Mirantis is a B2B open-source cloud computing, container management, and AI infrastructure company headquartered in Campbell, California. Originally known as a core contributor to OpenStack, Mirantis now provides open-cloud software and managed services centered on Kubernetes, multi-cloud platforms, and enterprise AI workloads.
Calgary • Warsaw • Brussels • Prague • Poznań • DevOps • Information Technology • Cloud Computing • 1001-5000 employees
≈ $72k – $114k per year (Estimated) • Senior • 5+ years exp • Remote/Hybrid (Warsaw, Poland) • Bachelor's Degree • Full-Time • Senior • English
Go
Rust
SQL
Rust
Axum
SQLx
Tonic
Databases
PostgreSQL
AI/ML
InfiniBand
NVLink
DevOps
Cilium
gRPC
Kubernetes
OpenTelemetry
Platform Engineering
Rest API
Splunk
AWS
KubeVirt
KVM
Cybersecurity
Calico
Keycloak
$70k – $80k per year (gross) • Equity • Senior • Poznań • Remote (Poland) • Full-Time • Senior
Go
DevOps
AWS
Kubernetes
Platform Engineering
GitHub Actions
QEMU
GitHub
CDQ enables large enterprises to tackle master data quality and data maintenance efforts collaboratively with innovative software solutions.
Wrocław • Data Management • Data & Analytics • Data Quality
≈ $112k – $250k per year (Estimated) • Lead • Remote (Poland) • Full-Time • Staff • Polish: C1 • English: C1
Java
SQL
Java
Spring Boot
Databases
Apache Kafka
MariaDB
RabbitMQ
Redis
AI/ML
Knowledge Graph
$54k – $65k per year • Middle • 3+ years exp • Wrocław • Remote (Poland) • Full-Time • Middle • Polish
Java
Java
Spring Boot
Databases
ElasticSearch
Milvus
Pinecone
Qdrant
Apache Kafka
MongoDB
Redis
AI/ML
AI Agents
AWS Bedrock
Embeddings
LLM
Model Context Protocol
Prompt Engineering
RAG
Semantic Search
Anthropic
OpenAI
Semantic Search
Haystack
Ollama
vLLM
OCR
DevOps
AWS
Docker
≈ $91k – $222k per year (Estimated) • Senior • 5+ years exp • Remote (Poland) • Full-Time • Senior • Polish: C1
Java
Java
Spring Boot
Databases
Apache Kafka
ElasticSearch
Milvus
MongoDB
Pinecone
Qdrant
Redis
AI/ML
AI Agents
AWS Bedrock
Embeddings
Haystack
LLM
Model Context Protocol
Ollama
Prompt Engineering
RAG
Semantic Search
vLLM
Anthropic
OCR
OpenAI
Semantic Search
DevOps
AWS
Docker
Box is a leading Cloud Content Management platform that provides secure file storage, collaboration, and document workflow automation for enterprise organizations. The company helps businesses manage unstructured data across teams while meeting strict security, compliance, and governance requirements. Beyond traditional file sharing, it integrates artificial intelligence tools to summarize documents, extract key insights, and automate complex business processes.
HQ: Redwood City, United States • Professional Services • Internet Services • Software • Communication & Collaboration • Cloud Storage & File Sharing • Document Management • 501-1000 employees
≈ $35k – $61k per year (Estimated) • Middle • 4+ years exp • In office (Warsaw, Poland) • Middle • English: C1
Java
Python
JavaScript
TypeScript
Databases
PostgreSQL
AI/ML
AI Agents
Vertex AI
Frontend
React.js
DevOps
GCP
CI/CD
GitHub
GitHub Actions
Jenkins
Management
Jira
≈ $35k – $61k per year (Estimated) • Middle • 3+ years exp • In office (Warsaw, Poland) • Contractor • Middle • English: C1
Java
TypeScript
JavaScript
Frontend
React.js
DevOps
AWS
Azure
Docker
GCP
Kubernetes
Rest API
CI/CD
Git
GitHub
Management
Jira
≈ $35k – $61k per year (Estimated) • Middle • 3+ years exp • In office (Warsaw, Poland) • Contractor • Middle • English: C1
Java
TypeScript
JavaScript
Frontend
React.js
DevOps
AWS
Azure
Docker
GCP
Kubernetes
Rest API
CI/CD
Git
GitHub
Management
Jira
Blockchain Capital is one of the earliest dedicated digital asset venture firms, founded in 2013 in San Francisco. It has invested across many funds in exchanges, infrastructure, decentralised finance and consumer applications. The firm was also a pioneer of tokenised fund structures, issuing a security token to represent limited partner interests.
