Remote Backend Engineer Jobs in Bulgaria (42)

Backend Developer - G2i Talent Pool

Join the G2i talent pool to be matched with projects involving AI labs and fast-growing companies. Work on diverse tasks ranging from model evaluations and RL environments to training data preparation.

🇩🇪 Senior Backend-Developer – Agents (100% Remote / German-Speaking)

You will be responsible for developing and maintaining autonomous AI agents for property management, including inbox, voice, and knowledge base agents. You will work independently to design, ship, and iterate on features while directly engaging with customers to solve problems.

Senior Backend-Developer – Agents (100% Remote)

You will develop and maintain autonomous agents for property management tasks, including inbox management, voice-based interactions, and knowledge base integration. Additionally, you will optimize LLM infrastructure, manage context, and improve retrieval-augmented generation processes.

Expert Back End Engineer

You will take ownership of the entire software development lifecycle, from architecture and implementation to deployment and production support. Additionally, you will collaborate with cross-functional teams and mentor fellow engineers to drive technical strategy and platform evolution.

Senior Backend Engineer with DevOps experience

Design, develop, and maintain scalable backend services and microservice-based applications for a modern enterprise platform. Collaborate with engineering teams to implement CI/CD processes, ensure code quality, and improve operational reliability through DevOps practices.

Lead Backend Engineer

You will architect, develop, and maintain scalable backend systems and APIs to support high-impact, real-time applications. Additionally, you will lead technical strategy, mentor engineering talent, and ensure high standards of code quality and system reliability.

BACKEND ENGINEER

The candidate will design, develop, and maintain robust server-side applications and APIs to power digital platforms. They will also collaborate with cross-functional teams to integrate third-party systems while ensuring performance, security, and scalability.

Back-End Developers

The developer will design, develop, and maintain scalable backend applications and RESTful APIs while ensuring system security and performance. They will collaborate with cross-functional teams to integrate services, troubleshoot production issues, and contribute to technical documentation and architecture.

Senior Backend Engineer (Go)

Design and develop scalable backend services and APIs in Go to support the PMM observability platform. Collaborate on building features for database management, monitoring, and troubleshooting while contributing to open-source projects.

Senior Backend Engineer

You will design, build, and maintain backend systems across a portfolio of products, taking ownership of problems from initial concept to production. You will collaborate with cross-functional teams to resolve technical incidents, optimize system performance, and make architectural trade-offs.

Backend Software Engineering & AI Instructor

The instructor will create and maintain backend software engineering and AI course content while leading live online sessions for cohorts. They are responsible for developing hands-on projects, mentoring students, and providing constructive technical feedback.

Go Backend Developer

Build and maintain Go backend services, GraphQL APIs, relational data models, and SQL queries supporting collections, marketplace transactions, and Instapacks. Write tests, debug production issues, improve reliability and performance, and collaborate with product and engineering teammates to ship features.

Senior Ruby/Rails Back-End Developer

Senior Backend Engineer, Payments

You will own the connector and adapter layer for payment methods, ensuring reliable transaction status handling and observability. Additionally, you will define the technical requirements for the orchestration platform and migrate payment flows to server-to-server integrations.

Backend Engineer

You will build and maintain Python-based data pipelines to integrate third-party marketing APIs into the company's ELT platform. This involves managing API authentication, rate limits, and data normalization to ensure reliable data delivery at scale.

Backend Engineer - Fully Remote in Europe

Build and operate scalable backend systems that serve AI-powered features in production. Design high-performance inference pipelines and orchestration workflows while ensuring system health and observability.

Sr. Backend Engineer (Remote)

You will take ownership of production backend systems, architecting scalable services and integrating new products within the Mode ecosystem. This role involves collaborating with cross-functional teams to deliver features while ensuring system reliability, performance, and security.

Backend Engineer - Solana

Design, build, and maintain Solana programs and backend services that power DeFi products. Own features end-to-end, including technical design, implementation, testing, deployment, and ongoing monitoring.

Backend Engineer (Senior+)

Design and implement backend services and API layers for a multi-tenant streaming service operating at scale. Conduct code reviews, troubleshoot technical issues, and enhance existing codebases to improve global performance and reliability.

Senior Backend Engineer

Design and build highly scalable, resilient, and secure microservices and APIs while integrating business databases with advanced AI engines. Optimize backend service performance for real-time AI model hosting and collaborate with AI engineers to deploy solutions within Docker environments.

Backend Developer (Volunteer - Unpaid)

Design, develop, and maintain scalable server-side applications and APIs while ensuring data integrity across databases. Collaborate with cross-functional teams to optimize backend performance, security, and CI/CD pipeline integration.

Desarrollador de Integraciones Backend 30 applicants

Responsible for the design and operation of data and integration solutions. Focuses on building microservices, integration flows, and cloud-native architectures.

Desarrollador Backend (.NET)

The developer will be responsible for designing, building, and maintaining robust, secure, and scalable backend services and APIs. They will work within a microservices architecture, utilizing event-driven messaging to support the organization's technological infrastructure.

Senior Backend Developer (PHP) 18 applicants

You will analyze, design, develop, and document RESTful services and APIs while ensuring database functionality. Additionally, you will write clean, maintainable object-oriented code and integrate data storage solutions within a self-testing paradigm.

REMOTE BACKEND & ZOHO DEVELOPER – SYSTEMS, APIs & AUTOMATION

The developer will build and manage backend systems, including databases, APIs, and automation workflows for web applications and business platforms. They will collaborate with UI/UX designers and frontend developers to ensure the seamless integration and functionality of digital products.

Lead Backend Engineer (Trading) 36 applicants

Architect and build low-latency trading systems, including pricing aggregation, execution engines, and smart order routing. Lead technical architecture, perform code reviews, and mentor team members while ensuring resilient infrastructure in trading environments.

Senior Backend Engineer

Design, build, and maintain scalable distributed backend systems while owning services end-to-end from architecture to reliability. Collaborate with product and engineering teams to shape product decisions and integrate Web3 components like protocol integrations and smart contracts.

Backend Developer (Python / Django) | Senior 11 applicants

You will build and maintain reliable backend services, APIs, and internal tools while managing PostgreSQL schemas and data consistency. Additionally, you will coordinate task flows using Redis and ensure system observability through logging and monitoring.

Backend Software Engineering

You will define, implement, and deliver robust backend features for a probabilistic reasoning engine while writing clean, performant code. You will also collaborate with the team to define implementation strategies and document complex technical solutions.

Senior Backend Java Developer 17 applicants

Design and build scalable backend services and microservices using Java and Spring Boot. Collaborate with cross-functional teams to integrate databases and deploy containerized applications.