Top Software Engineer Jobs in Bucharest

Design, develop, test, and maintain reliable Java backend services supporting institutional trading applications. Own technical topics end to end, contribute to architecture and integrations, troubleshoot production issues, manage databases and transactional behavior, and improve scalability, resilience, observability, and delivery practices. Collaborate across teams, review code, support production systems, and mentor less experienced engineers.

Develop and maintain Python backend services and pipelines that process device data, identify software vulnerabilities, and deliver reliable remediations. Responsibilities include integrating vulnerability data sources, operating scalable production systems, monitoring deployments, responding to incidents, investigating false positives and negatives, troubleshooting customer-reported issues, and collaborating across Support, Product, and Engineering. The role requires strong debugging, analytical, distributed-systems, database, containerization, and AI-assisted engineering skills.

Develop and maintain large-scale Java software systems for global energy markets. Responsibilities include estimating work, participating in Agile development and technical design, building modular interfaces and web services, writing scalable and testable code, maintaining quality automation, and collaborating with product leaders and global teams. The role requires strong Java, Spring, web services, databases, Git, DevOps, software design, and data structures expertise, with messaging systems, microservices, AI-assisted development, and frontend technologies as preferred skills.

Develop and maintain scalable Java software for global energy-management products. Responsibilities include estimating work, contributing to Agile development and technical design, building interfaces between modules, writing tested and maintainable code, making technology decisions, and collaborating with product leaders and global teams. The role requires expertise in Java, Spring, web services, databases, software design patterns, source control, DevOps, and modern software development practices.

Build and ship production software across Stripe’s technology stack, collaborating with engineers and stakeholders on technical design, code reviews, and impactful projects. Interns will work on systems supporting payments, fraud prevention, payouts, checkout, and other financial infrastructure. Responsibilities include learning unfamiliar systems, communicating progress, incorporating feedback, and using AI tools responsibly to accelerate development while validating outputs.

Build and deploy software supporting Stripe’s financial infrastructure and APIs. Solve complex, ambiguous technical problems, learn unfamiliar systems, collaborate on coding projects, communicate clearly with stakeholders, and use AI tools responsibly to accelerate development. New graduates will develop specialized technical knowledge while contributing to production systems and projects that serve millions of businesses.

Develop and maintain C++ embedded software components for automotive telematics systems using Linux, 5G, and V2X technologies. Responsibilities include interpreting specifications, designing components, coding, debugging with GDB, unit and system testing, code reviews, root-cause analysis, issue resolution, performance improvement, and collaboration with internal teams and customers. Occasional international travel is required for training and coordination.

Develop and architect system management firmware for NXP i.MX SoCs and development boards. Responsibilities include porting firmware, integrating with system ROM, U-Boot, ARM Trusted Firmware, Linux, and MCU SDK components, developing tests, measuring performance, documenting solutions, and debugging customer systems. The role requires embedded C development, Linux tooling, ARM Cortex-M/A experience, and ARM assembly knowledge.

Develop and maintain scalable cloud ecosystems using Golang and Python, enhancing backend microservices and collaborating within a fast-paced team.

Develop, implement, test, document, and maintain scalable software solutions for a flexible benefits web platform. Translate product requirements into maintainable code, contribute to architecture, collaborate within agile teams, support QA and incident resolution, and improve engineering practices, performance, and security. The role may involve full-stack development with Angular or React, or backend development using C# and .NET.

Design and implement backend systems, ETL pipelines, data storage, and APIs for a SaaS platform. Maintain platform availability and improve security, quality, testing, automation, documentation, and features. Support customers and staff, contribute to sprint planning and prioritization, estimate development effort, track project progress, and proactively resolve roadblocks.

Build and maintain client-facing software components within a monolith and microservices architecture. Responsibilities include scaling systems for global demand, meeting regional regulatory requirements, and launching validated features. The role requires Java development, REST API delivery, database performance tuning, Snowflake, AWS, automated testing, code reviews, service ownership, continuous releases, on-call support, client interaction, and mentoring junior developers.

