PHP Backend Developer; Mid-Senior

• We’re fair — we believe that fairness and respect drive both efficiency and team motivation.
• We’re dedicated — we work hard for our own results, but we work harder for our clients.
• We’re honest — we say things as they are, honestly and directly.
• We’re courageous — we have enough determination and drive to do our best work, take risks, test and try again.
• We’re team lovers — we love to share, help each other and to be an active part of the team.

In Tappx we keep growing and, therefore, we are looking for new talented people to join our
SSP TECH team in our IT department.

Your mission will be:

• You will design, implement and maintain SSP projects with different degrees of demand in terms of complexity and high scalability requirements.
• As well as improvements and evolution of existing projects.

And, as a
PHP Backend Developer
your main tasks will be:

• Build and maintain complex & high scalable technical solutions.
• Design, build and maintain internal tools in multiple PHP Frameworks / pure php. From intranets to small apps to test new products.
• Maintain or migrate to Slim, projects built with other PHP Frameworks.
• Take ownership of everything you work on and play an active role in defining features and requirements. Also implementing best practices for your projects.
• Keep yourself up-to-date about new technologies and you are interested in learning more about Ad Tech.
• Utilize agile methodologies and adhere to coding standards, procedures and techniques while contributing to the technical code documentation.
• Research and evaluate solutions and make recommendations to the product owner.
• Measure the impact of new features, interpret key metrics and collaborate with the data team for data-driven decision making.
• Help your team to plan and estimate deliveries both short and long term.
• Use quality standards.
• Use tests to check your code.

Your Dream Job Awaits at Techsoulogy! 🚀

📄 Indefinite Contract with Competitive Conditions

⏰
Flexible Working Hours
(Take Control of Your Schedule) with core time

🏢
Hybrid Model
in Barcelona (1 day in the office and the rest teleworking) or
100% Remote Work
Anywhere
in Spain

🏙 Cool HQ Offices in Barcelona and Co-Working in Madrid

Home or office? Both!

Private health insurance

English and Spanish classes

Employee referral program

Regular team building activities

Internal Talks

Giving back together

Surprise perks

Save while you spend

We are looking for if you have:

• Minimum experience of 4 years programming in PHP.
• Experience in API integration. Minimum experience of 2 years working with MySQL.
• Ability to write efficient, scalable, secure, clear and well documented code.
• Flexibility when working with both PHP frameworks and pure PHP.
• Strong analytical skills.
• Knowledge of Frameworks such as Slim, Laravel or Symfony Frontend development. JS (ES5-ES6), HTML5, CSS.
• Valuable knowledge of No
  
  SQL Key/Value DB (Redis, Aerospike, etc).
• Valuable knowledge of .Net (C#)

Tappx is a fast-growing AdTech firm offering innovative monetization, user acquisition, and advertising solutions for apps, web, and CTV. Its proprietary technology helps publishers maximize ad revenue while ensuring brands and agencies benefit from enhanced trust and transparency. The Tappx platform processes 65 billion+ ad requests per month worldwide.

Besides monetization, Tappx drives performance growth with advanced programmatic and user acquisition solutions. Advertisers scale efficiently with premium direct and owned inventory, KPI-driven optimization, and high-performing ad creatives. With flexible CPC, CPA, or CPI models, brands only pay for results while receiving tailored strategies and expert support.

Tappx has earned top industry recognition. In 2025, it was shortlisted again in The Financial Times’ FT1000:
Europe’s Fastest Growing Companies report. Previously, it ranked Europe’s 2nd fastest-growing advertising company (FT1000, 2020), won Best AdTech Company to Work For in Spain (PS Awards, 2023), and was a finalist for SME of the Year (CEPYME, 2022). Founded in 2013 by Daniel Reina (CEO) and Antonio Hervás (CTO), Tappx continues to push the boundaries of digital advertising.

SSP Frontend Developer / SSP Backend Developer