Powerlifting is amazing, and it is amazingly safe [1]. It is the perfect complement to a programming job, because you can bang out a massive workout in the morning and recover physically the rest of the day. Take "advantage" of your sedentary opportunity!
Sports Injury Rates (Hamill 1994)
Sport Injuries (per 100 hours)
Soccer (school age) 6.20
UK Rugby 1.92
USA Basketball 0.03
UK Cross Country 0.37
Squash 0.10
US Football 0.10
Badminton 0.05
USA Gymnastics 0.044
USA Powerlifting 0.0027
USA Volleyball 0.0013
USA Tennis 0.001
Weight Training 0.0035 (85,733 hrs)
Weightlifting 0.0017 (168,551 hrs)
However, my one piece of advice from personal experience: Avoid doing switch-grip deadlifts (recipe for distal biceps tendon rupture [2]). Use hook grip instead. If you can't hold heavy weight, then modest training with Captains of Crush equipment will have immense benefit. Even just being able to rep a #2 gripper will be enough to take you beyond a 500lb deadlift.
[1] http://www.exrx.net/WeightTraining/Safety.html
[2] https://youtu.be/pZgxkE-2QAw