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Senior Software Engineer AI/ML Enterprise SaaS

Pony Express HQ helps businesses uncover every revenue opportunity from every customer. Hundreds of businesses choose Pony Express HQ to capture all customer contacts, activity, and engagement to drive actionable insights and engagement across SMS marketing channels.


As a Senior Backend Engineer, you will work with a vast amount of business data, design APIs, write machine learning and automation code, and build scalable systems.


We value ownership highly - the ability to take an idea through all the stages from conception to shipping a product. This reflects throughout our company but is especially true in engineering. As an engineer at Pony Express HQ, you'll be a part of a highly independent and autonomous team. Since we're building out a robust data layer that needs to be presented elegantly to the end user, you'll be working with a large array of different technologies and fields. Expect lots of interesting challenges!



  • Design, implement, test, and maintain features in the following core systems within our platform

  • A scalable, fault-tolerant system for synchronizing millions of data records into various systems

  • An intelligent system for matching activity (social media, e-mails, calls, text messages), incorporating both complex business rules and using Machine Learning to leverage the company’s social graph

  • Our core infrastructure, including areas such as user management, authentication, and authorization within our product.

  • Build monitoring and alerting tools to prevent our application from being unavailable; be part of weekly on-call rotations to quickly resolve any infrastructure issues whenever our application becomes unavailable

  • And yes, become a product expert and customer champion


  • 2+ years of professional experience working on backend systems in an enterprise environment

  • Experience programming in Javascript

  • Experience with an enterprise-grade stack for scalable apps including messaging broker, in-memory storages, NoSQL and key-value databases

  • Strong knowledge of TDD, Unit and automated tests paradigms

  • Possess a DevOps as a Culture mindset, AWS experience is a plus

  • Strong knowledge of HTTP stack and REST principles for integration with 3rd-party vendors

  • Bachelor’s Degree in Computer Science, Computer Engineering, or in a closely related discipline


Founded in 2017 and based in California, Pony Express HQ is a fast-growing startup building the next-generation smart marketing automation solution for messaging platforms.


We feel very privileged to have found ourselves such a talented and passionate team, and we welcome you to come and meet the founders, team and see and feel that for yourself.

Location: Ankara office


Interested in joining us?

Please send a cover letter & resume to

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