Top Tech Jobs & Startup Jobs in Bucharest

Architect and build core Decision Intelligence platform capabilities: heterogeneous data integration, semantic modeling, simulation and optimization services, scalable distributed backend systems, AI/ML and LLM-powered production deployments, data pipelines, and operational tooling. Provide technical leadership, own full lifecycle from design to production, improve reliability, observability, and drive engineering excellence.

Lead global marketing strategy and commercial execution for Reverse Osmosis across industrial, municipal, desalination, and drinking water markets. Drive portfolio roadmap, innovation, channel architecture, go-to-market models, and cross-functional alignment. Manage global marketing teams, monitor commercial KPIs, and optimize pricing, margin, and pipeline to deliver sustainable growth.

Design, build, and improve ML models and production pipelines; collaborate with engineers, data scientists, and PMs; develop experimentation roadmaps; set up reproducible environments; monitor and maintain production models; document models and processes; propose and apply new AI/ML solutions.

Support lead generation and prospect research across European markets; generate outbound opportunities via email, LinkedIn, and calls; assist conference and account management activities; manage CRM, reporting and proposals; progress self-generated deals with coaching; learn enterprise and transactional sales approaches while sharing market feedback to improve product and commercial strategy.

Design, implement, and maintain stable, highly available infrastructure. Build and support CI/CD pipelines, deploy enterprise projects on AWS, automate build/release and monitoring, troubleshoot performance, participate in on-call rotation, and ensure security and compliance while collaborating across teams.

Perform inbound and outbound prospecting to identify and qualify sales opportunities for Account Executives. Research target accounts and contacts, respond to leads, document activities in Salesforce, collaborate with sales and marketing to accelerate enterprise deals, recommend process improvements, and represent the Jumio brand professionally.

Own and deliver end-to-end features for high-scale Ruby on Rails systems. Design and implement AI/LLM-assisted workflows, work with LLM APIs and retrieval strategies, ensure performance, reliability, security, and maintain automated unit, integration, and E2E tests, and debug production issues.

Develop and optimize algorithms for battery and renewable energy projects, analyze market data trends, and ensure algorithm performance.

Design and build backend services for a multi-tenant cashier system, integrating with blockchain networks and ensuring scalability and security in a financial context.

The role involves optimizing mobile telecommunications networks using proprietary tools and conducting KPI analysis, troubleshooting, and customer collaboration to enhance network performance and efficiency.