Backend Engineer

• Work with the Product Owner to design and implement new features and applications
• Fix bugs in the existing application
• Write tests and execute them on CI
• Manually test features in the staging environment

Senior Ruby on Rails Developer building software that improves millions of users’ lives

Senior Ruby on Rails Developer

Senior Ruby on Rails Developer building software used by millions worldwide.
Designing features, fixing bugs, and testing full-stack applications remotely within EEA-compatible hours.

• Si occuperà della realizzazione e manutenzione di interfacce web moderne.
• Contribuirà all’evoluzione di applicazioni digitali orientate a performance, usabilità e qualità del codice.
• Attività di sviluppo frontend, integrazione con servizi e API backend.
• Implementazione di nuove funzionalità e collaborazione con team tecnici e funzionali.
• Garantire la corretta evoluzione delle soluzioni applicative.
• Contributo all’adozione delle best practice di sviluppo e al miglioramento continuo dell’esperienza utente.

Frontend Developer creating and maintaining modern web interfaces

Frontend Developer – Angular, React, Javascript

Frontend Developer at HRM creating and maintaining modern web interfaces. Collaborating on digital applications focused on performance, usability, and code quality.

• Design and build control-plane services, drivers (e.g., CSI), and tooling that provision, configure, and operate storage for Kubernetes-based AI/compute workloads.
• Integrate high-performance storage platforms — Dell PowerScale, VAST, and comparable systems — into automated, declarative provisioning workflows.
• Build data-path, telemetry, and observability tooling to diagnose and resolve performance, reliability, and scaling issues.
• Write production-quality software — primarily in Go — with strong testing, code review, and operational rigor.
• Deliver infrastructure-as-code (Terraform/OpenTofu) and GitOps-driven pipelines (ArgoCD or Flux) for storage configuration and lifecycle.
• Support bare-metal and hybrid provisioning where storage intersects host and cluster bring-up.
• Deliver storage integration for k0s-based Kubernetes via Cluster API (CAPI) and K0rdent management/child cluster topologies.
• Architect storage software for fully disconnected (air-gapped) environments, including local artifact/mirror connectivity (Harbor) and PKI/TLS considerations.

Software Engineer designing high-performance storage for Kubernetes-based platforms

Senior Software Engineer – Storage

Software Engineer developing high-performance storage solutions for Kubernetes-based AI workloads in a remote EU environment. Joining a leading firm in cloud infrastructure with a focus on innovative solutions.

• Develop and maintain full-stack web applications using Java, Spring Boot, and Vue.js
• Design scalable backend services and REST APIs
• Build responsive, maintainable user interfaces
• Participate in architectural and technical decisions
• Write clean, tested, and well-documented code
• Review code and support other developers
• Investigate and resolve performance and production issues
• Collaborate with developers, QA specialists, project managers, and clients
• Estimate tasks and contribute to sprint planning
• Improve development standards and existing solutions

Senior Full-Stack Developer developing Java and Vue.js web applications

Senior Full-Stack Developer – Java, Vue.js

Senior Full-Stack Developer developing scalable web applications using Java and Vue.js for international projects. Collaborating with clients and teams in a fully remote environment.

• Seeking a Senior Java Developer to join the Investment Accounting / Positions team.
• Develop software on-prem and in the cloud to capture trading transactions.
• Collaborate closely with hedge fund business and team members.
• Provide investment teams with a near real-time, accurate view of trades, positions, P&L, and performance.
• Deliver efficiency across processes, improving access to positions, P&L, and performance.

Senior Java Developer for Investment Accounting team transforming Middle Office

Java Developer, Middle Office Transformation

Senior Java Developer working for an asset management fund's Investment Accounting team. Leading software development to capture trading transactions and provide accurate performance metrics.

• Develop and maintain backend services and APIs in Go
• Design and optimize PostgreSQL schemas and queries for high-volume data
• Build reliable orchestration and integration layers across internal and third-party systems
• Implement metrics, distributed tracing, and observability across services
• Collaborate with the Engineering team on improving the overall Developer Experience
• Implement security best practices
• Collaborate with frontend, fullstack, and the broader engineering team

Backend Engineer developing cybersecurity solutions at Oneleet

Backend Engineer developing and optimizing backend services for cybersecurity platform at Oneleet. Collaborating with cross-functional teams in a fast-paced startup environment.

