2021
Foundations
Master's — Åbo Akademi University
Governance of Digitalization — where the data-governance lens started.
Building in Public · Europe
Tong Nie
Data Engineer & Builder
By day, I orchestrate data. By night, I ship ideas. Same machine, different rules.
Ask my AI — answers liveFive years,
learn govern at scale.
01 · Experience
2023
Liftoff
Data Analyst · Neste
Into industry — first production pipelines and the dashboards that turned them into decisions.
2024
0 → 1
Analytics Engineer · PostNord
Built the enterprise Power BI platform from scratch — reporting latency under 3 hours, manual Excel gone.
2025
Optimize
Analytics Engineer · PostNord
Tuned it — streaming pipelines, performance tuning, and cost-efficiency at platform scale.
2026
Scale
Data Engineer · Basware
Standardized deployment across 1,000+ pipelines — shared libraries, DAB templates, CI/CD quality gates.
02 · Selected Work
Two pipelines over this site’s own data — a private knowledge base compiled into a token budget behind six gates, and a Databricks medallion over the traffic the site produces.
DatabricksDelta LakeSupabaseEvals View case studyOne grid API, two clouds — a metadata-driven medallion lakehouse for Finland's grid data, built on Azure Data Factory and rebuilt declaratively on AWS.
DatabricksDelta LakeAWS + AzureTerraform View case studyValidation + release pipeline for Power BI — automated quality gates on Microsoft Fabric.
Azure DevOpsMicrosoft FabricPower BI View case studyMaster's-thesis ML: predict a reservation's rating from booking data, with a purpose-built cost-aware metric.
Pythonscikit-learnXGBoostKeras View case study03 · Writing
The best code is the code you never wrote.
- 01 I Built My Chatbot's Knowledge Like a Lakehouse judgment −1 text dump
- 02 Validate Once, Then Trust the Types defensive −scattered checks
- 03 Counting Rows Without Paying for Them field notes −1 full scan
04 · Talk to me
See how it thinks.
Not a résumé chatbot — it answers with the reasoning behind the work. Here's one, live. Then ask your own.
Transcript — live
You
What's an engineering decision you're proud of?
Tong's assistant
A real question, a real answer — press Enter to send.
I'm here to