Senior Back-End Engineer (Node.js) at Miratech in Kyiv, Kyiv, Ukraine

Company Description

Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the leading edge of technology, remain nimble even as a global leader, and create technology that helps our clients further enhance their business. We are a values-driven organization and our culture of Relentless Performance has enabled over 99% of Miratech's engagements to succeed by meeting or exceeding our scope, schedule, and/or budget objectives since our inception in 1989.

Miratech has coverage across 5 continents and operates in over 25 countries around the world. Miratech retains nearly 1000 full-time professionals, and our annual growth rate exceeds 25%.

Job Description

We are looking for a Senior Backend Engineer to join our team and contribute to the development of a new unified enterprise platform for a B2B communications provider. The platform consolidates multiple legacy customer portals into a single solution that supports the full commercial lifecycle for telecom customers

Responsibilities:

• Design and build backend microservices for the squad’s modules (Identity/RBAC/MFA, number search, purchase and porting, onboarding automation, CDR and billing pipelines)
• Integrate with external carrier, telecom, and third-party APIs (Operator Connect, number/porting providers, ServiceNow, payment and billing systems)
• Implement event-driven flows and long-running workflows (Kafka, Temporal).
• Develop automated tests, participate in code reviews, and follow CI/CD practices
• Collaborate closely with Business Analysts to refine requirements and acceptance criteria
• Work with Frontend Engineers to define and maintain API contracts

Qualifications

• 5+ years of backend development experience with Node.js and TypeScript
• Strong background in microservices architecture and API design (REST and GraphQL)
• Solid experience with relational databases, including PostgreSQL and schema/data modeling
• Proven track record of integrating third-party and external APIs
• Hands-on experience with event-driven systems, including Kafka
• Experience with workflow orchestration tools such as Temporal.io
• Proficient in containerization and orchestration using Docker and Kubernetes (EKS)
• Practical experience working with AWS cloud services
• English proficiency at B2 level or higher

Nice to have:

• AWS certification (e.g., AWS Certified Developer)
• Node.js -related certifications
• Experience with VoIP / telecom systems (SIP, signaling, voice infrastructure)

Additional Information

We offer

• Culture of relentless performance: join an unstoppable technology development team with a 99% project success rate and more than 30% year-over-year revenue growth.
• Competitive pay and benefits: enjoy a comprehensive compensation and benefits package, including health insurance, language courses, and a relocation program.
• ForeverRemote work culture: make the most of the flexibility that comes with remote work.
• Growth mindset: reap the benefits of a range of professional development opportunities, including certification programs, mentorship and talent investment programs, internal mobility, and internship opportunities.
• Global impact: collaborate on impactful projects for top global clients and shape the future of industries.
• Welcoming multicultural environment: be a part of a dynamic, global team and thrive in an inclusive and supportive work environment with open communication and regular team-building company social events.
• Social sustainability values: join our sustainable business practices focused on five pillars, including IT education, community empowerment, fair operating practices, environmental sustainability, and gender equality.

* Miratech is an equal opportunity employer and does not discriminate against any employee or applicant for employment on the basis of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity, or any other protected status under applicable law.