Job Description:

At AT&T we’re redefining the future of communication by connecting people to greater possibility - with expertise, simplicity, and inspiration. At the heart of our purpose lies a diverse workforce of 130,000 people and a culture that aspires to serve customers first, act boldly, move faster, and win as one.

Our Product Development group, part of AT&T’s Technology Services (ATS) organization, is responsible for building software-based products, services, and platforms that our customers love and need. Harnessing technology and rebuilding software expertise, the team is inspiring simplicity with projects that deliver revenue and cost savings opportunities.

This is a hybrid-flex position requiring presence in the office 1-3 times per week.

Job Overview

As a Senior Full-Stack Developer, you will play a critical role in designing, developing, and maintaining high-quality software solutions to transform industry-standard order, delivery, and assurance management systems.

In this role, you will collaborate closely with Product Management, Business Systems, and Operations teams to develop and enhance AT&T’s software platforms, working on new features, enhancements, and defect resolution throughout the development lifecycle.

You will independently deliver robust, scalable systems, contribute to technical discussions, and mentor less experienced team members in a collaborative, agile environment focused on continuous improvement and innovation.

Core Responsibilities

• Design, develop, and maintain scalable applications with deep expertise in one of: Java (Spring Boot), Python (FastAPI), or Node.js (Nest); with working knowledge of the other two.

• Take ownership of key technical deliverables across the full software development lifecycle (SDLC).

• Apply and advocate best practices in software engineering, code quality, testing, and DevOps.

• Leverage AI-driven tools (e.g., GitHub Copilot, LLMs, RAGs) and stay current with emerging technologies.

• Implement data persistence solutions using SQL and NoSQL databases (CosmosDB, MongoDB, PostgreSQL, Snowflake, Databricks).

• Use modern testing frameworks (Playwright, Cypress), code review, static analysis (Lint, Prettier, Veracode, Sonar Qube), and CI/CD pipelines (GitHub Actions, Terraform).

• Design and implement APIs (REST, OpenAPI/Swagger) and support event-driven architectures (Kafka, messaging services).

• Contribute to cloud-native development using Azure, Docker, and Kubernetes.

• Participate in agile processes (Agile/Scrum, SAFe, Kanban) and team ceremonies.

• Collaborate with stakeholders and team members to translate business requirements into effective technical solutions.

• Mentor and support junior developers.

Skills, Knowledge, and Experience

Day-to-Day

• Hands-on coding, troubleshooting, and implementation across the stack.

• Participating in code reviews and technical discussions.

• Collaborating in agile ceremonies, team meetings, and cross-functional projects.

• Mentoring and supporting junior engineers.

Technical Skills

• Deep expertise in one of: Java (Spring Boot), Python (FastAPI), or Node.js (Nest); with working knowledge of the other two.

• Strong experience with SQL and NoSQL databases (CosmosDB, MongoDB, PostgreSQL, Snowflake, Databricks).

• Experience with event-driven architecture, Kafka, and messaging services.

• Proficiency in API design: REST, Swagger, OpenAPI.

• Experience in automated testing: Playwright, Cypress.

• Familiarity with code quality and security tools: Lint, Prettier, Veracode, Sonar Qube.

• Practical knowledge of CI/CD automation (GitHub Actions, Terraform) and cloud-native platforms (Azure, Docker, Kubernetes).

• Solid understanding of SDLC and agile methodologies (Agile/Scrum, SAFe, Kanban).

• Familiarity with enterprise platforms: Service Now, Salesforce, TM Forum (highly desirable).

Additional Desirable Experience

• Experience with AI-driven developer tools.

• Involvement in migration or modernization of legacy systems.

• Experience working in large, distributed enterprise environments.

Education

Bachelor level degree or equivalent in Computer Science, or related field of study.

Location

This is a hybrid-flex position requiring presence in the office 1-3 times per week.

Compensation:

Salaryranges between 3 841EUR - 5 700EUR gross monthly. The actual offer is based on skills, experience and knowledge.

Benefits

A career with us, a global leader in communications and technology, comes with big rewards. We offer a competitive salary plus an annual company performance bonus. Once you are a part of the team, you will gain some amazing perks and benefits including wellness & leisure time contribution, sickness compensation plan, premium medical services, family friendly benefits as well as meal contribution and an extra week of vacation (…and much more).

Ready to find out more? Apply today!

Weekly Hours:

40

Time Type:

Regular

Location:

Kosice, Slovakia

It is the policy of AT&T to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made.