From c12ff31cf8a2acd06bffa08e588e915f9ff28bf8 Mon Sep 17 00:00:00 2001
From: Gustaf Rydholm <gustaf.rydholm@gmail.com>
Date: Wed, 22 Oct 2025 00:05:38 +0200
Subject: Update

---
 experience.tex | 113 +++++++++++++++++++++------------------------------------
 1 file changed, 41 insertions(+), 72 deletions(-)

(limited to 'experience.tex')

diff --git a/experience.tex b/experience.tex
index c4ae483..b976c13 100644
--- a/experience.tex
+++ b/experience.tex
@@ -1,58 +1,57 @@
 \section{Experience}
-\vspace{-0.2cm}
-% According to Google Recruiters, use the XYZ formula - Accomplished [X] as measured by [Y], by doing [Z]
 
 \company{Software Engineer}
 {Nexure/Electrolux AB}
 {Stockholm, Sweden}
 {Aug 2021 -- present}
 {
-Designed and maintained backend services for Appliance Repair Service Platforms using functional programming principles in Kotlin, supporting Sweden/NA launches and EU expansion.
+Backend engineer on Appliance Repair Service platforms (Sweden, North America, EU) 
+within a 100+ microservice ecosystem. Primary contributor to 10+ services, introducing 
+functional programming patterns to Kotlin codebases.
 \vspace{0.25em}
 \begin{itemize}[topsep=0pt,parsep=0pt,partopsep=0pt,leftmargin=10pt,labelwidth=6pt,labelsep=4pt]
-  \item \textbf{Functional Architecture}: Implemented immutable data models and \textbf{railway-oriented} error handling in Kotlin, mirroring Haskell Either monad and patterns.
-  \item Event-Driven Systems: Built audit trails and transaction synchronization scripts for insurance processing (bordereau), handling 10K+ daily events – directly applicable to event sourcing.
-  \item Cloud-Native Infrastructure: Deployed Kubernetes services on EKS using Helm/Terraform, managing stateful PostgreSQL workloads and AWS data services (SQS/SNS).
-  \item Data Integrity: Optimized complex SQL queries for PostgreSQL and resolved cross-database inconsistencies.
-  \item Security and Auth: Engineered JWT validation libraries and permission APIs, securing microservices with Auth0.
-  \item \textbf{Tech Stack}: Kotlin (functional paradigms) \textbullet\ PostgreSQL \textbullet\ Kubernetes/EKS \textbullet\ AWS \textbullet\ Terraform \textbullet\ Event-Driven Architecture \textbullet\ Auth0 \textbullet\ Datadog
+  \item \textbf{Functional Programming:} Applied railway-oriented error handling, 
+  immutable data models, and shared type libraries across services, bringing Haskell's 
+  Either monad patterns to Kotlin. Emphasized type safety and composability in API design.
+  \item \textbf{Service Development:} Built subscription, payment, and user management 
+  microservices with Kotlin/Ktor. Developed RESTful and WebSocket APIs with asynchronous 
+  event processing via SQS/SNS for non-blocking workflows.
+  \item \textbf{Security \& Access Control:} Engineered JWT validation library for Auth0 
+  and permission enforcement APIs with resource-level access control, verifying user 
+  permissions and resource ownership across services.
+  \item \textbf{Infrastructure:} Configured Kubernetes resources (deployments, services, 
+  secrets, ConfigMaps) and contributed Terraform resources (SNS, SQS, ingresses) to 
+  shared infrastructure codebase.
+  \item \textbf{Tech Stack}: Kotlin (Ktor) \textbullet\ PostgreSQL \textbullet\ 
+  Kubernetes/EKS \textbullet\ AWS \textbullet\ Terraform \textbullet\ Auth0
 \end{itemize}
 }
 
