development, and Operations. Bastian also has some experience in Finance and Quality Assurance.

Bastian has recently worked in industries like Banking and Finance and Information Technology.

Bastian has recently worked in business areas like Information Technology, Operations, and Finance.

Bastian holds a Master in Practical Computer Science from FernUniversität in Hagen and a Bachelor in Automation Technology and Computer Engineering from Hochschule Harz (FH).

Bastian will be available full-time from January 2027.

Daily Rate Distribution

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<€800 €800-960 €960-1120 €1120-1280 €1280+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 979 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000

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Median rate 996 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.