• Work in a small team and as such take product assignments and lead them to completion.
• You will be responsible for all the phases of planning, development and delivery.
• Actively participate in architectural design and decision-making.
• Conduct code peer-reviews and attend retrospectives to plan and execute improvements as a team.
• Support junior and mid-level team members to achieve high code quality.
• Use modern technologies: Spring Boot, Ruby on Rails, Postgres, gcloud, Kubernetes, Docker, Astra-DB.
• Get involved in technological projects together with experienced Engineers and further improve our architecture, scalability and security to fulfil the need of our ever growing solution.
• Demonstrate great communication, ownership, accountability and team play skills.
• You are not “just” a developer - you will always think about our product and how to improve the experience for our customers.

Senior Backend Engineer developing Java solutions at wealthAPI

Senior Backend Engineer, Java – Spring Boot

Senior Backend Engineer developing Java and Spring Boot solutions for wealthAPI. Collaborating in a small team to create financial software and drive product improvements in a fast-growing fintech startup.

• Build scalable high load systems using Java and Spring.
• Process a large amount of incoming data (>1TB per day).
• Work with Big data. Adapt the product to work with a large amount of data (hundreds of millions records per day).
• Improve system (ETL) reliability.
• Improve test coverage.
• Design, build, deploy, monitor and maintain products.

Senior Java Developer building scalable systems at SplitMetrics

Senior Java Developer

Senior Java Developer building high-load systems and processing big data at SplitMetrics. Collaborating remotely across Europe with a supportive culture and flexible schedule.

• Drive innovation: Build and enhance products to scale Kota’s API and embed products.
• Collaborate for impact: Work closely with teams across Kota to refine procedures, ensuring excellent customer experiences and operational efficiency.
• Own incident management: Serve as an incident responder for technical issues, fostering a blameless culture of learning and iterating for improvement.
• Architect for the future: Research, design, and implement enhancements that strengthen our product and processes.
• Architecting and building new features, for our customer facing APIs and SDKs
• Transforming inefficient internal workflows into self-service features that delight customers and save time.
• Leading technical efforts to resolve customer-reported issues as part of the incident response team.

Senior Product Engineer (Backend) shaping APIs and SDKs for embedded insurance at Kota

Senior Product Engineer – Backend

Senior Product Engineer (Backend) shaping APIs and SDKs for embedded insurance and retirement products. Collaborating across teams to design resilient systems and improve developer experiences.

• Si occuperà di attività di sviluppo backend, manutenzione evolutiva e supporto all’implementazione di nuove funzionalità.
• Collaborerà con team tecnici e funzionali all’interno di un contesto strutturato.
• Seguirà le best practice di sviluppo e parteciperà alle attività di analisi, implementazione e rilascio delle componenti applicative.

Backend Developer focusing on banking platform development

Backend Developer, Java, Springboot

Backend Developer focusing on developing and maintaining a banking platform. Collaborating with teams to implement reliable and scalable solutions following best development practices.

• Crafting clean, efficient, and scalable code as a Full Stack Developer
• Collaborating with a dynamic team to enhance software escrow solutions
• Participating in regular team activities and engaging in a culture of feedback and collaboration
• Contributing to the onboarding and training of new team members

Full Stack Developer crafting scalable solutions in the software escrow industry

Full Stack Developer, Javascript

Full Stack Developer crafting scalable software solutions at Codekeeper, a cloud-focused software escrow company. Join a dynamic remote-first team dedicated to building resilient software products.

• Hands-on engineering and testing of the product
• Hands-on engineering and testing of the internal agent’s framework
• Stay updated with the latest in AI and AI Agents and provide insights

Fullstack Engineer focusing on Generative AI features for cybersecurity startup

Fullstack Engineer, Generative AI – Backend Focus

Fullstack Engineer with a focus on Generative AI, developing a proactive cyber platform. Collaborate with top-tier experts in a fully remote setup.

• Develop the Game server-side application logic
• Evolve the business’s software applications using the latest software development infrastructure and methods (Ruby 3)
• Develop analytics of solutions in the software (observability) and maintain automated tests
• Conduct unit tests, code reviews and refactor source codes, assesses and improves software performance
• Write and document code that meets project standards to deliver the desired functionality aligned with the overall standards and guidelines
• Introduce new technologies and information to improve documentation practices, scalability, testing techniques and refactoring

Senior Backend Developer for high-performance gaming solutions

Senior Backend Developer

Senior Backend Developer focusing on server-side logic for gaming traffic at Booming Games. Requires strong Ruby knowledge and familiarity with various technologies.

