748,431open jobs
45,981companies
110,859added this week
Browse all
Salary
≈ $64k – $102k per year (Estimated)
Location
In office (Katowice)
Seniority
Principal · 7+ years exp

Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Sep 22, 2026.

Overview
Company
Impact
Profile match
Headquartered in London, United Kingdom, EY (Ernst & Young) is a multinational professional services network and one of the "Big Four" accounting firms. The organization provides financial assurance and auditing, tax advisory, management and technology consulting, and strategy and transactions advisory through its EY-Parthenon arm. Operating across more than 150 countries, it delivers risk management, digital transformation, data analytics, and regulatory compliance solutions to multinational corporations, financial institutions, and government entities worldwide.

Principal Software Engineer

Location: Katowice - 2 days in office / 3 days remote

Let us introduce you the job offer by EY GDS Poland - a member of the global integrated service delivery center network by EY.

The opportunity

We are looking for a Principal Software Engineer with expertise in .Net technology, Cloud and experience in leading development teams who will join EY Digital team and strength our cloud competency in providing modern solutions.

Your key responsibilities

  • Technical leadership of development teams and solutions to deliver high quality software for our clients
  • Applying object-oriented and functional programming styles to real-world software engineering problems.
  • Work with Cloud Architecture, Microservices Architecture and Container Technologies (AKS/Kubernetes, Docker etc.)
  • Demonstrate understanding of high-quality coding and testing practices.
  • Adopt Agile software delivery techniques and technologies including Continuous Integration & Continuous Delivery (CI/CD).
  • Developing solutions using a variety of technologies and tools to marry on-premise and cloud-based systems together.
  • Helping in solutioning and offering to our Clients

Skills and attributes for success

  • A background of working with teams and development best practices.
  • A willingness to be flexible in responding to issues as they occur and the ability to identify product/deployment improvements to mitigate future occurrences.
  • Self-motivated, Strong communication and team building skills.
  • Work iteratively in a team with continuous collaboration.

To qualify for the role, you must have

  • 7 years of experience working with .Net technologies (C#, .Net Core, ORM ie. EF or nHibernate, .Net Framework etc.)
  • Strong knowledge of architectural and design patterns, Clean Code and Testing best practices
  • Experience in Azure or other public cloud
  • Knowledge of database technologies like MS SQL or NoSQL DB
  • Experience with source code management (GIT), Continuous Integration, Continuous Delivery and automated deployments
  • BTech/MTech OR Master’s in Computer Applications

Ideally, you’ll also have

  • Familiarity with concepts around Web Frameworks (like React or Angular)
  • Familiarity of Reactive Architecture
  • Experience in leading project team(s) for external Clients

What we look for

As we are a dynamic team of passionate specialists, and we work in international teams all over the world, we will look for the same business acumen. Facing with customers, we are "out of box thinking" professionals. Our top performers have a team players attitude and they cope with challenges on the daily basis. If it all sounds familiar to you - we are looking forward to seeing you on board.

What we offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across nine locations - Argentina, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom - and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. We’ll introduce you to an ever-expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

  • Continuous learning: You’ll develop the mindset and skills to navigate whatever comes next.
  • Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
  • Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.
  • Diverse and inclusive culture: You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

About EY

EY | Building a better working world

EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.

Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.

Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

If you can demonstrate that you meet the criteria above, please contact us as soon as possible.

The exceptional EY experience. It’s yours to build.

