Sofia, Sofia-City, Bulgaria · Remote OK
About Workato Workato delivers enterprise infrastructure for the agentic era, redefining iPaaS and helping enterprises unify data, applications, processes, and AI into a single, governed platform. A leader in Enterprise …
Skills: Python, Machine Learning, LLM, NLP, Software Engineering
Sofia, Sofia-City, Bulgaria · Hybrid
SumUp builds simple, affordable financial tools that help over 4 million small businesses across 37 markets get paid, manage their money, and grow. Beyond card payments, we offer a full suite of financial products - busi…
Skills: Kotlin, Java, Go, Elixir, AWS
Sofia, Sofia-City, Bulgaria · Hybrid
This is us At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise sol…
Skills: Java, Spring Boot, Microservices, Monolithic architecture, Kafka
Sofia, Sofia-City, Bulgaria · Remote OK
Company Description About Sutherland Artificial Intelligence. Automation. Cloud engineering. Advanced analytics. For business leaders, these are key factors of success. For us, they’re our core expertise. We work with ic…
Skills: Network Engineering, LAN, WAN, WLAN, SD-WAN
Sofia, Sofia-City, Bulgaria · On-site
Amusnet is a leading provider recognized for offering the best-performing products and innovative solutions in gaming globally. With a portfolio of 300+ casino games, our company collaborates with 800+ operators on 2000+…
Skills: C++14, C++ STL, Object-oriented Design, Design Patterns, Data Structures
Sofia, Sofia-City, Bulgaria · Hybrid
About us: PLAN A is a software development company delivering tailored enterprise software solutions, nearshore Agile teams, and digital transformation projects across Europe. We combine technical excellence with busines…
Skills: Python, Machine learning, NLP, PyTorch, TensorFlow
Sofia, Sofia-City, Bulgaria · Hybrid
Аbout GlobalFoundries GlobalFoundries is a world-leading contract manufacturer for the global semiconductor industry with facilities in Dresden, Singapore, New York and Vermont (USA). Our products are used in various tec…
Skills: Reliability analysis, Semiconductor theory, Electrical engineering, Materials science, Physics
Sofia, Sofia-City, Bulgaria · Hybrid
Position Overview 74Software is growing continuously and modernizing its data landscape to support a new go-to-market strategy and a new generation of products. We are seeking a versatile engineer to join the Information…
Skills: SQL, Python, Data engineering, ETL, ELT
Sofia, Sofia-City, Bulgaria · On-site
Join Our AI-Powered Cloud Engineering Team At Mainstream, we're building the next generation of cloud operations by combining deep cloud expertise with AI-powered automation and intelligent operations. We're looking for …
Skills: Cloud infrastructure, Linux administration, Infrastructure as Code, Terraform, Ansible
Sofia, Sofia-City, Bulgaria · On-site
Join Our AI-Powered Cloud Engineering Team At Mainstream, we're building the next generation of cloud operations by combining deep cloud expertise with AI-powered automation and intelligent operations. We're looking for …
Skills: Linux administration, Cloud infrastructure, Terraform, Ansible, Docker
Sofia, Sofia-City, Bulgaria · Hybrid
Overview 74Software is growing continuously and modernizing its data landscape to support a new go-to-market strategy and a new generation of products. We are seeking a versatile engineer to join the Information Systems …
Skills: SQL, Python, dbt, Airflow, Snowflake
Sofia, Sofia-City, Bulgaria · On-site
Festo is a worldwide leader in automation technology headquartered in Germany. We are always coming up with creative process solutions that bring product ideas to life. As an employer, we do everything in our power to en…
Skills: Production scheduling, Material flow management, Production order management, Capacity planning, Inventory management
Sofia, Sofia-City, Bulgaria · Remote OK
Please Note: This is a proactive pipeline hiring initiative. While the start date isn't tomorrow, pre-vetting now ensures you get priority visibility with our key clients and allows us to move at lightning speed the mome…
Skills: Shopify Plus, E-commerce, Software architecture, Code analysis, System design
Sofia, Sofia-City, Bulgaria · Hybrid
We help the world run better At SAP, we keep it simple: you bring your best to us, and we'll bring out the best in you. We're builders touching over 20 industries and 80% of global commerce, and we need your unique talen…
Skills: Golang, Kubernetes, Cloud-native infrastructure, Linux, Container security
Sofia, Sofia-City, Bulgaria · Remote OK
LivePerson (NASDAQ: LPSN) is the global leader in enterprise conversations. Hundreds of the world’s leading brands — including HSBC, Chipotle, and Virgin Media — use our award-winning Conversational Cloud platform to con…
Skills: GCP, GKE, Terraform, Kubernetes, FluxCD
Sofia, Sofia-City, Bulgaria · Hybrid
Yotpo is leading the next era of trust and loyalty in eCommerce. With AI-powered Reviews and Loyalty solutions, we help brands turn browsers into customers and customers into advocates. Through deep integrations across t…
Skills: Java, Spring Boot, Microservices, Event-driven architecture, System design
Sofia, Sofia-City, Bulgaria · On-site
Company Description We’re Red Tiger, a dynamic and self-contained team within the vast Evolution ecosystem, thriving with 200 talented professionals based in Sofia. Our expertise spans from product inception to final dev…
Skills: Automation testing, Node.js, Git, JSON, Analytical thinking
Sofia, Sofia-City, Bulgaria · On-site
Company Description We’re Red Tiger, a dynamic and self-contained team within the vast Evolution ecosystem, thriving with 200 talented professionals based in Sofia. Our expertise spans from product inception to final dev…
Skills: Automation Testing, Node.js, Git, JSON, QA Principles
Sofia, Sofia-City, Bulgaria · On-site
Company Description Evolution is a leading provider of premium gaming solutions to the world´s most successful online casino operators.Our innovative and high-quality offer includes brands like Red Tiger, Evolution Live,…
Skills: 2D Animation, Adobe Animate, Spine 2D, After Effects, Animation Principles
Sofia, Sofia-City, Bulgaria · Remote OK
Company Description About Sutherland Artificial Intelligence. Automation. Cloud engineering. Advanced analytics. For business leaders, these are key factors of success. For us, they’re our core expertise. We work with ic…
Skills: Network Engineering, LAN, WAN, WLAN, SD-WAN
Sign up with Clera and we'll reach out the moment a role actually fits you — no more spraying applications into the void.
