Senior Software Engineer Interview Experience - Boston, Massachusetts
Process
Two rounds. The first was a 30-minute hiring manager interview. I had a good conversation with him about culture fit and behavioral questions.
Second round: A 1-hour technical interview with two senior folks (SRE VPs at Fidelity). They went over SRE-related questions, scalability, and some Python-level questions about abstraction, encapsulation, etc.
Questions
Given N files, write a Python program to filter out phone numbers in each file with some other string and figure out the time complexity and space complexity.
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Interview Statistics
The following metrics were computed from 7 interview experiences for the Fidelity Investments Senior Software Engineer role in Boston, Massachusetts.
Success Rate
Fidelity Investments's interview process for their Senior Software Engineer roles in Boston, Massachusetts is fairly selective, failing a large portion of engineers who go through it.
Experience Rating
Candidates reported having good feelings for Fidelity Investments's Senior Software Engineer interview process in Boston, Massachusetts.
Fidelity Investments Work Experiences
- 5.0Great place to work and be valued. Definitely a bit slowSenior Software Engineer • Current EmployeeBoston, Massachusetts, United StatesSeptember 16, 2025Pros: You are valued for who you are, and encouraged to move around.Cons: A lot of the BUs have a ton of old tech, and it feels like we are behind many other industries. That's just finance to some degree, though.
- 3.0Senior Software EngineerSenior Software Engineer • Current EmployeeBoston, Massachusetts, United StatesMarch 7, 2025Pros: Good work-life balance at the firm.Cons: The hybrid working model is tiring.
- 4.0Good 401k, Limited WfhSenior Software Engineer • Current EmployeeBoston, Massachusetts, United StatesFebruary 20, 2025Pros: Company matches 7% for 401K.Cons: Work From Home option is limited.
Fidelity Investments Interview Questions
