Top Software Engineer Jobs in Bucharest

As an Ubuntu Core Software Engineer, you will design and implement features for the embedded Linux operating system, maintain boot mechanisms, debug system-level issues, and collaborate with a global team.

Full-stack Developers at QuantCo build user interfaces for machine learning solutions, collaborating with data scientists and engineers to deliver actionable products.

The Software Engineer will develop backend systems using Rust, manage multimodal data, and improve data infrastructure with a focus on performance and design ownership.

Develop and maintain backend services and RESTful microservices using Java and Spring Boot. Contribute to frontend tasks, automated testing, DevOps practices, troubleshooting, documentation, and mentor junior teammates within an Agile, cross-functional team delivering scalable payment platform features.

The Software Engineer will develop the Web SDK, improve performance, and enhance developer experience using AI tools. Responsibilities include shipping features, solving customer problems, and maintaining high engineering standards.

The role involves optimizing hardware support within a software stack for AI model deployment, collaborating with teams and hardware vendors to enhance performance and portability across platforms.

Canonical seeks open-source enthusiasts to optimize Ubuntu for new silicon technologies, collaborating with teams and customers to enhance software quality and performance across various platforms.

Build and ship full‑stack features for North, an enterprise AI workspace. Develop secure autonomous agents, execution engines, integrations, observability and evaluation systems. Collaborate with researchers to productionize models and deliver performant, low‑resource deployment code while adhering to strict security and privacy constraints.

As a Senior Java Software Engineer, you will design and deliver scalable, high-quality software solutions for energy management systems, collaborating with global teams and employing best practices in coding and Agile methodologies.

The Senior Java Software Engineer will develop and maintain software solutions for energy management, coordinate with global teams, and ensure code quality through best practices.

Design, build, and operate backend services for an AI-driven financial assistant. Own full SDLC, ensure performance, scale, resilience, and collaborate in small autonomous teams.

Responsible for building scalable distributed systems, mentoring teammates, innovating on technical solutions, and improving team processes. Requires expertise in backend languages, especially Golang and Typescript.

Evaluate AI-generated coding interactions, assess quality of engineering judgments, provide feedback, and define standards for AI coding agents. Comfortable making subjective judgments about engineering quality.

This role involves developing scalable back-ends and microservices, creating optimal architecture, and collaborating with teams to build resilient APIs and systems while ensuring performance and stability.

The Lead Golang Software Engineer develops server solutions, leads technical designs and code reviews, mentors colleagues, and ensures the quality of engineering practices in the Commercial Systems unit.

The Python Software Engineer will develop and maintain test automation tools for hardware certification and improve Linux testing methods.

You will build and maintain container images, automate CI/CD processes, engage with the community, and mentor junior team members in a collaborative environment.

Drive process improvement, coach colleagues, and manage features in a distributed system for cloud automation and software operations.

Lead Python Software Engineer responsible for developing solutions, collaborating on designs, mentoring team members, and enhancing engineering practices.

Develop and enhance dqlite, a distributed SQLite database, including debugging, implementing features, and engaging with the open source community.

We are seeking a hands-on Senior Java Software Engineer to design, implement, and maintain high-quality software solutions for energy management, focusing on Java and Spring Boot technologies.

Build and ship end-to-end features and agentic automations for North, Cohere's AI workspace for finance. Integrate financial data sources, enforce data isolation and RBAC, collaborate with Product/UX/ML/Sales, work with finance customers, ensure reliability/security/auditability, and iterate on platform capabilities using AI where appropriate.

The role involves designing and implementing features, debugging, maintaining documentation, and collaborating with the community in the Mir graphics stack.

Design, build, and maintain scalable backend systems with a focus on the CMS. Develop APIs and microservices, ensure performance and reliability, drive technical standards, support CI/CD and deployments, lead technical discussions, and collaborate with product and engineering teams to deliver robust backend solutions.

Lead technical direction for the Data Fabric domain: design scalable Angular/TypeScript solutions, mentor engineers, reduce technical debt, work across frontend and backend, and drive resilient, performant data pipelines and cloud-native architectures in AWS.