Many things can happen in six months and you could end up not joining the company. Either way, I'm sure you can learn the stack.

Here are some meta-skills and tips that will still be relevant whether you join the company or not and whether you stay there or not:

Reproduced from here: https://news.ycombinator.com/item?id=28422944 with some editing.

Recycling some replies. More context on https://news.ycombinator.com/item?id=26182988

- https://news.ycombinator.com/item?id=19924100 (understanding codebases, etc.)

- https://news.ycombinator.com/item?id=26591067 (testing pipelines, scaffolding, issue templates)

- https://news.ycombinator.com/item?id=22873103 (making the most out of meetings, leveraging your presence)

- https://news.ycombinator.com/item?id=22827841 (product development)

- https://news.ycombinator.com/item?id=20356222 (giving a damn)

- https://news.ycombinator.com/item?id=25008223 (If I disappear, what will happen)

- https://news.ycombinator.com/item?id=24972611 (about consulting and clients, but you can abstract that as "stakeholders", and understanding the problem your "client", who can be your manager, has.)

- https://news.ycombinator.com/item?id=24209518 (on taking notes. When you're told something, or receive a remark, make sure to make a note and learn from it whether it's a mistake, or a colleague showing you something useful, or a task you must accomplish.. don't be told things twice or worse. Be on the ball and reliable).

- https://news.ycombinator.com/item?id=24503365 (product, architecture, and impact on the team)

- https://news.ycombinator.com/item?id=22860716 (onboarding new hires to a codebase, what if it were you, improve code)

- https://news.ycombinator.com/item?id=22710623 (being efficient learning from video, hacks. Subsequent reply: https://news.ycombinator.com/item?id=22723586)

- https://news.ycombinator.com/item?id=21598632 (communication with the team, and subsequent reply: https://news.ycombinator.com/item?id=21614372)

- https://news.ycombinator.com/item?id=21427886 (template for taking minutes of meetings to dispatch to the team. Notes are in GitHub/GitLab so the team can access them, especially if they haven't attended).

- https://news.ycombinator.com/item?id=24177646 (communication, alignment)

- https://news.ycombinator.com/item?id=21808439 (useful things for the team and product that add leverage)

- https://news.ycombinator.com/item?id=20323660 (more meeting notes. Reply to a person who had trouble talking in corporate meetings)

- https://news.ycombinator.com/item?id=22715971 (management involvement as a spectrum)

- https://news.ycombinator.com/item?id=25922120 (researching topics)

- https://news.ycombinator.com/item?id=26147502 (keeping up with a firehose of information)

- https://news.ycombinator.com/item?id=26123017 (fractal communication: communication that can penetrate several layers of management and be relevant to people with different profiles and skillsets)

- https://news.ycombinator.com/item?id=26179539 (remote work, use existing tooling and build our own. Jitsi videos, record everything, give access to everyone so they can reference them and go back to them, meetings once a week or two weeks to align)

Write better. Always.