Build and maintain high-quality React Native mobile applications for Krak. Own feature delivery from technical design through release and iteration, create performant and maintainable UI components, write tested code, participate in reviews and design discussions, and collaborate with product, design, frontend, and Rust backend engineers. Contribute to shared components, tooling, code quality, and reliable consumer financial experiences.

Build and maintain Ergodic AI’s AI platform across back-end and front-end systems. The role involves developing with Python web frameworks and JavaScript/TypeScript, integrating with client technology stacks and workflows, applying AI, ML, and LLM concepts, and contributing to DevOps, cloud deployment, testing, and infrastructure practices. As an early-stage hire, the engineer will help shape the product and solve complex data and AI challenges.

As an EBICS Engineer, you'll ensure the availability and reliability of EBICS applications, develop secure electronic banking channels, lead upgrades, and collaborate with teams to meet technical specifications using various technologies.

Build and improve Criteo’s App product across backend services, APIs, tracking, attribution, data pipelines, testing, configuration, and observability. Investigate production performance and reliability issues using logs, metrics, and data; identify root causes; recommend solutions; and deliver measurable improvements. Collaborate with Product, Analytics, Operations, Technical Services, and R&D while owning technical topics through implementation, code reviews, and continuous delivery.

Develop onboard and ground-control software for autonomous robotic systems. Responsibilities include telemetry, operator interfaces, embedded systems, communication protocols, real-time data and video streaming, GUI development, performance optimization, testing, CI/CD, and debugging distributed robotics systems.

The role involves programming embedded systems, learning Linux internals and debugging skills, and gaining experience with ARM architecture and device drivers.

Develop and maintain low-latency data platform components and feed handlers using Java; implement automated testing and monitoring; collaborate with Product Owner and cross-border teams; learn KDB/q and financial markets concepts.

Productionize AI-built GTM software prototypes into secure, reliable customer-facing applications. Own hosting, environments, CI/CD, secrets, backups, releases, code quality, monitoring, security, staged rollouts, and integrations across CRM, ERP, and internal data systems. Build context infrastructure for GTM and customer-facing agents, reconcile data across systems, collaborate with product and commercial teams, and contribute to Wingtra’s AI engineering practice.

Develop and modernize a scalable cloud platform using Python, React, and AWS. Own architecture, technical designs, production deployments, technical-debt remediation, security remediation, testing, documentation, and code reviews. Build reliable AI and agentic workflows with LLMs, responsive frontend features, and distributed backend services. Collaborate with Product and Engineering leadership, manage Docker and Kubernetes deployments, track project status, and use GitHub Copilot and spec-driven development in an AI-assisted workflow.

Design, build and deploy cloud-native SAP CAP applications on SAP BTP. Implement CDS data models and OData services, develop Node.js backend logic, integrate security and connectivity, deploy via Cloud Foundry/Kyma with CI/CD, and craft UIs with CDS annotations/SAPUI5 and Fiori Elements.

Design, implement and maintain modern SAP cloud integrations using SAP Integration Suite (iFlows, API Management, Event Mesh). Build secure, event-driven and B2B/EDI connections, handle transformations (XSLT, Groovy, Message Mapping), manage adapters/protocols, ensure error handling and security, and collaborate with stakeholders while mentoring teammates.

Build and architect high-performance advisory brokerage services for block trading, portfolio management, and IRA products. Develop frontend and backend systems, databases, and distributed architectures with strong concurrency, scalability, availability, and low-latency performance. Design order management and financial transaction systems while contributing across the technology stack in an early-stage environment.

Build and ship backend services for Primer’s payment orchestration platform, handling routing, fallback logic, tokenization, authentication, and workflows at scale. Deliver features from specification through production, participate in architecture and code reviews, monitor system health, troubleshoot production issues, and collaborate on reliable, maintainable engineering solutions in a remote-first team.