• Build and maintain production backend services and APIs in Python (FastAPI)
• Implement retrieval workflows (RAG, embeddings, vector search)
• Lead and work closely with other engineers and stakeholders
• Help keep systems clean, reliable, and easy to extend

Senior Python Engineer building backend services at an EdTech startup

Senior Python Engineer

Senior Python Engineer building and maintaining backend services in Python for an EdTech startup. Collaborate with engineers and implement innovative solutions in the education technology space.

• Deliver production-quality Rust backend code across the six functional domains of the Elections Management System (Platform, Electors, Documents, Elections, Absent Votes, Reporting).
• Work within an AI-assisted delivery workflow using Claude Code contributing to and evolving the framework as the project progresses.
• Participate in sprint ceremonies, backlog refinement, and code reviews.
• Contribute to establishing engineering patterns, CI/CD foundations, and documentation practices from the earliest sprints.
• Support knowledge transfer to our client engineers throughout the engagement.

Principal Engineer for developing Rust solutions in elections management system.

Principal Engineer, Rust

Principal Engineer developing Rust backend solutions for an Elections Management System. Join a global AI transformation team in a meaningful public sector project.

• Design & develop scalable web APIs using C# 12 and ASP.NET Core, ensuring high performance, security, and maintainability across multi-threaded server environments;
• Work with multiple data stores - MSSQL, MongoDB, and Solr (Elasticsearch-based);
• Build and maintain microservices communicating exclusively via RabbitMQ, contributing to the ongoing migration from a monolithic architecture;
• Integrate with AWS services;
• Implement document recognition and parsing pipelines;
• Apply software architecture best practices - SOLID principles, design patterns, and clean code standards;
• Champion code quality through testing, debugging, and thorough code reviews;
• Collaborate in an agile environment with distributed teams, contributing to architectural decisions and the evolution of the platform.

Senior .Net Engineer developing microservices for intelligent document processing platform

Senior .Net Engineer

Senior .Net Engineer designing scalable web APIs and microservices for intelligent document processing platform. Collaborating in an agile environment while implementing software architecture best practices.

• Build and maintain backend services, APIs, webhooks and integration services.
• Develop secure, scalable foundations for multi-tenant education products.
• Build and improve integrations with learning platforms, third-party services, AI providers and internal systems.
• Design reliable data flows for assessment, feedback, learner activity, reporting and operational workflows.
• Build and maintain authentication, authorisation, permissions and audit capabilities appropriate for education products.
• Work with PostgreSQL, BigQuery and modern cloud application infrastructure.
• Build and deploy containerised services in cloud environments.
• Improve reliability, observability, performance and maintainability across backend systems.
• Investigate production issues, identify root causes and implement durable fixes.
• Work closely with Product and AI Engineers to turn product needs into scalable technical systems.
• Engage with education partners where useful to understand real workflows and improve integrations.
• Use AI-assisted development tools appropriately while maintaining strong standards for testing, security and code quality.
• Write clean, tested and maintainable code.

Backend Engineer II for a global EdTech company building AI-enabled products

Backend Engineer II

Backend Engineer II for a global EdTech company developing AI-enabled educational products. Responsibilities include building scalable backend services, integrations, and improving system reliability.

• Develop and modernise backend services, helping migrate functionality from a legacy JBoss monolith to microservices.
• Build event-driven integrations using Kafka and Spring Cloud Stream.
• Design and maintain REST APIs and integration layers between legacy and modern systems.
• Deploy and manage containerised applications using Docker and AWS ECS.
• Contribute to CI/CD improvements using Jenkins and Gradle to accelerate delivery.
• Participate in code reviews and promote engineering best practices.
• Collaborate with distributed teams to deliver scalable, high-quality solutions.
• Act as an AI champion, supporting the adoption of AI-assisted development tools and best practices.

Senior Software Engineer developing cloud-native microservices for travel technology industry

Senior Software Engineer, Java

Senior Software Engineer developing cloud-native microservices for the travel technology industry at Zartis. Involved in modernising a complex travel technology platform with a focus on AI-driven tools.

Backend Engineer jobs in Europe

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