Assistant Engineer Scientist Technical Officer Salary in Ontario (2025)
262 disclosed records, 2006–2025 · mostly Ontario Power Generation (71%)
At a Glance
2025
Disclosed
21
2025 Sunshine List
Median Salary
$120,617
-1.3% vs provincial median
Typical Range
$114,803–$126,486
25th–75th percentile
Top Salary
$157,649
Who was the highest-paid employee under the title "Assistant Engineer Scientist Technical Officer" in Ontario in 2025?
The highest-paid record grouped under the title "Assistant Engineer Scientist Technical Officer" on the 2025 Sunshine List was Mohamedali Hirani at Ontario Power Generation, with a salary of $157,649; the median among the 21 listed under this title was $120,617.
Take-Home Pay
(After Tax) · 2025 estimate
At the 2025 median salary of $120,617, a Assistant Engineer Scientist Technical Officer keeps roughly $87,240 after income tax, CPP and EI (about 27.7% all-in), or about $7,270 a month. 21 people were listed under this title in 2025. Across every sector the 2025 median was $122,262, so this position sits about 1% below it. Members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less after pension contributions, which this estimate leaves out.
- Estimated net pay
- ~$87,240
- Effective income-tax rate (excl. CPP/EI)
- ~23.1%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~27.7%
- Per month, after tax
- ~$7,270
Where does $120,617 rank on the Sunshine List? →
Estimate only: 2025 federal and Ontario rates, basic personal amounts, Canada employment amount and CPP/EI credits; single, employment income only, salary treated as full-year income. Ignores pension contributions (OMERS, HOOPP, OTPP, OPTrust and similar plans lower actual take-home), union dues, RRSPs and benefits.
Median by Year
2005–2025
Where They Work
2025 · employers with 5+
| Employer | Median | Detail |
|---|---|---|
| Ontario Power Generation | $120,617 | Pay here → |
Highest Paid
2025
| # | Name | Salary | Total |
|---|---|---|---|
| 1 | Mohamedali HiraniAssistant Engineer/Scientist/Technical Officer | $157,649 | $158,288 |
| 2 | Agata SzeremetaAssistant Engineer/Scientist/Technical Officer | $145,013 | $145,662 |
| 3 | Matthew StaseffAssistant Engineer/Scientist/Technical Officer | $141,282 | $141,959 |
| 4 | Ajanan NavaratnarajahAssistant Engineer/Scientist/Technical Officer | $135,916 | $136,579 |
| 5 | Lemuel PaduaAssistant Engineer/Scientist/Technical Officer | $127,051 | $127,657 |
| 6 | Sean VidottoAssistant Engineer/Scientist/Technical Officer | $126,486 | $126,486 |
| 7 | Purba SarkarAssistant Engineer/Scientist/Technical Officer | $124,344 | $124,954 |
| 8 | Alexandru ProdanAssistant Engineer/Scientist/Technical Officer | $123,497 | $124,208 |
| 9 | Taimur ShoaibAssistant Engineer/Scientist/Technical Officer | $121,641 | $122,266 |
| 10 | Sukhmeet SinghAssistant Engineer/Scientist/Technical Officer | $121,552 | $122,169 |
By Year
Related Positions
About these figures
Source: Ontario’s Public Sector Salary Disclosure (the “Sunshine List”), which names every public-sector employee paid $100,000 or more in a calendar year. Figures are disclosed salaries, not market compensation: anyone in this position earning under $100,000 does not appear, so medians here sit above the true median for the job.
Medians and percentiles use salary paid (benefits excluded), computed over records whose filed job title was normalized into this position. Titles are as each employer filed them; spellings, word order and bilingual forms are merged. Employers and years with fewer than five people show counts only.
Data through 2025, the most recent Sunshine List disclosed.