Take one of the following eastbound S-Bahn lines:
Leave at the stop Leuchtenbergring. From there it is a 3 minutes walk to the office building.
Instead of travelling underground by S-Bahn, those who can spend a bit more time and like sightseeing may use the Tram line 19 from main station to the stop Ampfingstr.
Either take a 10 minutes walk to the office or proceed with the S-Bahn as for travelling from main station and leave at the next stop Leuchtenbergring.
If you prefer walking then exit the Ostbahnhof towards the Friedenstraße, turn left into the Friedenstraße and walk along the rails until you meet Berg-am-Laim Str. Turn left and watch out for the Dingolfinger Straße at the next traffic light on the opposite side.
Take the S-Bahn S8 from the München Flughafen towards München centre and leave at the stop Leuchtenbergring.