Senior Back-End Engineer, Node.js

This is a fully remote position, open to applicants in Poland.

📋 Description

• Design and develop backend microservices for the squad’s modules, such as Identity/RBAC/MFA, number search, purchase and porting, onboarding automation, CDR, and billing pipelines.

• Integrate with external carriers, telecom, and third-party APIs, including Operator Connect, number/porting providers, ServiceNow, and payment and billing systems.

• Implement event-driven flows and long-running workflows using tools like Kafka and Temporal.

• Create automated tests, engage in code reviews, and adhere to CI/CD practices.

• Work closely with Business Analysts to refine requirements and establish acceptance criteria.

• Collaborate with Frontend Engineers to define and uphold API contracts.

⛳️ Requirements

• Over 5 years of backend development experience utilizing Node.js and TypeScript.

• Strong expertise in microservices architecture and API design, including REST and GraphQL.

• Solid experience with relational databases, particularly PostgreSQL, along with schema and data modeling.

• Proven ability to integrate third-party and external APIs effectively.

• Hands-on experience with event-driven systems, specifically Kafka.

• Familiarity with workflow orchestration tools such as Temporal.io.

• Proficient in containerization and orchestration technologies like Docker and Kubernetes (EKS).

• Practical experience with AWS cloud services.

• English proficiency at a B2 level or above.

• Nice to have: AWS certification (e.g., AWS Certified Developer), Node.js-related certifications, and experience with VoIP/telecom systems (SIP, signaling, voice infrastructure).

🏝️ Benefits

• Culture of relentless performance: become part of an unstoppable technology development team boasting a 99% project success rate and over 30% year-over-year revenue growth.

• Competitive pay and benefits: enjoy a comprehensive compensation and benefits package that includes health insurance, language courses, and a relocation program.

• ForeverRemote work culture: take advantage of the flexibility associated with remote work.

• Growth mindset: benefit from a variety of professional development opportunities, including certification programs, mentorship, talent investment programs, internal mobility, and internships.

• Global impact: work on significant projects for leading global clients and influence the future of various industries.

• Welcoming multicultural environment: join a dynamic global team and thrive in an inclusive, supportive work atmosphere that encourages open communication and regular team-building social events.

• Social sustainability values: be part of our sustainable business practices focused on five pillars, which include IT education, community empowerment, fair operating practices, environmental sustainability, and gender equality.