  We present the calculation of the impact factor for the $\gamma^{(*)}\to
q\bar{q}$ transition with one loop accuracy in arbitrary kinematics. The
calculation was done within Balitsky's high energy operator expansion. Together
with our previous result for the $\gamma^{(*)}\to q\bar{q} g$ Born impact
factor it allows one to derive cross-sections for 2- (one loop) and 3-jet
(Born) difractive electroproduction. We write such cross sections for the 2 and
3 jet exclusive diffractive electroproduction off a proton in terms of hadronic
matrix elements of Wilson lines. For the 2-jet cross section we demonstrate the
cancellation of IR, collinear and rapidity singularities. Our result can be
directly exploited to describe the recently analyzed data on exclusive dijet
production at HERA and used for the study of jet photoproduction in
ultraperipheral proton or nuclear scattering.
