Florian Biermann

Software Engineer, PhD in Computer Science

florian.biermann@protonmail.com | GitHub | LinkedIn

Currently

Senior software engineer at Keylane A/S.

Overview

PhD in computer science, M.Sc. in IT, with extensive industry experience as tech lead, leading architecture, programming language design and parallel and concurrent programming.

My technical core strengths are object-oriented and functional programming; weak memory models; concurrency and parallel programming; and programming language design and implementation.

Languages F#, OCaml, Java, C#, C++, Python, Ruby, Racket and Emacs Lisp.

Domains Weak memory models, concurrent programming, DSL design and implementation.

Employment

2026-now Keylane A/S, Copenhagen, Denmark

Senior software engineer
Implementing business features in Java

2026-now Thread & Type

Owner and chief consultant
IT consultancy for parallel and concurrent programming (thread) and functional programming (type).
Running workshops about parallel and concurrent programming using threading mysteries.

2025-2026 NES Tech A/S, Copenhagen, Denmark

System developer
Implementing business features using the in-house domain-specific language (DSL).
Built an experimental backend for the DSL for enhanced performance and safety, including Hindley-Milner style type inference.

2023-2025 IT University, Copenhagen, Denmark

Part-time lecturer for “Advanced Programming”
Functional programming in Scala
Monads, type theory, API design
Covering first five-six lectures of the course

2018-2025 SimCorp, Copenhagen, Denmark

Principal Software Developer, Tech Lead
Previous titles:
- Software Developer (2018)
- Senior Software Developer (2020)
- Lead/Principal Software Developer (2022)
Planning business features and enablers in the financial derivatives (OTC) space
Onboarding and mentoring of new colleagues
Maintenance and development of a domain-specific language (DSL) for OTC instruments in OCaml and C#
Key projects:
- various enhancements for the OTC DSL (performance, consistency, expressiveness, ease-of-use);
- technical roadmap for improving performance of the OTC platform;
- inventing an operational semantics for modelling a new business logic execution mechanism;
- designing a CodeQL-style database for business logic DSL for use in development tooling or non-technical stakeholders;
- inventing an API for OTC instruments, allowing for architecture reconciliation across departments;
- implementing a Gherkin-based DSL to allow business testers to write integration tests, going from 100 to more than 5000 business tests;
- re-design of the OTC importer flow;
- bootstrapping of the OTC web API from the Trade Manager importer;
- mentoring master students during their industry thesis; and
- experimental compiler from OCaml bytecode to .NET CIL;
C#, OCaml, F#

2014-2015 IT University, Copenhagen, Denmark

Research assistant
Key projects:
- A gaze-tracking enabled, interactive LEGO construction manual that was presented at CES 2015
- Running HCI experiments
- Teaching assistant for “Practical Parallel and Concurrent Programming”
Java, F#

2013-2014 Medial Insight A/S, Copenhagen, Denmark