Senior Backend Engineer – P2P and Distributed Systems

Pragmatike

full-time

Posted on: 9/22/2025

Origin: • 🇵🇹 Portugal

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Senior

AWSAzureCloudDockerGoGoogle Cloud PlatformJavaKubernetesMicroservicesTCP/IP

About the role

Design and develop scalable, distributed, server-side software applications and microservices
Develop and optimize mission-critical software with emphasis on system programming and performance tuning
Implement robust peer-to-peer (P2P) communication solutions (P2P experience is a MUST)
Contribute to and/or build projects using libp2p or similar P2P libraries
Ensure cross-platform functionality and application compatibility
Collaborate within an Agile Scrum team to define and prioritize backlog items and identify risks/dependencies
Create clean, maintainable, and reusable code
Optimize solutions for performance, reliability, and security
Establish and enhance infrastructure including deployment pipelines and observability tools
Work with multi-cloud environments (AWS, Azure, GCP)
Participate in application lifecycle management
Engage closely with product and design teams to grasp end-user requirements
Conduct thorough code reviews and mentor other engineers
Champion best engineering practices and high-quality software craftsmanship

Minimum 5-6 years of experience as a Senior/Lead Backend Developer
MS degree in Computer Science or a closely related technical field
Demonstrated technical proficiency in Go and/or Java
P2P experience is a MUST
Experience with libp2p or similar P2P libraries
Strong understanding of design patterns and multi-threaded programming
Solid grasp of internet protocols and technologies: TCP/IP, HTTP, HTML, XML
Familiarity with service-oriented designs and methodologies: REST, JSON
Ability to build well-structured, secure RESTful APIs
Deep understanding of Agile development principles and the Agile Manifesto
English is mandatory; French is a plus
Strong experience with AWS, Azure, and GCP is highly desirable
Hands-on experience with Kubernetes and Docker (preferred)
Experience in infrastructure engineering and managing production environments (preferred)
Skilled in using tracing/logging systems to rapidly diagnose production issues (preferred)
Proven track record building business-critical, large-scale, high-availability systems (preferred)
Experience with decentralized systems, related startups or open-source projects (preferred)
Familiarity with continuous delivery pipelines and DevOps practices (preferred)