-% \company{Software Engineer}
-% {Nexure/Electrolux AB}
-% {Stockholm, Sweden}
-% {Aug 2021 -- present}
-% {
-% Designed and maintained backend services for Appliance Repair Service Platforms using functional programming principles in Kotlin, supporting Sweden/NA launches and EU expansion.
-% \vspace{0.25em}
-% \begin{itemize}[topsep=0pt,parsep=0pt,partopsep=0pt,leftmargin=10pt,labelwidth=6pt,labelsep=4pt]
-%   \item Developed \textbf{subscriptions engine} and \textbf{user management service} using \textbf{Kotlin} and \textbf{Ktor}, enabling features like recurring payments and user account management.
-%   \item Contributed to \textbf{Auth0 migration} of users from legacy to new platform, ensuring seamless transitions without user intervention.
-%   \item Developed \textbf{synchronization scripts} to update \textbf{APIs}, roles, and permissions in \textbf{Auth0}, ensuring consistency across dev, staging, and prod environments.
-%   \item Introduced \textbf{type library} for shared business logic across \textbf{microservices}, enhancing code consistency and maintainability.
-%   \item Built \textbf{JWT deserialization} library and \textbf{APIs} for permission-based checks on \textbf{HTTP} and \textbf{WebSocket} endpoints, securing all public-facing services.
-%   \item Introduced \textbf{railway-oriented} and \textbf{workflow-oriented programming}, improving error handling and process clarity in \textbf{microservices}.
-%   \item Supported two in-house platform launches in Sweden and North America for \textbf{Appliance Repair Service} features, with ongoing EU expansion.
-%   \item Contributed to \textbf{infrastructure} via \textbf{Terraform} for \textbf{AWS} resources (RDS, SNS, SQS).
-%   \item Enhanced legacy platform with \textbf{Appliance Repair Service} features, including bordereau for insurance transactions, 
-%     tax calculation updates, and cross-database record corrections, improving system reliability.
-%   \item Tech stack: \textbf{Kotlin} (Ktor), \textbf{Kubernetes}, \textbf{PostgreSQL}, \textbf{MongoDB}, \textbf{Helm}, \textbf{Terraform}, \textbf{AWS}, \textbf{CI/CD}, \textbf{WebSocket}, \textbf{Auth0}, \textbf{DataDog}.
-% \end{itemize}
-% }
-
 \company{Machine Learning Engineer (Cybersecurity)}
 {Saab AB}
 {Stockholm, Sweden}
 {Aug 2020 -- Aug 2021}
 {
 \begin{itemize}[topsep=0pt,parsep=0pt,partopsep=0pt,leftmargin=10pt,labelwidth=6pt,labelsep=4pt]
-  \item \textbf{Event-Driven Architecture}: Architected \textbf{Kafka-driven microservices} for sensor data ingestion and processing, replacing batch-based database fetching and improving system responsiveness.
-  \item \textbf{Automated Model Deployment}: Developed modular Python pipelines for training and evaluating deep learning models, enabling \textbf{automated selection} of optimal models to production. This system streamlined the transition from research to deployment.
-  \item \textbf{Cloud-Native Optimization}: Reduced Docker image sizes from 2GB to 73MB using multistage builds and Alpine Linux. This improved CI/CD pipeline efficiency, slashing average build times from 10–30 minutes to under 10 seconds with \textbf{Tekton}.
-  \item \textbf{Distributed Systems}: Engineered a \textbf{graph-based sensor fusion microservice} to correlate data across sensors, enhancing complex pattern analysis for anomaly/threat detection.
-  \item \textbf{DevOps Leadership}: Spearheaded development tooling practices, deploying and maintaining a private PyPI server to enforce versioning and resolve dependency conflicts, improving team productivity.
-  \item \textbf{Tech Stack}: Python, Kafka, Kubernetes, PostgreSQL, Redis, TensorFlow, Tekton, Docker.
+ \item \textbf{Event-Driven Architecture:} Architected Kafka-based microservices for 
+  sensor data ingestion and processing, replacing batch-based database polling. Enabled 
+  multiple services to subscribe to incoming data streams for parallel processing and 
+  pattern analysis.
+  \item \textbf{Sensor Fusion System:} Developed graph-based microservice for correlating 
+  data across heterogeneous sensor systems, enabling downstream services to perform 
+  complex pattern analysis and anomaly detection.
+  \item \textbf{ML Pipeline Infrastructure:} Built modular Python pipelines for training 
+  and evaluating deep learning models with automated metric-based model selection for 
+  production deployment.
+  \item \textbf{DevOps \& Infrastructure:} Redesigned Docker build strategy across all 
+  Python microservices, reducing image sizes from ~2GB to ~73MB using multistage builds 
+  and Alpine base images. This eliminated persistent storage issues in self-hosted Docker 
+  registry and reduced CI/CD build times from 10-30 minutes to seconds in Tekton.
+  \item \textbf{Developer Tooling:} Deployed and maintained private PyPI server for <10 
+  developers, eliminating circular dependencies and enforcing proper package versioning. 
+  Significantly improved code quality and development workflow across the team.
+  \item \textbf{Tech Stack}: Python \textbullet\ Kafka \textbullet\ Kubernetes 
+  \textbullet\ PostgreSQL \textbullet\ Redis \textbullet\ Tekton \textbullet\ Docker
 \end{itemize}
 }
 
