We are seeking a skilled Mid-Level Back-End Engineer to join our growing development team. You will work on a system that utilizes PHP Symfony-based logic and communicates via REST APIs. This role is ideal for a motivated developer with a strong understanding of back-end development principles, excellent problem-solving skills, and a passion for delivering high-quality, scalable solutions.

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As part of the team, you will collaborate closely with front-end developers, product managers, and other stakeholders to design, develop, and maintain back-end services that power our applications.

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As an individual, you will need to be cool, calm and collected under pressure. We value the ability to be analytical and detail-oriented. We expect everyone to be friendly and team players.

 

Location: Tallinn (In-office or Hybrid)

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About us

Aderize was founded on the vision that people and brands deserve better ads. 

And what a surprise, our ads resonate better with consumers resulting in much better ad performance. Now better ads aren't just about making the creatives look better. To get the creatives to load quicker while creating less traffic  advances had to be made in how the ads are delivered and how they are compressed. To reduce the amount of on-device power used we had to adopt different animation and interaction methods and to become carbon neutral we had to build our own modern ad server from the ground up. Being carbon neutral only answers half the challenge, we also had to make sure we were super efficient using the minimum power necessary. Then reporting had to be upgraded so that super rich metrics are available for all creative. 

 

Moving the needle on any one of these areas is a mammoth task and I’m so proud of all our contributors across our global team for achieving all this progress in just two and a half years.

 

In 2025 we are addressing the self service challenges that face Publishers and Advertisers alike and introducing new tools and services to ensure all have rapid access to brilliant creative without the traditional delays. We are also introducing new levels of dynamics especially for retail and Direct Response.

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Responsibilities

• Develop and maintain the back-end system using PHP Symfony framework.

• Design, implement, and optimize REST APIs for seamless communication between systems.

• Write clean, efficient, and well-documented code following best practices.

• Troubleshoot and debug issues to ensure optimal application performance.

• Collaborate with cross-functional teams to gather requirements and deliver features on time.

• Participate in code reviews to maintain code quality and share knowledge.

• Work on optimizing system performance and scalability.

• Contribute to the overall architecture and technical direction of the platform.

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Skills & Experience

Skills:

• HTML5

• SQL

• PHP

• Javascript

• NodeJS

• Git

• Symfony/Laravel

 

Good to know:

• GraphQL

• Docker

• Vue.js

• Python

 

Experience:

• 3+ years of experience in back-end development, with a focus on PHP and Symfony framework.

• Strong understanding of REST API design and development.

• Experience working with databases such as MySQL or PostgreSQL, including schema design and query optimization.

 

What we offer

• Celebration & Time Off: Annual holiday, birthday day off, and paid vacation days for personal milestones (e.g., childs first school day, marriage).

• Health & Wellness: Private health insurance with Confido or monthly sports compensation with Stebby.

• Sick Leave: Paid sick leave from the 2nd day.

• Learning & Development: Generous learning & development package (personal development plan & trainings, company-wide knowledge sharing & trainings).

• Working Environment: A comfortable workspace in the city center.