Embodiments of the invention include an optoelectronic package that allows for in situ alignment of optical fibers. In an embodiment, the optoelectronic package may include an organic substrate. Embodiments include a cavity formed into the organic substrate. Additionally, the optoelectronic package may include an actuator formed on the organic substrate that extends over the cavity. In one embodiment, the actuator may include a first electrode, a piezoelectric layer formed on the first electrode, and a second electrode formed on the piezoelectric layer. According to an additional embodiment of the invention, the actuator may include a first portion and a second portion. In order to allow for resistive heating and actuation driven by thermal expansion, a cross-sectional area of the first portion of the beam may be greater than a cross-sectional area of the second portion of the beam.