You will design, build, and deploy ML/LLM-powered services to enhance intelligent automation across the Workato platform. This involves collaborating with cross-functional teams to optimize model performance, conduct experiments, and ensure scalable AI system reliability.
Candidates must have a bachelor's or master's degree in a technical field and at least 3 years of experience in Machine Learning or Data Science. Strong Python programming skills and hands-on experience with NLP or LLM systems are required.
Workato delivers enterprise infrastructure for the agentic era, redefining iPaaS and helping enterprises unify data, applications, processes, and AI into a single, governed platform. A leader in Enterprise MCP and trusted by 50% of the Fortune 500, Workato’s cloud-native architecture connects every application, data source, and process to power real-time orchestration at scale. With enterprise-grade security and continuous innovation at its core, Workato provides the trusted foundation for organizations to automate with confidence and operationalize AI across the business. To learn more, visit www.workato.com
Ultimately, Workato believes in fostering a flexible, trust-oriented culture that empowers everyone to take full ownership of their roles. We are driven by innovation and looking for team players who want to actively build our company.
But, we also believe in balancing productivity with self-care. That’s why we offer all of our employees a vibrant and dynamic work environment along with a multitude of benefits they can enjoy inside and outside of their work lives.
If this sounds right up your alley, please submit an application. We look forward to getting to know you!
Also, feel free to check out why:
Business Insider named us an “enterprise startup to bet your career on”
Forbes’ Cloud 100 recognized us as one of the top 100 private cloud companies in the world
Deloitte Tech Fast 500 ranked us as the 17th fastest growing tech company in the Bay Area, and 96th in North America
Quartz ranked us the #1 best company for remote workers
We are looking for an exceptional Middle / Senior Machine Learning Engineer / Data Scientist to join our growing AI team. In this role, you will design, build, deploy, and improve ML/LLM-powered services and features that power intelligent automation and AI-driven product experiences across the Workato platform. You will work closely with our Engineering, Product, and Design teams to define and track product metrics and evaluation strategies, design customer-facing experiments and dive deep to provide actionable insights.This role is ideal for someone who combines strong ML/LLM intuition, software engineering skills and a practical mindset for shipping reliable, scalable AI systems.
In this role, you will also be responsible to:
Build and improve AI services using LLMs and custom machine learning models for production use cases.
Design, develop, and operate ML/LLM systems end-to-end, from prototyping to deployment and monitoring.
Write high-quality Python code that is testable, maintainable, and efficient.
Improve validation, observability, and performance monitoring for ML services (quality, latency, reliability, cost).
Partner cross-functionally with product managers, platform engineers, and other stakeholders to ship AI-powered product capabilities.
Evaluate and improve existing implementations by identifying bottlenecks, bugs, and opportunities for optimization.
Design controlled experiments to test the features for our AI-based products and perform deep analysis from the results to find actionable insights
Contribute to technical design and code reviews, helping raise engineering quality across the team.
Experiment and iterate on model behavior, prompting, retrieval, tool use, or orchestration strategies to improve user outcomes.
Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Statistics, or equivalent practical experience
3+ years of experience in Machine Learning Engineering, Data Science, or a similar role.
Strong Python programming skills.
Hands-on experience with NLP and/or LLM-based systems.
Strong understanding of software engineering fundamentals (testing, code quality, debugging, version control).
Ability to work collaboratively in a fast-moving environment and drive projects with ownership.
Experience with tool-use agents or workflow-aware AI systems.
Experience building AI products in enterprise SaaS environments.
Experience with A/B testing and statistical significance techniques.
Experience with LLMOps/MLOps tooling and practices (monitoring, evaluation pipelines, model rollout, CI/CD).
Experience working with modern data warehouses such as Amazon Redshift Snowflake.
The industry’s only Control and Execution Platform for Enterprise AI.
Workato is the leading Control and Execution Platform for Enterprise AI – the neutral platform enterprises trust to put AI to work across their business. We connect to every app, system, and process your business runs on, with no data migration, no rip-and-replace, so AI can reliably orchestrate business processes in production, at enterprise scale. Built on more than a decade of running mission-critical processes for over half the Fortune 500, including Nasdaq, Amazon, Cisco, Vodafone, Atlassian, and Lucid Motors, Workato turns 14,000+ enterprise systems into one governed execution layer. AI has solved reasoning. The next frontier is execution, with Workato.
Offices: 1530 Page Mill Road, Palo Alto, California 94304, US · 71 Ayer Rajah Crescent, #01-01, Singapore, 139951, SG · 110 Wall Street, #4-007, New York, NY 10005, US · Asean Dr, Level 6, Muntinlupa, National Capital Region 1781, PH · Wework Hibiya Fort Tower, 1-1-1 Nishishinbashi, Minato, Tokyo, Marunouchi Trust Tower - Main, Level 20,, Tokyo, 105-0003, JP
There are currently 574 open engineering positions in Sofia, Bulgaria listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Tieto, Hewlett Packard Enterprise, AgileEngine, Palo Alto Networks, Avenga, among others. Browse the listings above to see every active employer.
Yes — 372 of the 574 open engineering positions offer remote or hybrid work (112 remote, 260 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
