The context, in a nutshell is as follow: two recently hired engineers (a colleague and myself) have joined a small project team in our company. I joined the team with the support of my boss as the project's focus is highly interesting in my eyes. My colleague has been hired for the project. The team comprises of two other more senior colleagues.
After a few months of collaboration within the team and observation from my side, I am now convinced that the project faces very high risks. A company wide deployment is scheduled in 2017 and I felt it is my duty to voice my concerns. Same goes for my colleague: we have partially overlapping competences and are very well aligned on our conclusions, and most importantly on the direction we should take to mitigate the risk we see.
At first, collaboration within the team continued as the PM agreed with some of our concerns. However we slowly realized that information was more or less intentionally hidden from us (and I believe a correct understanding of these information is critical to make the right informed decisions). Last week I felt like this was going too far and decided to voice my concerns outside the team and get advices from the outside.
As you guessed that's when the clash happened.
Our technical points have been very well received from managers around us, that gave me confidence to keep pushing for the new solution.
The PM however protects a status quo, as changing now would mean that its direction has been wrong, and used things like "this would mean throwing away the job of 2 people during one and a half year".
A meeting with all parties, including system architects from outside the team and our respective managers has been called on Monday.
The question is : how do I ensure that factual elements are taken into account and how do I try to convince the manager in charge to see that, yes two newcomers want to change what has been done so far, but not just for the fun of it but because they strongly believe in their technical arguments and propose the right solution and direction?