Top Software Engineer Jobs in Bucharest

Develop and own C/C++ software for data center switching platforms, including architecture, implementation, testing, debugging, documentation, and customer support. Work closely with hardware and networking teams on forwarding ASICs, FPGAs, embedded systems, drivers, and performance-critical datapath features. Participate throughout the software development lifecycle, from requirements gathering through production delivery.

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.

Lead development and maintenance of front-end libraries, SDKs, and the design system. Provide technical vision, consult and evangelize front-end best practices, collaborate with designers and engineers, drive adoption of the stack, and optimize web application performance and scalability.

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.

Develop and architect features for Malwarebytes Browser Guard, serving millions of users. Write high-quality, tested code; design integrations; collaborate with Product, UX, and QA; review code; mentor engineers; and support delivery of the product roadmap. The role emphasizes React, JavaScript/TypeScript, Go, debugging, system architecture, AI workflows, user-centric design, and strong communication.

Own the technical strategy and architecture for the Voyager SDK application layer. Lead model deployment, pipeline development, preprocessing and decoding, framework integrations, metadata standards, performance profiling, and optimization across heterogeneous AI hardware. Resolve complex compilation and latency issues, build reusable libraries and tools, influence technical roadmaps, represent the team with stakeholders and customers, mentor engineers, and establish development best practices.

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.

Design, develop, and maintain high-quality web applications using CodeIgniter and PHP. Collaborate with cross-functional teams to define and ship features, ensure application performance and quality, identify and fix bugs, and maintain code quality and automation.

Design, build, and improve distributed clearing and securities-finance systems supporting brokerage products. Own projects from ideation through deployment, develop reliable APIs and integrations, refine existing infrastructure, and participate in on-call operations. The role requires strong systems fundamentals, attention to detail, financial-markets interest, and ownership of production systems handling customers’ money.

Own end-to-end development of Kimchi Studio features, a desktop application for collaborative autonomous coding agents. Design, implement, test, and roll out product capabilities using TypeScript, Electron, React, Node.js, and Go. Diagnose performance issues with query profiles and flame graphs, prioritize UX polish and speed, and collaborate directly with product and engineering teams in a remote-first environment.

Design, build, and scale Java backend services supporting global payments infrastructure. Own features from architecture through deployment, develop distributed systems and APIs, improve performance and reliability, participate in on-call support, and mentor engineers. Collaborate in an agile environment while contributing to technical strategy, system design, testing, observability, and continuous engineering improvements.

Lead quality strategy and testing for complex 3D/CAD/CAM manufacturing software. Responsibilities include defining test plans and quality gates, developing Python automation, conducting functional, integration, performance, and hardware-software validation testing, investigating defects, improving CI/CD quality practices, and mentoring QA engineers. The role collaborates across engineering and product teams to ensure reliable geometry-intensive applications throughout the software development lifecycle.

Build and scale Base360.ai’s short-term rental platform, including customer-facing applications, APIs, automation engines, AI-powered workflows, third-party integrations, and cloud infrastructure. Develop systems for reservations, pricing, payments, guest communication, property operations, reporting, and financial workflows. Own projects end to end, make architectural decisions, ensure reliability, and deliver scalable products in a remote-first startup environment.

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.

Staff Software Engineer responsible for architecting and developing scalable web applications and APIs using Elixir, React, and PostgreSQL. The role involves solving ambiguous technical and business problems, ensuring system reliability and performance, collaborating cross-functionally, presenting solutions to leadership, writing tested code, participating in code reviews, mentoring engineers, and removing technical roadblocks.

Develop a highly optimized, open-source inference framework for AI networking acceleration on supercomputers and data centers. Build low-level infrastructure using hardware offloads, GPU kernels, RDMA networking, and performance optimization techniques. The role requires modern C++/C/Rust development, Linux expertise, TCP/IP knowledge, and understanding of computer architecture and operating systems, with CUDA, ML, LLM, parallel programming, HPC, and RDMA experience preferred.

Develop and maintain React Native and TypeScript mobile experiences across multiple Kraken products. Own initiatives from requirements through release and iteration, build support features such as messaging, chat, content, and voice capabilities, and collaborate with Product, Design, web, mobile, and backend teams. Write tested code, participate in technical design and reviews, improve shared architecture, and contribute to real-time functionality using APIs and WebSockets.

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.

Senior Software Engineer to design and implement C++/Python software, accelerate workloads with CUDA, develop and maintain Linux kernel modules and system services, optimize system and GPU performance, manage Linux systems, mentor junior engineers, and integrate AI technologies across products.

Lead the technical vision and development of Elasticsearch’s core search infrastructure, including indexing, retrieval, query execution, and relevance. Research search algorithms and data structures, contribute to Lucene, guide technical roadmaps, mentor engineers, collaborate across teams, and build high-performance distributed systems.

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