Top Software Engineer Jobs in Romania

Design and evolve core control, data, and observability systems; implement resilient region-spanning architectures; build libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, and testing; and shape platform capabilities across identity, scheduling, observability, and distributed state management.

The role involves designing and evolving core systems at LiveKit, implementing resilient architectures, and building tools to enhance system reliability and developer speed. Strong distributed systems experience and programming skills are essential.

Design, implement, and operate low-latency, highly available distributed control, data, and observability systems. Build region-spanning architectures, libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, testing, and real traffic; and shape platform capabilities around identity, scheduling, observability, and distributed state management.

Develop and maintain embedded C++ software, optimize Ethernet communication stacks, manage network communication, and collaborate with teams for debugging and development.

The Senior Software Engineer will design, build, and optimize backend services and Kubernetes operators on multi-cloud platforms, focusing on infrastructure solutions and automation.

Design, develop, and maintain C++ modules and Mobile Core components for marine navigation and sonar products. Own features, debug complex issues, collaborate across teams, and meet project deadlines while working onsite in Cluj-Napoca.

Develop and maintain key components of a financial exchange platform, coach team members, and ensure design meets security needs.

The Software Developer at OneOcean will develop, maintain, and enhance maritime software, focusing on high-performance applications and collaboration with cross-functional teams.

As a Senior Software Engineer, you will develop and manage a MongoDB solution on various platforms, ensuring reliability and security while contributing to a small team focused on impactful projects.

The Software Stack/Framework Engineer will develop software for quantum computing, maintain tools and APIs, and collaborate across teams to design hybrid workflows.

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.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Lead design and ownership of shared libraries, Spring Boot starters, and agentic frameworks. Set standards for agent orchestration, evaluations, and guardrails. Mentor teams on Python-based agents (LangChain/LangGraph), drive adoption, prototype research directions, and improve developer experience across Kotlin backend and client libraries.

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.

Develop and architect Java-based cybersecurity platform features for business-critical SAP and Oracle applications. Collaborate with leadership, product management, cybersecurity researchers, architecture, security, and IT teams to define and deliver scalable, reliable cloud-native systems. Build APIs and asynchronous services, improve quality engineering and CI/CD practices, troubleshoot production environments, and help mature platform architecture while following secure software development practices.

Lead architectural and code-level performance engineering for Elasticsearch, from design through production. Develop performance models, profile distributed systems, identify bottlenecks, optimize logging, metrics, vector search, and ES|QL, and build benchmarks and regression detection for stateful and serverless architectures. Drive AI-assisted optimization automation, collaborate across teams, and mentor engineers. The role emphasizes Java and JVM internals, concurrency, thread-safe and lock-free programming, distributed systems, and large-scale data-store performance.

Designs and maintains embedded software development, testing, manufacturing, and deployment tools. Responsibilities include board bring-up, flashing, provisioning, diagnostics, hardware-in-the-loop testing, factory automation, simulation, observability, and cross-platform toolchain integration across embedded hardware. Collaborates with firmware, hardware, systems, test, and manufacturing teams to improve productivity, reliability, test coverage, and production workflows.

Develop and maintain transactional data integration pipelines (connecting SAP to Zalando systems), build RESTful APIs and event-driven integrations, monitor production pipelines, troubleshoot and improve performance, support day-to-day operations, and collaborate with cross-functional teams to resolve integration challenges.

Lead development and maintain complex SAP BRIM applications within S/4HANA. Deliver backend and full-stack work using ABAP (RAP), SAP CAP/Node.js and BTP extensions, ensure clean-core side-by-side extensions, mentor junior engineers, and evaluate automation and AI integration opportunities.

Design, build and maintain transactional data integration solutions connecting SAP to Zalando systems. Develop RESTful APIs and event-driven integrations, optimize batch and streaming performance, ensure production reliability, and mentor engineers through code review and knowledge sharing.

Build core components of a diagnostic and personalization platform: backend data pipelines, frontends, services for genomic data ingestion, ML model integration, APIs, and cloud infrastructure. Collaborate with product and ML teams, iterate on prototypes and MVPs, and make architectural decisions supporting scalability and reliability.

Design and build the on-prem software stack for ModelVault appliances: containerized inference engines, model integration (LLMs/vision), deployment tooling, CLIs/GUI/APIs, OS and GPU setup, remote updates, telemetry, and collaborate with customers and founding team to iterate and scale the engineering org.

As a Senior Software Engineer, you will develop and enhance the Cresta platform, optimize design, collaborate with teams, and ensure high-quality deliverables.

Design and implement macOS endpoint security systems, ensuring performance and reliability while processing data securely and communicating with backends.

Senior full-stack product engineer owning features end-to-end: research customer problems, write product specs and wireframes, design and implement frontend and backend solutions, collaborate with product, design and infra, and ship high-quality, scalable features for tens of thousands of users.