HQ: San Francisco, United States • Blockchain & Crypto • Est. 2013
≈ $33k – $42k per year (Estimated) • Senior • 7+ years exp • Remote (Argentina, Brazil, Bulgaria, Colombia, Cyprus) • Full-Time • Senior
Rust
Databases
Apache Kafka
≈ $40k – $113k per year (Estimated) • Senior • 5+ years exp • Remote (Argentina, Brazil, Bulgaria, Colombia, Czech Republic) • Full-Time • Senior
Python
Ruby
Rust
TypeScript
JavaScript
Databases
MariaDB
MySQL
Redis
Frontend
React.js
Mobile
React Native
DevOps
CI/CD
Docker
GitLab CI
Kubernetes
Terraform
GitLab
Analytics
A/B Testing
≈ $45k – $91k per year (Estimated) • Middle • 3+ years exp • Remote (Argentina, Brazil, Bulgaria, Colombia, Cyprus) • Full-Time • Middle
Rust
Databases
Apache Kafka
Akamai is the cybersecurity and cloud computing company that powers and protects business online.
Singapore • Hong Kong • CDN • Cybersecurity • Cloud Computing • 1001-5000 employees
≈ $92k – $224k per year (Estimated) • Senior • Remote (Poland) • Senior
Java
Python
Scala
Scala
Akka
Databases
Apache Kafka
PostgreSQL
RabbitMQ
Redis
AI/ML
Flink
Spark
DevOps
Akamai
Middle • Remote (Poland) • Bachelor's Degree • Middle • English
Bash
Python
DevOps
Akamai
Remote (Poland)
JavaScript
Python
TypeScript
Java
Python
FastAPI
Flask
Java
Spring Framework
Frontend
Angular
DevOps
Akamai
Docker
Linode
Cybersecurity
OWASP Top 10
Design
Figma
Kalepa delivers critical risk insights and decision-ready quotes for every submission in minutes. Move faster, act decisively, and consistently select the most profitable risks - across every line you write.
Warsaw • New York • Salt Lake City • Artificial Intelligence • Financial Services • Insurance • Est. 2018
$100k – $185k per year • Equity • Staff+ • 8+ years exp • Remote (Europe) • Staff
Python
Databases
PostgreSQL
AI/ML
LLM
DevOps
Amazon EC2
AWS
AWS Lambda
$82k – $169k per year • Equity • Senior • 5+ years exp • Warsaw • Remote (Poland) • Full-Time • Senior
Python
Databases
PostgreSQL
DevOps
Amazon EC2
AWS Lambda
AWS
$102k – $189k per year • Equity • Staff+ • 8+ years exp • Warsaw • Remote (Poland) • Full-Time • Staff
Python
Databases
PostgreSQL
DevOps
Amazon EC2
AWS Lambda
AWS
SimCorp is a global provider of integrated investment management solutions and services for buy-side financial institutions. Headquartered in Denmark, the company delivers front-to-back technology platforms that support asset managers, pension funds, sovereign wealth funds, and central banks. Its flagship software platform, SimCorp Dimension, automates portfolio management, risk analytics, compliance, and back-office operations across multi-asset investment strategies.
HQ: Copenhagen, Denmark • Wealth Management • Financial Services • Asset Management • 1001-5000 employees
≈ $22k – $58k per year (Estimated) • Lead • 7+ years exp • Remote/Hybrid (Hyderabad, India, Warsaw, Poland) • Full-Time • Staff
C#
PowerShell
C#
.NET
AI/ML
RAG
Semantic Kernel
DevOps
Azure
Bicep
CI/CD
OpenTelemetry
≈ $50k – $80k per year (Estimated) • Senior • 5+ years exp • Remote/Hybrid (Warsaw, Poland) • Bachelor's Degree • Full-Time • Senior • Polish (Optional)
C#
SQL
C#
.NET
DevOps
Azure
Azure DevOps
CI/CD
Git
TeamCity
≈ $57k – $88k per year (Estimated) • Lead • 7+ years exp • Remote/Hybrid (Warsaw, Poland) • Bachelor's Degree • Full-Time • Staff
C#
SQL
C#
.NET
DevOps
Azure
Azure DevOps
CI/CD
Git
TeamCity
Zencargo is a London company founded in 2017 that combines digital freight forwarding with supply chain software. Its platform gives importers visibility of shipments and recommends how to route and fund inventory. The company works with consumer brands and retailers moving goods from Asia into Europe.
