Senior AWS DevOps Engineer

Employment: Full-time Experience level: Mid-Senior Level Job Description Tieto Tech Consulting (MentorMate from 2001 to 2026) provides design-led, data-centric, and AI-powered digital engineering & consulting services to enterprises worldwide. With a strong heritage of Nordic quality, local presence, and global-scale operations, we are backed by 8,500+ IT professionals. Our clients trust us for advanced data and analytics skills, top industry-specific expertise, specialized software R&D, and the capabilities of a multinational team. We are part of Tieto, a leading technology company with an annual revenue of approximately EUR 2bn. Tieto Tech Consulting’s team in Bulgaria consists of 500+ professionals specializing in the development of tailored digital solutions in diverse industries.  We’re looking for a Senior AWS DevOps Engineer to join a global team of our clients, modernizing a cloud-native healthcare SaaS platform used for data-driven and AI-powered solutions. You’ll help shape the infrastructure that enables engineering and data science teams to move faster, deploy safely, and scale confidently.  This is a hands-on role for someone who enjoys building reliable systems, improving developer experience, automating everything possible, and working close to both platform and AI/ML teams.  Key Responsibilities  Hands-on work with modern AWS services (Fargate, EKS, Lambda, S3, RDS) and CI/CD tooling such as ArgoCD and GitHub Actions to support reliable, scalable, and production-grade systems  Lead operations for multi-tenant SaaS workloads on AWS, ensuring scalability, high availability, and cost efficiency  Build and maintain scalable infrastructure supporting production applications, data platforms, and AI/ML workloads  Improve operational excellence through incident response, postmortems, automation, and proactive monitoring   Manage and enhance CI/CD pipelines supporting both application and ML deployment workflows  Build and maintain infrastructure automation using Infrastructure as Code (AWS CDK or Terraform)  Enable self-service capabilities for engineering and data science teams  Monitor and optimize cloud usage across compute, GPU, and storage resources, implementing cost controls and forecasting  Support and automate ML pipelines, including training, testing, and deployment using AWS SageMaker, Kubeflow, or MLflow  Manage GPU and compute clusters (EKS, ECS, EC2) for model training and inference workloads  Develop and maintain monitoring, alerting, observability, and security best practices  Collaborate closely with Engineering, Data, AI/ML, and PlatformOps teams to ensure smooth cross-team delivery  Required Experience & Qualifications  6+ years of experience in DevOps/ CloudOps/ SRE  Strong hands-on experience with AWS services such as EKS, ECS/Fargate, EC2, Lambda, S3, RDS, IAM, CloudWatch, and CloudTrail   Very good understanding of Kubernetes and containerized workloads in production environments   Experience building CI/CD pipelines and automating infrastructure using Infrastructure as Code tools  Proficiency in scripting or automation using Python, Bash, or similar languages   Knowledge of cloud cost optimization, right-sizing strategies, and FinOps best practices   Experience with monitoring and observability platforms such as ELK, Grafana, Splunk and OpenTelemetry   Familiarity with MongoDB operations and performance tuning   Strong communication and collaboration skills in cross-functional environments Excellent written and spoken English  A significant advantage would be    Experience with multi-tenant SaaS architecture  Experience working in security- or compliance-focused environments  Exposure to GPU infrastructure and ML inference optimization  Additional Information At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity. Diversity, equity and inclusion | Sustainability | Tieto Stay alert to recruitment scams: • Tieto only communicates via  @tieto.com  email addresses. • We never ask candidates to pay fees or share financial details during recruitment. • If you receive a suspicious message claiming to be from Tieto, don't respond — verify it via our official careers site. • For more information visit  Important Advisory Regarding Recruitment Fraud | Tieto Blog