Open to software & cloud roles · 2027

Arvid Hallstroem Software & cloud engineering.

Final-year Computing Science student at the University of Glasgow. I build backend services in Python and the cloud infrastructure they run on: APIs, caching layers, auth and data pipelines on Google Cloud.

See my work Download resumeResume
LinkedIn 2960850h@student.gla.ac.ukEmail Glasgow, UK

// simulated traffic through my Redis write-through cache

GraduatingJuly 2027 · BSc (Hons)
Right to workUK · EU citizen
LanguagesPython · Java · SQL
CloudGCP · BigQuery · Redis
Arvid working at a desk with a monitor and laptop
~/glasgow $ whoami
01 · About

Hi, I'm Arvid.

I'm a Swedish Computing Science student in Glasgow who likes building software that runs in the cloud.

Most of what I know I learned by deploying things. I've written Flask services on App Engine, put Redis in front of MySQL as a write-through cache, built a JWT auth service my other apps share, and spent a summer building a log pipeline into BigQuery.

Python is my main language and I also write Java. Security is a hobby of mine, which is why my projects tend to include auth and logging.

Looking for

Graduate software engineering and cloud engineering roles where I'm stretched and keep learning.

02 · Experience

Building a log pipeline on GCP.

Infrastructure & Security Summer Analyst

Advanced Voice Research Labs, Inc. · Internship
Jun – Aug 2026
Project MELT · the log pipeline I helped buildGCP · PoC
01 · CollectFlask appsDrop-in logging module
02 · ShipCloud LoggingFrom GCP PaaS
03 · QueryBigQuerySQL for behaviour patterns
04 · SeeData StudioSpotting unusual users

Project MELT is AVRL's new platform for centralising application and request-level logs. The data feeds their firewall rules and in-house monitoring.

What I did
  • Contributed to the drop-in Flask logging module
  • Built the pipeline proof of concept into BigQuery
  • Wrote SQL on BigQuery to find behaviour patterns
  • Used Data Studio to surface unusual traffic
What the data showed
Web app scannersautomated probing
Users running botscustomers automating access
Offshore trafficunexpected regions
Offered letters of recommendation by AVRL's Director of Engineering and Senior Director of Operations.
03 · Projects

Live systems, not screenshots.

Both are deployed on Google Cloud and share one login, so you can try them yourself.

PROJECT 01

Redis write-through cache

cache.arvid.engineering Try the live demo

Reads and writes go to a MySQL database with Redis as a write-through cache. One user can read and write, another can only read. Those scopes come from logging in through auth.arvid.engineering.

  • Redis
  • MySQL
  • HAProxy
  • VPC
  • Compute Engine
What I learned
  • Redis on GCP Memorystore, reachable only inside a VPC
  • Running MySQL on an Ubuntu VM
  • Setting up HAProxy as a reverse proxy on Debian, plus VPCs and firewall rules on GCP (with AI assistance)
How it worksWrite-through
ClientLogged-in userScope from auth.arvid.engineering
Debian VMHAProxy reverse proxyPublic entry point
AppWrite → cache + DB togetherread: Redis hit, else MySQL
Memorystore · VPCRedisFast reads
Ubuntu VMMySQLSource of truth

Animation built with Claude Opus 5.5 from my repo, prompted by me.

PROJECT 02

OAuth 2.0 Client Credentials flow

auth.arvid.engineering Try the live demo

An auth service that issues signed JWTs carrying access scopes. It publishes a JWKS endpoint so any service can verify a token, and sets a cross-subdomain cookie so the other apps on arvid.engineering can see the session.

  • Python
  • Flask
  • JWT
  • JWKS
  • App Engine
What I learned
  • Running Python on App Engine (GCP PaaS)
  • Generating key pairs to sign JWTs (AI helped with the utility functions and UI)
  • Session cookies with Flask, scoped across subdomains
How it worksOAuth 2.0
ClientService / userPOST /token · client_id + secret
auth.arvid.engineeringSign JWT with private key{ sub, scope: "read write", exp }
BrowserCookie on .arvid.engineeringVisible to every subdomain
Resource serviceVerify signatureFetches the public key
PublicJWKS endpoint/.well-known/jwks.json

Animation built with Claude Opus 5.5 from my repo, prompted by me.

04 · Toolkit

What I work with.

Languages

  • Python
  • Java
  • SQL

Backend

  • Flask
  • REST APIs
  • Sessions & cookies
  • JWT auth
  • Git

Cloud & infra

  • App Engine
  • Compute Engine
  • Memorystore
  • VPC
  • HAProxy
  • Linux

Data

  • MySQL
  • Redis
  • BigQuery
  • Cloud Logging
  • Data Studio

On the side: I'm a keen amateur in security. I've played with OAuth 2.0, JWT/JWKS and firewall rules, and I like knowing how the systems I build could be attacked.

Available for 2027 graduate roles

Let's build something reliable.

If you're hiring graduates for software or cloud engineering, I'd like to hear from you. Email is the fastest way to reach me.

Email me LinkedIn