@@ -62,39 +61,9 @@ Designed and maintained backend services for Appliance Repair Service Platforms
 {Aug 2018 -- Aug 2020}
 {
 \begin{itemize}[topsep=0pt,parsep=0pt,partopsep=0pt,leftmargin=10pt,labelwidth=6pt,labelsep=4pt]
- \item \textbf{Signal Processing}: Built simulation software for realistic radar/communication signal environments, enabling training and evaluating machine learning models for electronic warfare applications.
- \item \textbf{Algorithm Research}: Researched and prototyped multiple stages of the radar warning receiver with machine learning models, focusing on improving signal classification (communication vs radar) and source grouping.
- \item \textbf{Tech stack}: Python, VHDL, Signal Processing.
+ \item Built signal simulation software for radar and communication environments, enabling 
+ team to train and evaluate ML models. Researched ML approaches for signal classification 
+ under compute and data constraints.
+ \item \textbf{Tech Stack}: Python \textbullet\ Signal Processing
 \end{itemize}
-}
-
-% \company{Machine Learning Engineer}
-% {Saab AB}
-% {Stockholm, Sweden}
-% {Aug 2018 -- Aug 2021}
-% {
-% Developed machine learning solutions for defense systems, creating \textbf{data pipelines}, \textbf{machine learning models}, \textbf{microservices}, and \textbf{CI/CD workflows} for cybersecurity and electronic warfare applications.
-% \vspace{0.25em}
-% \begin{itemize}[topsep=0pt,parsep=0pt,partopsep=0pt,leftmargin=10pt,labelwidth=6pt,labelsep=4pt]
-%   \item Built \textbf{Python}-based \textbf{data pipelines}, automating dataset preprocessing for machine learning.
-%   \item Architected \textbf{asynchronous microservices} with \textbf{Kafka}, enabling continuous sensor data subscription and processing across services, improving system responsiveness over batch-based database fetching.
-%   \item Designed modular \textbf{PyTorch pipelines} for \textbf{deep learning} model training and evaluation, automating best-model selection for production deployment of trajectory prediction models.
-%   \item Implemented trajectory prediction models with \textbf{LSTM} and \textbf{transformer} based architectures for anomaly detection.
-%   \item Deployed a private \textbf{PyPI server}, enforcing versioning and resolving dependency conflicts, improving development experience for the entire team.
-%   \item Developed a \textbf{graph-based} \textbf{sensor fusion} microservice, enhancing complex pattern analysis for cybersecurity applications.
-%   \item Optimized \textbf{Docker images} from 2GB to 73MB using \textbf{multistage builds} and Alpine, reducing CI/CD build times from 10--30 minutes to under 10 seconds with \textbf{Tekton}.
-%   \item Researched replacing different stages of the radar warning receiver with machine learning models, enhancing classification of communication vs radar signals, improving detection of Low Probability of Intercept radar pulses. 
-%   \item Tech stack: \textbf{Python} (Pandas, PyTorch, FastAPI), \textbf{Kafka}, \textbf{Redis}, \textbf{PostgreSQL}, \textbf{ArangoDB}, \textbf{Kubernetes}, \textbf{Helm}, \textbf{Docker}, \textbf{Tekton}, \textbf{VHDL}.
-% \end{itemize}
-% }
-
-
-%\company{Master's Thesis}
-%{Ericsson AB}
-%{Jan 2018 -- June 2018 \qquad 6 months}
-%{Stockholm, Sweden}
-%{
-%Built a \textbf{natural language processing} system using a biologically %inspired machine learning algorithm, called \textbf{Hierarchical Temporal %Memory}, for detecting anomalies in system logs. Demonstrated that the system %was able to achieve similar performance to the existing system. Developed with %\textbf{Python}, \textbf{NuPIC}, and \textbf{pandas}.
-%}\\
-
-%\ruler
+}\\
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