HQ: London, United Kingdom • Freight Forwarding • Supply Chain • Transportation & Logistics • 51-200 employees • Est. 2017
Remote (Europe) • Full-Time
GitLab is a comprehensive, open-source DevSecOps platform that enables software teams to manage the entire software development lifecycle within a single application. It streamlines operations by offering integrated tools for source code management, continuous integration and deployment (CI/CD), security testing, and project planning. By consolidating the entire pipeline into one continuous workflow, it helps engineering teams accelerate code delivery, improve collaboration, and maintain strict security compliance.
HQ: San Francisco, United States • Information Technology • Cybersecurity • DevSecOps • DevOps • 1001-5000 employees • Est. 2011
≈ $65k – $101k per year (Estimated) • Equity • Senior • Remote (Poland) • PhD • Full-Time • Senior
ClickHouse
PostgreSQL
AI/ML
Prompt Engineering
AI Agents
DevOps
Kubernetes
GitLab
≈ $65k – $100k per year (Estimated) • Equity • Senior • Remote (Poland) • PhD • Full-Time • Senior
Kotlin
TypeScript
DevOps
GitLab
≈ $64k – $98k per year (Estimated) • Equity • Senior • Remote (Poland) • PhD • Full-Time • Senior
Go
Ruby
DevOps
Git
gRPC
GitLab
Turnitin is an education technology company headquartered in Oakland, California, and founded in 1998. The company provides a suite of software solutions for academic integrity, including plagiarism detection, AI-generated writing identification, and digital grading tools like Feedback Studio and Gradescope. It serves over 16,000 educational institutions and research publishers across 140 countries, operating as a subsidiary of Advance Publications.
HQ: Oakland, United States • Skill Assessment • LLM & Generative AI • Artificial Intelligence • Secondary Education • Higher Education • Education • EdTech Platforms • Est. 1998
≈ $60k – $101k per year (Estimated) • Lead • 8+ years exp • Warsaw • Remote (Poland) • Full-Time • Senior • English
Java
JavaScript
Databases
DynamoDB
Frontend
React.js
Web Components
DevOps
AWS
AWS Lambda
CI/CD
GCP
Amazon EventBridge
API Gateway
Wingtra is a Swiss drone company founded in 2016 as a spin-off of ETH Zurich. Its WingtraOne vertical take-off aircraft maps large areas at survey-grade accuracy for mining, construction and agriculture. The company sells through a global distribution network across dozens of countries.
HQ: Zurich, Switzerland • Electronic Components • Drones & UAVs • Hardware • Est. 2016
≈ $107k – $169k per year (Estimated) • Remote (Europe) • Bachelor's Degree • Full-Time
TypeScript
JavaScript
Databases
PostgreSQL
Frontend
Next.js
React.js
DevOps
CI/CD
Marketing
HubSpot
Affirm is a U.S. fintech company founded in 2012 and headquartered in San Francisco. It offers buy now, pay later and installment payment products that let consumers split purchases into transparent, fixed payments. The company also provides merchant tools and a consumer app to support checkout financing and payment management.
HQ: San Francisco, United States • Financial Services • Lending • FinTech • 1001-5000 employees • Est. 2012
$192k – $257k per year • Equity • Staff+ • 8+ years exp • Remote (United Kingdom, Poland, Spain) • Internship • Staff
Kotlin
Python
Databases
MySQL
AI/ML
Spark
DevOps
AWS
Kubernetes
≈ $104k – $182k per year (Estimated) • Equity • Staff+ • 8+ years exp • Remote (United Kingdom, Poland, Spain) • Internship • Staff
Kotlin
Python
Databases
MySQL
AI/ML
Spark
DevOps
AWS
Kubernetes
≈ $75k – $116k per year (Estimated) • Equity • Senior • 4+ years exp • Remote (Poland, Spain) • Internship • Senior
Kotlin
Python
Databases
MySQL
Mobile
Declarative UI
DevOps
AWS
Kubernetes
MetalBear builds mirrord for AI-powered teams. Run code against a real cluster from line one. 10× faster dev cycles, zero per-developer environment costs.
London • New York • Sydney • Information Technology • Software • Virtualization • DevOps • Artificial Intelligence
≈ $45k – $92k per year (Estimated) • Equity • Middle • 3+ years exp • Remote (Poland) • Full-Time • Middle
Rust
AI/ML
AI Agents
DevOps
Docker
GitOps
Kubernetes
Citi is a leading global financial services company headquartered in New York City, offering a broad range of banking, investment, and wealth management services to consumers, corporations, and institutions. As one of the world's largest banking institutions, it operates across more than 160 countries and jurisdictions, serving as a critical facilitator of global commerce. Through its primary consumer division, Citibank, alongside its institutional businesses, the company provides everyday banking, credit cards, capital markets solutions, and cross-border payment infrastructure worldwide.
