Senior Level Full Stack Engineer

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.

We are looking for a Senior Full Stack Engineer to provide hands-on technical leadership across CX and contact center solutions. You will shape scalable solutions using Java, Spring Boot, React, TypeScript, API-first design, event-driven architecture, and cloud-native practices while remaining directly involved in critical engineering work. The role includes designing, developing voice infrastructure, digital-channel and messaging applications, and intelligent routing capabilities using technologies such as FreeSWITCH, Kamailio, and Twilio or comparable communications platforms. It suits a senior engineer who can move confidently between architecture, code, delivery risk, non-functional requirements, and client-facing technical discussions.

Responsibilities:

• Lead solution architecture and detailed technical design for scalable, secure, and highly available CX and contact center capabilities.
• Design and develop critical Java and Spring Boot services, APIs, integration components, and reference implementations.
• Guide frontend architecture for agent, supervisor, and administration experiences using React and TypeScript.
• Define API-first and event-driven strategies, including domain boundaries, contracts, event schemas, versioning, resilience, and data ownership.
• Design integrations across voice infrastructure, digital channels, messaging applications, routing engines, contact center platforms, CRM, WFM, identity, knowledge, recording, analytics, and enterprise applications.
• Design and evolve carrier-grade voice and communications capabilities using FreeSWITCH, Kamailio, SIP, WebRTC, and Twilio or comparable CPaaS platforms.
• Translate business journeys and operational requirements into solution components, interaction flows, deployment views, and technical roadmaps.
• Define non-functional requirements for availability, performance, concurrency, security, privacy, observability, disaster recovery, and supportability.
• Review designs and code, identify technical risks, challenge assumptions, and drive pragmatic decisions that balance quality, time, and cost.
• Establish engineering standards, reusable patterns, quality gates, documentation expectations, and technology adoption guidance.
• Lead technical discovery, proof-of-concept work, platform assessments, modernization planning, and production-readiness reviews.
• Collaborate with client stakeholders, Product, Architecture, QA, DevOps, Security, Operations, and vendors to govern delivery and resolve critical technical issues.

Qualifications:

• 8+ years of software engineering experience, including substantial ownership of architecture and technical delivery for distributed applications.
• Expert-level hands-on experience with Java, Spring Boot, microservices, REST APIs, persistence, security, testing, and performance engineering.
• Strong expertise in Angular or React and TypeScript, with the ability to guide frontend architecture and engineering practices.
• Practical familiarity with Node.js for services, integrations, tooling, or server-side frontend patterns.
• Strong knowledge of voice infrastructure and real-time communications, including SIP, RTP, WebRTC, FreeSWITCH, Kamailio, session control, media handling, and telephony troubleshooting.
• Deep understanding of API-first design, event-driven architecture, messaging, distributed systems, and cloud-native engineering.
• Experience with PostgreSQL or comparable relational databases, data modeling, integration data flows, and transactional design.
• Hands-on experience with contact center or Customer Experience platforms and the operational concepts behind customer routing and engagement.
• Excellent English communication skills, including the ability to produce clear technical documentation and lead client-facing workshops.

Nice to have:

• Experience designing digital-channel and messaging applications across SMS, chat, WhatsApp, social messaging, email, or comparable channels.
• Experience designing routing engines for voice and digital interactions, including skills, priorities, queues, capacity, overflow, and fallback logic.
• Experience with Genesys, NICE, Five9, Amazon Connect, Cisco, Avaya, or comparable contact center platforms.
• Exposure to WFM processes and integrations involving forecasting, schedules, adherence, and employee data.
• Familiarity with Kafka or RabbitMQ, Kubernetes, Jenkins, observability platforms, API gateways, and security architecture.

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.
• 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.