I have more than four years of backend engineering experience, but I currently work at a non-tech organization and have been struggling to get interview calls from product and technology companies. Earlier in my career I received more calls, but I often got stuck in the final interview rounds.
My current role has limited new engineering work, so I've started contributing to open-source projects to strengthen my portfolio. I'm also interested in moving toward C++ and have already had pull requests merged in projects such as jQuery and llama.cpp.
For people who used open source to change jobs: how much did it actually help, and how long did you contribute before seeing results? Is it worth spending the next few months building a stronger open-source record, or do the benefits eventually level off?
4 Answers
In one case, consistent contributions over roughly five months helped someone move from a bank to a product company. They made two or three relevant pull requests each week, and after about four months recruiters began noticing their work. The biggest improvement came from having production code they could discuss, especially around architecture, database changes, and trade-offs. The returns seemed to level off after about six months, so it’s worth setting a clear goal rather than contributing indefinitely.
Open source usually isn’t a substitute for professional experience. Hiring teams tend to focus more on your seniority, job history, and the technologies you used, then test whether you can actually work at the level required. Contributions help most when they are relevant, substantial, and give you something concrete to discuss in interviews.
Could you take a look at my résumé? I’m trying to understand what might be holding me back from getting interviews.
If you’re repeatedly reaching the final round but not getting offers, open source may not be the main issue. It could be worth reviewing your interview performance, communication, system-design depth, and the way you present your past backend work. Open source can strengthen your story, but it probably won’t fix a final-round gap by itself.
It can definitely help, but the quality and relevance matter more than the number of commits. One meaningful feature, bug fix, or design-related change in a project using your target stack is more useful than a long list of minor documentation or formatting changes. You can use the contribution to explain your technical decisions during system design and coding interviews.
I’ve already had a bug fix merged into jQuery and also contributed to llama.cpp. I’m mainly trying to move toward C++ and make those contributions useful in interviews.