Remote Backend Developer jobs open to Poland.

Python · GCP · Docker

3 years of experience, Python, FastAPI, PostgreSQL, MongoDB, Celery, Redis, OpenAI, Google Cloud Platform, Docker, Nginx, Asynchronous architectures

SBC PerformanceSBC Performance is a global digital marketing and ad-tech ecosystem headquartered in the U.S., specializing in high-converting marketing solutions for brands in the EdTech sector.

Python · Kotlin · Rust

Go, Kotlin, Rust, Python, SQL, Orchestration systems, Data lifecycle management, Schema evolution, Data correctness, Stateful stream processing, Distributed systems, AI tools proficiency, Clear written communication

GCP · Kubernetes

Go, Kubernetes, Large-scale backend development, Microservices architecture, Performance analysis, Security product architecture, GCP services, Distributed systems optimization, API integration with SaaS applications

CyberhavenCyberhaven is a remote-based B2B cybersecurity company specializing in AI-powered data protection and advanced threat detection for organizations globally.

SQL

Database performance optimization, Strong SQL, Backend engineering, Data architecture design, Lakehouse experience, Schema design for semi-structured data, Streaming ingestion experience, Migration or re-architecture track record

OscilarOscilar is a US-based fintech B2B SaaS provider specializing in AI-native risk decisioning for fraud prevention, credit underwriting, and AML compliance, serving banks and digital organizations.

JavaScript · Python · GCP

5 years of experience, Cloud-native technologies (GCP preferred), Kubernetes, ArgoCD, Terraform, GitHub, Python, JavaScript, Go, Technical leadership, Internal Developer Platforms, Cost optimization

MozillaMozilla is a Mountain View, California-based non-profit organization that develops open-source software, including the privacy-focused Firefox browser and Thunderbird email client, targeting global consumers.

Rust · Ruby

AI agent experience, Rust, Ruby, Go, Validation gap expertise, System design, Prototyping, Influencing without authority, Strong written communication

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

3 years of experience, Metal, DX11, DX12, C++, Objective-C, GPU profiling tools, multithreading, console SDKs, XCode, CPU profiling tools

Go · GCP · Kubernetes

Golang, Architectural vision, Distributed microservices, Domain-Driven Design (DDD), High-scale distributed databases, Google Cloud Platform (GCP), Kubernetes, Mentorship

C++, Browser source code, Network (TLS/SSL), Browser fingerprinting, Website unblocking for scraping, Browser automation & scalability

OxylabsOxylabs is a Lithuania-based B2B premium proxy service provider specializing in web scraping solutions and data gathering for enterprise clients across industries like e-commerce and cybersecurity.

Kubernetes

Elixir or Erlang, Distributed systems, Real-time, low-latency systems, Kubernetes, CI/CD, Observability mindset, Networking fundamentals, Backend systems ownership, Service-oriented architectures, Logging, metrics, dashboards, alerting

TelnyxTelnyx is a global telecommunications B2B company specializing in cloud-native VoIP solutions and connectivity applications, headquartered in an undisclosed location, serving businesses worldwide.

Rust · Kubernetes

5 years of experience, Rust, Kubernetes Control Planes, DPU architectures, Datacenter Networking, gRPC/Protobuf, OpenTelemetry, async concurrency models, mock-driven testing, custom Kubernetes operators, high-density infrastructure

MirantisMirantis is a Campbell, California-based B2B company specializing in open source cloud computing and Kubernetes-native AI infrastructure, serving diverse sectors including automotive, healthcare, and financial services.

PHP

PHP, SOLID principles, NoSQL (Redis, MongoDB), AI-assisted engineering tools, Cloud-native infrastructure, High-volume transaction applications, Technical documentation, Agile environment, Problem-solving mindset, Empathy in teamwork

Java · AWS

5 years of experience, Java 7, Java 8, Oracle, Progress, Liquibase, AWS, Enterprise application design, Object-oriented programming, Agile methodologies, Oil & Gas Upstream knowledge

Netrix GlobalNetrix Global is a global B2B IT consulting and managed services company headquartered in an unspecified location, specializing in cybersecurity, cloud migration, and digital workplace solutions for various industries.

