
Sandra Balej
Sandra Balej is a visual effects supervisor. Balej began her career as a finishing artist, honing her skills in assembling and refining visual elements for final shots. This early work laid the foundation for her transition to compositing supervision, where she led teams at several visual effects houses, including Method Studios. Her expertise in compositing enabled her to move into roles as an on-set and production VFX supervisor, where she became responsible for integrating complex digital effects into live-action environments. Her credits include major Hollywood blockbusters such as Mulan (2020), where she served as Compositing Supervisor, and Ant-Man and the Wasp (2018), where she acted as Digital Effects Supervisor. She also worked on Elysium (2013), The Maze Runner (2014), Doctor Strange (2016), and Thor: Ragnarok (2017), handling the assembly of intricate visual sequences. Her work in the Marvel Cinematic Universe continued with television series, including WandaVision (2021), Loki (2021–2023), and Ms. Marvel (2022), where she held various supervisory roles, including Additional VFX Supervisor. The industry has recognised Balej’s contributions through multiple nominations, including two Primetime Emmy Award nods for Outstanding Special Visual Effects in a Season or a Movie. She received these nominations for her work on WandaVision and Loki, where she served as an Additional VFX Supervisor.
- Known for
- Visual Effects
- Gender
- Female
- Credits
- 17 as crew
- Popularity
- 0.5

Street Fighter
Visual Effects Supervisor 2026

Loki
Visual Effects Supervisor 2021

The Fantastic 4: First Steps
VFX Supervisor 2025

BEEF
Visual Effects Supervisor 2023

The Maze Runner
Compositing Lead 2014

Thunderbolts*
VFX Supervisor 2025

Thor: Ragnarok
Compositing Supervisor 2017

Doctor Strange
Compositing Supervisor 2016

Ant-Man and the Wasp
Digital Effects Supervisor 2018

Night at the Museum: Secret of the Tomb
Compositing Lead 2014

Ms. Marvel
Visual Effects Supervisor 2022

Mulan
2D Supervisor 2020

Elysium
Compositing Artist 2013

White House Down
Compositing Lead 2013

Anonymous
Compositing Artist 2011

Voyage of Time: Life's Journey
Compositing Supervisor 2017

Fast Five
Digital Compositor 2011