HQ: New York, United States • Credit Cards • Financial Services • Banking • 1001-5000 employees • Est. 1900
≈ $59k – $93k per year (Estimated) • Senior • Remote/Hybrid (Warsaw, Poland) • Full-Time • Senior
Bash
Go
Java
Python
AI/ML
Copilot
Model Context Protocol
Devin
DevOps
Bitbucket
CI/CD
Docker
Grafana
Splunk
GitHub
Management
Confluence
Jira
≈ $56k – $89k per year (Estimated) • Senior • 8+ years exp • Remote/Hybrid (Warsaw, Poland) • Full-Time • Staff • Russian: C1 • English: C1
C#
Java
COBOL
C#
ASP.NET Core
Java
Hazelcast
COBOL
IBM MQ
Databases
ActiveMQ
Apache Kafka
MS SQL
Redis
DevOps
Bitbucket
CI/CD
Git
Jenkins
Analytics
ETL/ELT
≈ $43k – $121k per year (Estimated) • Executive • Remote/Hybrid (Warsaw, Poland) • Master's Degree • Full-Time • Senior • English
Python
DevOps
CI/CD
Git
Jenkins
Mindrift is an expert-sourcing and AI training platform owned by Toloka (a data services enterprise owned by Nebius Group, Nasdaq: NBIS), operating primarily out of Amsterdam, Netherlands. Launched by Toloka CEO and founder Olga Megorskaya to elevate crowd-sourced data generation into high-level human feedback, Mindrift operates on a B2B data-as-a-service (DaaS), custom enterprise AI training contract, and freelance expert marketplace model.
HQ: Amsterdam, Netherlands • Professional Services • Data Entry & Processing • Cybersecurity • 1001-5000 employees • Est. 2014
up to $80k per year • Senior • 5+ years exp • Warsaw • Remote (Poland) • Freelance • Senior • English: C1
JavaScript
Python
Python
Beautiful Soup
AI/ML
OpenRouter
LangChain
LLM
DevOps
AWS
Docker
GitHub
QA
Selenium
up to $80k per year • Senior • 5+ years exp • Remote (Bulgaria, Czech Republic, Hungary, Poland, Romania) • Freelance • Senior • English: C1
JavaScript
Python
Python
Beautiful Soup
AI/ML
OpenRouter
LangChain
LLM
DevOps
AWS
Docker
GitHub
QA
Selenium
Testlio is an AI-powered crowdsourced software testing and quality assurance (QA) platform headquartered in Austin, Texas, with operational origins in Tallinn, Estonia. Founded in 2012 by Kristel Kruustük and Marko Kruustük, the Series B enterprise has raised over $19 million in venture backing from investors including Spring Lake Equity Partners and Techstars.
HQ: Austin, United States • Software • Information Technology • Quality Assurance • Est. 2012
Equity • Lead • 15+ years exp • Remote (United Kingdom, Poland) • Freelance • Architect • English: C1
LLM
LLM Guardrails
DevOps
AWS
CI/CD
Cybersecurity
ISO 27001
Gradle by Develocity is the open source build system for Java, Android, and Kotlin developers.
≈ $114k – $237k per year (Estimated) • Equity • Staff+ • Remote (Europe) • Staff • English
Java
Kotlin
Python
JavaScript
Java
Gradle
Maven
Micronaut
Quarkus
AI/ML
AI Agents
Context Engineering
Frontend
npm
Mobile
JUnit
DevOps
AWS
Docker
Kubernetes
Best AI recruitment software with built-in CRM for executive search firms. Stardex combines the best ats system with AI recruiting tools, candidate tracking, and client management in one platform. Built for recruiters and agents of recruiters.
Amsterdam • New York • Cybersecurity • Artificial Intelligence • Human Resources • 51-200 employees
$30k – $50k per year • Junior • 1+ year exp • Remote (India, Argentina, Colombia, Mexico, Poland) • Full-Time • Junior
TypeScript
Node JS
Frontend
React.js
Design
Figma
Our mission is to create influencer marketing software that's powerful enough for the world's largest companies, yet nimble enough for the next generation of innovative brands. To do that, we're going to need the brightest minds in the business.
