Freelance Backend Developer
Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Nov 4, 2025. Flying Bisons scores C on the Alion truth index.
Flying Bisons is a leading Digital Consulting & Delivery company based in the heart of Europe, Warsaw. Our mission is to help our clients to Unleash Digital Potential™. We discover, define, design, and develop world-class digital products that drive business results for our clients, shaping digital experiences for millions of people around the world.
We stand out due to our end-to-end process that allows us to approach each and every challenge with confidence that we can deliver the best results. Our expertise includes Research, Digital Strategy, Branding, Content (Written, Photos, Videos), Product Design, Web & Mobile Development, Data Analytics & AI.
Join our 120-people team to co-create industry-defining products and heart-racing experiences for the biggest brands (Mercedes AMG, IKEA, KFC, eObuwie, Żabka, Sanofi, Zain) and disruptive startups (like Booksy, Nethone, Telemedi, or DevSkiller)!
We're building a curated network of talented freelanceBackend Developers that we can call upon for existing and future projects. When you apply to join our freelancer base, you will be evaluated and kept on file. You may not be contacted immediately. When a project matches your specific expertise, you’ll be invited to participate and can choose to accept or decline based on your availability. Ifyou're interested in becoming part of our talent pool, please submit your CV. We’ll get in touch as soon as an opportunity aligned with your skills arises.
Are you self-driven, and dependable professional? If so, we look forward to hearing from you!
Contract type: B2B
What skills and experience do we expect?
Your Profile & Skills Required
You have 2+ years experience in web development
You know PHP (including Symfony framework) & SQL
You have experience in developing RESTFull APIs
You have a good understanding of business and technology
You know the basics of Docker & Git
You can optimize the application
You want to learn and develop by implementing challenging and ambitious projects
You communicate in English (B2+ level) and Polish
Nice to Haves
Experience in Sulu CMS or Sylius framework
PHPUnit, Behat, PHPSpec
Experience in working with the cloud environment
CI / CD experience
Domain-Driven Design and CQRS