Senior Systems Developer Salary in Ontario (2025)
56 disclosed records, 2000–2025 · mostly Other Public Sector Employers (55%)
At a Glance
2025
Disclosed
22
2025 Sunshine List
Median Salary
$114,549
-6.3% vs provincial median
Typical Range
$106,867–$119,876
25th–75th percentile
Top Salary
$151,897
Who was the highest-paid employee under the title "Senior Systems Developer" in Ontario in 2025?
The highest-paid record grouped under the title "Senior Systems Developer" on the 2025 Sunshine List was Daniel Cogny at City Of Ottawa – Police Services, with a salary of $151,897; the median among the 22 listed under this title was $114,549.
Take-Home Pay
(After Tax) · 2025 estimate
Federal and Ontario income tax on the 2025 Senior Systems Developer median of $114,549 comes to about 22.1%, leaving roughly $83,737 a year — about $6,978 a month. 22 people were listed under this title in 2025. Across every sector the 2025 median was $122,262, so this position sits about 6% 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
- ~$83,737
- Effective income-tax rate (excl. CPP/EI)
- ~22.1%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~26.9%
- Per month, after tax
- ~$6,978
Where does $114,549 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 |
|---|---|---|
| Municipal Property Assessment Corporation | $113,150 | Pay here → |
Highest Paid
2025
| # | Name | Salary | Total |
|---|---|---|---|
| 1 | Daniel CognySenior Systems Developer | $151,897 | $152,507 |
| 2 | Li ZhaoSenior Systems Developer | $124,984 | $125,250 |
| 3 | Nabih AbboudSenior Systems Developer | $123,940 | $124,550 |
| 4 | Yan JiaSenior Systems Developer / Développeur de systèmes sénior | $122,364 | $122,513 |
| 5 | Ali MamdaniSenior Systems Developer | $121,530 | $121,772 |
| 6 | Man LuoSenior Systems Developer / Développeur de systèmes sénior | $119,876 | $120,025 |
| 7 | Jeremy VreugdenhilSenior Systems Developer / Développeur de systèmes sénior | $117,681 | $117,836 |
| 8 | Vishnu SudhakaranSenior Systems Developer / Développeur de systèmes sénior | $115,319 | $115,461 |
| 9 | Fathima Zahra Mohamed AbdullahSenior Systems Developer / Développeur de systèmes sénior | $114,949 | $115,099 |
| 10 | Gang LuoSenior Systems Developer / Développeur de systèmes sénior | $114,905 | $115,054 |
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. Titles before 2005 were abbreviated at source; the chart starts at 2005.
Data through 2025, the most recent Sunshine List disclosed.