New York • Manila • Toronto • Los Angeles • Ontario • Influencers • Sales & Marketing • Influencer Marketing • Est. 2014
$80k – $101k per year • Equity • Senior • 5+ years exp • Warsaw • Remote (Poland) • Full-Time • Senior • English: C1
Node JS
PHP
TypeScript
JavaScript
Databases
Apache Kafka
AI/ML
AI Agents
Function Calling
Model Context Protocol
LangChain
A2A
CrewAI
LangGraph
LLM
AWS Bedrock AgentCore
AWS Strands Agents
Frontend
GraphQL
React.js
DevOps
AWS
CI/CD
Amazon EventBridge
Management
Google Workspace
$92k – $115k per year • Equity • Senior • 8+ years exp • Warsaw • Remote (Poland) • Full-Time • Staff
JavaScript
Node JS
PHP
SQL
TypeScript
Databases
Apache Kafka
MS SQL
PostgreSQL
RabbitMQ
AI/ML
Claude
Cursor
DevOps
AWS
Incident Management
Alpaca is a developer-first financial infrastructure, clearing, and brokerage API enterprise headquartered in San Mateo, California. Founded in 2015 by Yoshi Yokokawa and Hitoshi Harada, the company has raised over $320 million in venture funding - including a $150 million Series D at a $1.15 billion valuation led by Drive Capital, alongside Citadel Securities, Portage, and Horizons Ventures.
HQ: San Mateo, United States • Cybersecurity • Blockchain & Crypto • Financial Services • FinTech • Capital Markets • Est. 2015
Equity • Remote (Europe)
C++
Go
Java
Python
Rust
Scala
AI/ML
Spark
DevOps
AWS
Heroku
Equity • Senior • Remote (EU) • Senior
Go
Node JS
JavaScript
Node JS
Commander.js
AI/ML
Claude
Claude Code
Cursor
OpenAI Codex
DevOps
gRPC
Management
Slack
Equity • Middle • 3+ years exp • Remote (EU) • Bachelor's Degree • Middle
Python
SQL
Databases
Google Bigtable
AI/ML
Spark
DevOps
Docker
Kubernetes
AWS
Azure
GCP
Google GKE
Grafana
gRPC
Prometheus
WebSockets
Salary range
| Seniority |
Jobs |
25% |
Median |
75% |
| Junior |
16 |
$32K |
$42K |
$64K |
| Middle |
47 |
$64K |
$74K |
$86K |
| Senior |
205 |
$80K |
$93K |
$114K |
| Staff |
25 |
$130K |
$157K |
$188K |
| Lead |
15 |
$96K |
$102K |
$122K |
| All levels |
404 |
$71K |
$86K |
$110K |
Based only on the listings that state pay. Gross annual amounts, converted to USD so roles in different currencies stay comparable.
The market right now
Alion currently lists 1,028 open Backend Developer jobs in Warsaw from 349 companies. 71 of them were posted or refreshed in the last seven days. 315 of the employers have posted something in the last three months, which is the pool worth watching if you are starting a search now. Every listing links straight to the employer, so you apply on their own board rather than through an intermediary.
What these roles pay
404 of these Backend Developer jobs in Warsaw state pay directly. Across them the middle half of the market sits between $71K and $110K a year, with a median of $86K. By level, the median runs junior at $42K, middle at $74K, senior at $93K, staff at $157K, and lead at $102K. The step from junior to lead is worth about 2.4x on median pay. Figures are gross annual amounts converted to US dollars, so roles in different currencies stay comparable.
Where the work is
The largest concentrations of these roles are Poland (697), Netherlands (15), France (12), Ireland (9), and Germany (9). 66% of the listings are fully remote and a further 13% are hybrid, so a large part of this market is open to you regardless of where you live.
Who is hiring
The employers with the most open Backend Developer jobs in Warsaw right now are Affirm (32), Canonical (32), SimCorp (27), Spyrosoft (20), Nexio Management (17), and Box (13). Each company page on Alion carries its size, funding stage, tech stack and every other position it has open, so you can judge the employer before you spend an evening on the application.
What employers ask for
Reading across the current listings, the tools that come up most often are CI/CD (421), JavaScript (381), Kubernetes (372), Python (370), Java (328), AWS (321), SQL (314), and PostgreSQL (305). The counts are how many of these openings name each one, which is a better guide to what is actually being hired for than a generic skills list.
Relocation, visas and equity
Of the current Backend Developer jobs in Warsaw, 15 state visa sponsorship, 19 offer a relocation package, and 100 include equity. These are filters on the list above, so you can narrow it to the ones that make a move possible for you.
