About SmartTel Plus

SmartTel Plus is a European tech group headquartered in Tallinn, with offices in Germany, Italy, Poland, and Latvia. We create truly autonomous AI solutions - voice and chat agents that don’t just respond but act to achieve real business goals.

Our platform combines a powerful AI engine with full telecom infrastructure, including SIP trunking, phone numbers, call routing, and SMS/RCS messaging. This means our AI agents work efficiently from day one, with enterprise-grade security, compliance, and no lengthy training required.

Join us to work with cutting-edge AI and telecom technology, gaining full control to launch, manage, and evolve AI agents independently.

In this role you will:

• Develop supportive platform APIs for customer details, billing processes and product configuration;
• Contribute to Core Platform Systems, including Customer Management, Product Delivery, IAM Centre and the Billing Integration Layer;
• Build services and libraries that become shared across all engineering teams;
• Focus on security-hardened, efficient solutions, following best practices in the industry;
• Additionally, maintain legacy PHP/Go services, with main focus on stability and security, but also on minor product features.

Tech stack:

• Dev: Go, PHP (legacy), PostgreSQL, MongoDB, Redis, RabbitMQ;
• Ops: GCP, Docker, Kubernetes, GitLab/GitLab CI, Prometheus, Grafana, ELK.

We’re looking for a person who has:

• 2+ years of commercial experience in backend development in any language;
• 1+ year of experience with Go (commercial or non-commercial);
• Solid understanding of backend design principles (API design, modularity, testing, error handling);
• Basic familiarity with the Go ecosystem and community conventions;
• Experience with SQL and NoSQL databases and fundamental data-modelling concepts;
• Ability to write maintainable unit tests for critical paths.

Some nice-to-have skills:

• Experience with PHP frameworks (Yii2, Symfony);
• Practical experience with DDD;
• Understanding of distributed-systems patterns;
• Strong debugging/troubleshooting mindset; ability to trace and resolve production issues;
• Ownership attitude and familiarity with monitoring, alerting, and incident handling;
• Use of AI tools and agents to speed up development.

Pay range and compensation package

• EUR 4,000–4,500 gross, depending on experience and skills;
• Health insurance after the probation period.

Why Apifonica?

• Exciting work in a fast-growing international company;
• Opportunities to gain cross-functional and international experience;
• Professional growth and development opportunities;
• Flexible hybrid schedule — 2 days per week in our modern office in Riga, the rest remotely.

We are an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.