Senior REST API Developer for CODE Worldwide (Kyiv)

Kyiv, Amosova, Ukraine


Code is a digital transformation business. We help our clients to invent a new future for their marketing through data and technology. We work at the intersection of technology, marketing, data, media and user experience. We offer our clients services in Transformation Consultancy, Data Engineering, Customer Experience Management technologies and Marketing Technology.

We also develop and maintain our own Forrester-recognised Marketing Technology solution, adZU, which is used by 10,000 businesses worldwide.

Our key clients include Best Western, Castrol, Christie’s, Domino’s, Jaguar Land Rover, L’Oreal, Mercedes-Benz, Mothercare, OMD, PHD, Samsung and Telstra. Code has a global presence and employees spanning nine cities, located in the UK, Europe, North America, China, Singapore and Australia. To learn more visit Code is the data and technology division of Omnicom Precision Marketing Group (OPMG) and provides technology and data innovation to agency brands RAPP, Proximity, Critical Mass, Organic, Javelin and Targetbase.

We are also the leading provider of technology and data solutions to Omnicom Media Group and responsible for the development of Omnicom’s integrated technology solution. Culturally, Code is an innovative, fast moving, exciting, occasionally demanding place to work.

Read more about the client


On behalf of Code WorldWide, Ciklum is looking for Senior REST API Developer to join Kyiv team on full-time basis.


  • Converting internal HTTP REST/RPC-like API’s into high quality public REST API’s
  • Elaborate and agree the standards with Solution Architect on developing, testing, documenting and delivering the API’s
  • Supervise the standards to be followed through work with Senior Tech Lead and individual teams
  • Primary people to work with: Solution Architect, Senior Tech Lead, Tech Leads


  • Experience with SDLC for public REST API’s with .NET technology stack
  • Understanding the sense of OOP/OOD/DDD/SOLID
  • Using of OOP, DDD and enterprise patterns
  • ASP.NET+MVC experience
  • MS SQL database experience and ORM technologies such as LINQ, EF
  • NoSQL databases
  • Performance optimization
  • WCF experience
  • RPC-like and REST Web API design
  • TDD practices
  • CI/CD practices
  • SSO, OAuth2


  • Micro-service architecture experience
  • Distributed and Message based systems
  • Multi-tenant application development experience is a huge plus
  • CQRS and Event Sourcing Experience
  • Micro-service architecture experience
  • HTML5/CSS3/JavaScript and AJAX experience
  • SPA (Single Page Application)
  • MVVM library

Personal skills

  • Clever personality
  • Strong spirit skills set: conflict resistant, self -motivated, result-oriented, responsible, honest, “open”, courageous

What's in it for you

  • Getting experience in the most complex product development environment
  • Building game changing solutions and seeing the results of your work on a daily basis
  • Transparent career path: continuous professional growth from Intern to Senior Dev/QA/PM with the help of Skill Matrix
  • Knowledge sharing: Dev Guilds, QA Guilds
  • Education:
  • Remote work policy (conditions may apply):
    • 1 day per week: work from home option is available.
    • 1 month per year: work from any Code location is available (London, Sydney, NY, Malaga)
  • Fun:
    • Fruits once per week.
    • Team buildings: sub team-buildings due to a successful release, Spring party, Code Anniversary, Winter party
  • Innovations:
    • AWS Sandbox to play with any Cloud technologies.
    • Hackathons