Númi Steinn Baldursson

Location	:	Stockholm, Sweden
Contact	:	LinkedIn
GitHub	:	@numisteinn
Website	:	numisteinn.is

About
Skills
Professional Experience
Education
Select University Projects

About

Software engineer with experience in distributed systems, machine learning, and full-stack development. Currently pursuing M.Sc. in Software Engineering of Distributed Systems at KTH Royal Institute of Technology.

Skills

Software Engineering

Languages & Tools - Python, Rust, Java, TypeScript, SQL; Docker, Git, Profiling & Debugging
Systems & Algorithms - Distributed Systems, HPC, Scalable System Architecture
Data & ML - Graph Learning, Data Mining, ML Pipelines, Large-Scale Data Processing

General

Core Competencies - Complex Problem Solving, Collaboration, Autonomy, Adaptability
Languages - English (Full Professional), Icelandic (Native), Swedish (Limited Working)

Professional Experience

PayAnalytics | Reykjavík, Iceland

Software Engineer | 2020–2024

Core developer and early employee contributing to growth from startup to international clients.
Built workforce analytics platform using Vue.js, TypeScript, and Django REST API, enabling HR teams to analyze global compensation data.
Developed and optimized pay equity algorithms, ensuring demographic fairness across hundreds of thousands of employee records.
Delivered scalable front-end and secure REST services for handling sensitive HR data.
Led feature development end-to-end in close collaboration with the product team; occasionally debugged and integrated with existing Java systems.
Helped maintain containerized infrastructure using Docker; supported AWS Lambda-based analytics, monitored via Sentry, with exposure to infrastructure management using Pulumi.

Crayon Iceland ehf | Reykjavík, Iceland

Student Assistant / Junior Consultant | 2019

Supported software asset management audits through data processing and analysis.

Various Summer/Part-time Jobs

Roles including fisherman, waiter, bartender, landscape construction foreman | 2011–2019

Education

KTH Royal Institute of Technology | Stockholm, Sweden

M.Sc. Software Engineering of Distributed Systems | 2024–2026 (projected)

Advanced coursework in distributed systems, HPC, scalable ML/AI, and data intensive computing.
Achieved highest grade (A) in all courses completed so far, demonstrating consistent top performance.

Cohort	Courses
Autumn 2025	Scalable Machine Learning and Deep Learning - ID2223 Scalable Software Development with Functional Programming - DD2489 Data-Intensive Computing - ID2221 Research Methodology and Scientific Writing - II2202
Spring 2025	Deep Learning in Data Science - DD2424 Methods in High Performance Computing - DD2356 Introduction to High Performance Computing - DD2358 Distributed Systems, Advanced Course - ID2203
Autumn 2024	Distributed Artificial Intelligence and Intelligent Agents - ID2209 Data Mining - ID2222 Distributed Systems, Basic Course - ID2201 Modern Methods in Software Engineering - ID2207
Fall 2023	Internet of Things and Artificial Intelligence - EP271V

University of Iceland | Reykjavík, Iceland

B.Sc. Software Engineering (First Class with Distinction) | 2017–2020

Exchange semester at Aarhus University, Spring 2019.

The Commercial College of Iceland | Reykjavík, Iceland

Physics Line | 2012–2016

Select University Projects

Built a distributed SQL database in Rust with multiple servers and a client, demonstrating strong grasp of distributed consensus (OmniPaxos) and fault tolerance 2025
Implemented an N-body simulation for high-performance computing using PyTorch, Dask, and Cython to analyze computational scaling 2025
Simulated electromagnetic wave propagation using the FDTD method, including serial baseline, OpenMP on CPUs, GPU acceleration, and MPI domain decomposition 2025