Bastian Isensee
Senior Backend Engineer Go & Technical Consultant
Experience
Apr 2024 - Mar 2025
1 yearSenior Backend Engineer Go & Technical Consultant
Regulated trading system for digital assets
Responsibilities:
- Technical consulting to meet regulatory MiCA requirements for a digital trading platform
- Designing and developing backend components and APIs to ensure transparency and auditability requirements are met
- Optimizing core functions in order execution and market data delivery for performance and reliability under high load
- Conducting interviews and onboarding new developers with a structured process
Achievements:
- Successfully delivered MiCA compliance on time, ensuring uninterrupted platform operation
- Reduced user issues and common support requests by fixing complex backend problems
- Strengthened the development team through effective onboarding, mentoring, and knowledge transfer
Technologies:
- Golang, PostgreSQL, REST, Docker, Kubernetes, Kafka, WebSocket, FIX, AWS, CI/CD - GitLab, Prometheus, Grafana, Helm, Kong
Dec 2023 - Present
1 year 8 monthsSenior Software Engineer & Technical Consultant
Configuration application for IT security administrators
Responsibilities:
- Designing and building a configuration application for complex IT security systems to support and simplify administrative workflows
- Fully integrating with existing software systems while improving usability and maintainability
Achievements:
- Delivered all key configuration features to end customers
- Significantly improved usability for administrators
Technologies:
- Java, REST, Vaadin
Sep 2022 - Sep 2023
1 year 1 monthSenior Backend Developer Go
Cryptocurrency trading platform
Responsibilities:
- Developing backend features for a regulated crypto exchange in order execution, market data delivery, reporting, and accounting
- Designing and presenting architecture proposals to scale the existing microservice landscape
- Identifying and resolving performance issues and complex production bugs
- Advising business experts on current system behavior, new requirements, and functional improvements
Achievements:
- Launched new customer features, expanding revenue opportunities
- Reduced operational risks and support effort by fixing bugs and removing manual workarounds
- Contributed to architecture planning to ensure long-term scalability and maintainability
Technologies:
- Golang, PostgreSQL, REST, Docker, Kubernetes, OpenAPI, WebSocket, FIX, AWS, CI/CD - GitLab, Prometheus, Grafana, Helm, Kong
Jul 2016 - Aug 2022
6 years 2 monthsSenior Software Engineer
Algorithmic securities trading
Responsibilities:
- Developing various software systems for a global algorithmic securities trader in trading, risk management, compliance, and backoffice
- Improving systems to meet rising performance, reliability, and MiFID II regulatory requirements
- Taking responsibility for requirements analysis, architecture design, and technical coordination in cross-functional teams
- Leading technical interviews and mentoring junior developers to boost team performance and quality
Achievements:
- Significantly improved performance, reliability, and functionality across much of the software landscape
- Successfully implemented all MiFID II requirements by timely adapting risk management, backoffice, and trading systems
- Increased development team performance and quality through structured onboarding and individual mentoring
Technologies:
- Java, PostgreSQL, Kafka, REST, Linux, Docker, OpenAPI, Bash, AWS, CI/CD - GitLab/Jenkins, MongoDB, Maven, JUnit, Mockito, Vert.x, React, Spring Boot/MVC/Data, Hibernate, Vaadin
Aug 2012 - Jun 2016
3 years 11 monthsSoftware Engineer
Manufacturing execution systems for the pharmaceutical industry
Responsibilities:
- Enhancing and customizing MES solutions for pharmaceutical customers, focusing on ERP integration and custom workflows
- Implementing and testing business-critical features in collaboration with end users while meeting regulatory requirements like GMP
- Advising the product team on evolving the MES with future ERP interfaces in mind
Achievements:
- Successfully delivered custom ERP-MES integrations under strict regulatory guidelines
- Prepared the next MES generation with a future-proof ERP interface through effective knowledge transfer and documentation
Technologies:
- Java, Oracle RDBMS, PL/SQL, RabbitMQ, CI/CD - Jenkins, Maven, JUnit, Mockito, Spring
Summary
Bastian Isensee is a backend engineer and technical consultant with over 12 years of experience building reliable software systems for regulated and mission-critical industries like financial services and trading platforms. Clients appreciate his ability to deliver maintainable solutions where correctness, performance, and auditability are essential to business success.
Bastian specializes in Golang and works with technologies like PostgreSQL, Kafka, REST, Docker, and Kubernetes. He places great value on deeply understanding the business requirements so technical solutions meet real needs. In addition to hands-on development, he supports teams as a trusted advisor on architecture decisions, thorough code reviews, mentoring, and technical leadership.
Service offering:
Backend Development:
- Reliable design and implementation, pragmatic performance tuning, detailed analysis and troubleshooting, constructive code reviews, effective testing, clear communication and documentation
Technical Consulting:
- Expert guidance on requirements analysis, architecture, maintainability, and development processes
Training:
- Effective knowledge transfer and one-on-one mentoring
Primary Tech Stack:
- Golang, PostgreSQL, Kafka, REST / WebSocket / RPC, Docker, Kubernetes, Linux, AWS, CI/CD - GitLab, Prometheus, Grafana, Cucumber / Godog
Languages
German
Native
English
Advanced
Education
Apr 2013 - Mar 2016
FernUniversität in Hagen
Master of Science, Software Development and Programming Languages · Practical Computer Science · Hagen, Germany
Sep 2009 - Feb 2013
Harz University of Applied Sciences
Bachelor of Engineering, Computer Engineering · Automation Engineering and Computer Engineering · Wernigerode, Germany
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