public async Task <IEnumerable <JobOfferDto> > GetOffersBySkill(int skillId)
        {
            using (UnitOfWorkProvider.Create())
            {
                SkillTagDto skill = await skillService.GetAsync(skillId, false);

                if (skill == null)
                {
                    return(null);
                }

                return(await jobOfferService.GetBySkills(skill));
            }
        }