Deep Architecture Experience, Modularization in Production, Cross-Team Technical Leadership, Agentic AI Leadership, Influence Without Authority, Mentorship, Product Judgment

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

Ruby · Kubernetes · Docker

Ruby/Rails, Go, AI fluency, Feature ownership, Clear communication, Production backend applications, Observability, Docker, Kubernetes, PostgreSQL

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

Ruby

3 years of experience, Ruby on Rails, PostgreSQL, REST APIs, Sidekiq, Scalable backend development, Debugging, Performance optimization, Clean code practices

2 years of experience, Technical document analysis, Cloud infrastructure experience, Attention to detail, Ability to interpret technical concepts, Experience reviewing engineering reports, Familiarity with technical architecture documentation

Python · Kotlin · AWS

8 years of experience, Python, Kotlin, AWS, MySQL, Spark, Kubernetes, Distributed systems, Technical strategy, KYC Verification, Identity Data Management

AffirmAffirm is a U.S.-based fintech company offering a buy now, pay later (BNPL) service that allows consumers to make purchases in installments, primarily targeting the retail sector with both B2C and B2B business models.

SQL

4 years of experience, Scala, Functional programming, Distributed backend services, SQL databases, MySQL, Kafka, Redis, Clickhouse, Mentorship, Technical initiatives

Sprout SocialSprout Social, Inc. is a Chicago-based B2B social media management platform that helps brands communicate with customers and measure their social media effectiveness.

Python · Java · SQL

2 years of experience, Java, Python, AWS, Kubernetes, MySQL, NSQ, Hbase, Object-oriented programming, Building resilient systems, Using third-party APIs, SQL/NoSQL databases

Sprout SocialSprout Social, Inc. is a Chicago-based B2B social media management platform that helps brands communicate with customers and measure their social media effectiveness.

Python · Java · SQL

4 years of experience, Java, Python, Scalable backend services, SQL, NoSQL, Mentorship, Technical architecture, Agile methodology

Sprout SocialSprout Social, Inc. is a Chicago-based B2B social media management platform that helps brands communicate with customers and measure their social media effectiveness.

SQL

7 years of experience, Scala, Distributed systems, Functional programming, Technical mentoring, SQL databases

Sprout SocialSprout Social, Inc. is a Chicago-based B2B social media management platform that helps brands communicate with customers and measure their social media effectiveness.

Python · Java · SQL

7 years of experience, Java, Python, AWS, Kubernetes, Distributed systems, Technical leadership, SQL, NoSQL, Cloud computing

Sprout SocialSprout Social, Inc. is a Chicago-based B2B social media management platform that helps brands communicate with customers and measure their social media effectiveness.

Python · Ruby

Ruby on Rails, Python, PostgreSQL, API design, AI-assisted development, Full stack background, Mentoring engineers, Driving substantial projects

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

TypeScript

TypeScript, Command-line tool development, Technical leadership, Architectural decision-making, Developer tooling design, IDE extension development

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

Ruby

Go, Distributed systems, Technical project ownership, Systems design, Performance optimization, Incident response, Mentoring engineers, Ruby, gRPC, Git internals

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

Deep Backend Expertise, Agentic AI Expertise, Architectural Judgment, High-throughput distributed systems, Containerized production operations, Database performance knowledge

GitLabGitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

Go · Kubernetes

Go, Kubernetes, Kubernetes architecture, Kubernetes APIs, Cloud-native technologies, Problem-solving in distributed systems, AI inference and model training

GcoreGcore is a Luxembourg-based B2B cloud and edge computing company specializing in web performance, content delivery, and security solutions for global industries.

Linux kernel development, x86 computing architecture, Virtualization technologies, Open-source software development, Performance optimization, Low-level debugging tools, Memory management, Collaboration with open-source communities

Java · Kubernetes · Docker

5 years of experience, Java 11/17+, Spring Boot, Apache Kafka, PostgreSQL, Docker, Kubernetes, Deep JVM internals, AI tools proficiency, Distributed systems experience, Microservices architecture, Event-driven patterns

InPostInPost is a Kraków-based logistics company specializing in out-of-home delivery solutions through a network of Automated Parcel Machines, serving the e-commerce industry across Europe with both B2B and B2C services.