In compliance with the requirements of the Whistleblower Protection Act, our company has established the Procedure for reporting breaches of law and undertaking appropriate follow-up actions. Any misconduct should be reported through the EY Ethics Hotline.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
748,431 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Backend
Similar stack
Same company
Katowice
≈ $49k – $78k per year (Estimated) • Hybrid • 3+ years exp • Bachelor's Degree • Wrocław
PHP
C#
PHP
WooCommerce
C#
.NET
Databases
PostgreSQL
MS SQL
OpenSearch
DevOps
AWS
Amazon EC2
Amazon S3
Amazon ECS
Apply
Platform Architect 4 days ago
≈ $92k – $170k per year (Estimated) • In office • Full-Time • 15+ years exp • Kilkenny
AI/ML
AI Agents
LLM Guardrails
DevOps
GCP
Azure
AWS
Cybersecurity
PCI DSS
SOC 2
GDPR
Analytics
Master Data Management
Apply
Sr Software Engineer 5 hours ago
≈ $28k – $60k per year (Estimated) • Hybrid • Full-Time • 5+ years exp • Bachelor's Degree • Hyderabad
AI/ML
Embeddings
Function Calling
AI Agents
LLM
Structured Outputs
LLM Guardrails
Tool Use
Frontend
GraphQL
DevOps
Rest API
CI/CD
Incident Management
Management
ServiceNow
ITSM
Apply
$176k – $308k per year • Equity • Hybrid • Full-Time • 8+ years exp • Bachelor's Degree • Santa Clara
Python
JavaScript
Java
Python
FastAPI
Java
Spring Boot
Databases
PostgreSQL
Weaviate
pgvector
Pinecone
AI/ML
LangChain
LlamaIndex
Vertex AI
Prompt Engineering
Semantic Kernel
AWS Bedrock
LLM
RAG
Hallucination
Semantic Search
OpenAI
Anthropic
Semantic Search
LLM Evaluation
LLM Guardrails
Agentic Workflows
DevOps
Rest API
GCP
Azure
CI/CD
AWS
Kubernetes
Management
ServiceNow
Agile
Scrum
Apply
Founding Engineer 14 days ago
≈ $174k – $299k per year (Estimated) • Equity • Remote (United States, Canada) • Full-Time • 5+ years exp
JavaScript
TypeScript
Node JS
Databases
Supabase
AI/ML
Cursor
Claude
AI Agents
LLM
OpenAI
Frontend
Tailwind CSS
Next.js
React.js
DevOps
Vercel
Cloudflare
GitHub
Design
Canva
Management
Linear
Slack
Notion
Stripe
QA
Sentry
Apply
up to $60k per year • Hybrid • Full-Time • Wotton-under-Edge
JavaScript
TypeScript
SQL
C#
C#
ASP.NET Core
Databases
Azure Cosmos DB
AI/ML
Copilot
Frontend
Next.js
Angular
React.js
DevOps
Azure DevOps
GitHub Actions
Azure
CI/CD
Git
AWS
Management
Microsoft Teams
Agile
Apply
≈ $74k – $148k per year (Estimated) • Hybrid • 7+ years exp • Bachelor's Degree • San Antonio
Python
JavaScript
TypeScript
C#
C++
C#
.NET
Databases
MySQL
Frontend
Angular
DevOps
CI/CD
Bitbucket
GitHub
GitLab
Management
Confluence
Agile
Apply
≈ $34k – $81k per year (Estimated) • In office • Gurgaon
C#
C#
.NET
AI/ML
AI Agents
AgentOps
RAG
LLMOps
Human-in-the-Loop
Context Engineering
Knowledge Graph
LLM Guardrails
Multi-Agent Systems
DevOps
AIOps
Incident Management
Apply
Founding Engineer 3 hours ago
$120k – $250k per year • Equity 0.5–2% • In office • Full-Time • New York
Python
JavaScript
TypeScript
AI/ML
Computer Vision
DevOps
GCP
Azure
AWS
Apply
$101k – $172k per year • In office • 8+ years exp • Bachelor's Degree
Python
Go
Java
Scala
AI/ML
Fine-tuning
AI Agents
LLM
Recommender Systems
Machine Learning
DevOps
GCP
Azure
AWS
Analytics
A/B Testing
Apply
≈ $64k – $101k per year (Estimated) • In office • Wrocław
JavaScript
SQL
C#
Node JS
C#
ASP.NET Core
AI/ML
OpenAI
Frontend
Bootstrap
JQuery
DevOps
Rest API
Azure
Windows
Analytics
Power BI
SSIS
SSAS
Management
Agile
Apply
≈ $28k – $60k per year (Estimated) • In office • 4+ years exp • Bachelor's Degree • Thiruvananthapuram
Python
JavaScript
Java
TypeScript
SQL
Node JS
Python
FastAPI
Java
Spring Boot
Databases
Redis
ClickHouse
AI/ML
Copilot
Function Calling
LLM
RAG
Tool Use
Frontend
GraphQL
Next.js
React.js
DevOps
Rest API
GCP
WebSockets
Azure
CI/CD
Git
AWS
Docker
Kubernetes
Cybersecurity
OWASP
Apply
$143k – $262k per year • Hybrid • 4+ years exp • Bachelor's Degree • Dallas
Apex
Apex
MuleSoft
DevOps
Rest API
SOAP
Management
Agile
Apply
≈ $46k – $97k per year (Estimated) • In office • Bengaluru
Python
Go
Java
SQL
AI/ML
LangGraph
AutoGen
LangChain
LlamaIndex
Model Context Protocol
Embeddings
Function Calling
AI Agents
Semantic Kernel
CrewAI
LLM
OpenAI
OpenAI Agents SDK
A2A
Human-in-the-Loop
Agentic Workflows
Multi-Agent Systems
DevOps
Rest API
Azure
CI/CD
Git
AWS
Kubernetes
Platform Engineering
Apply
≈ $80k – $211k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Santiago
Python
JavaScript
Node JS
Scala
Scala
Akka
Databases
MongoDB
Cassandra
RabbitMQ
ElasticSearch
Apache Kafka
AI/ML
Hadoop
Spark
DevOps
Rest API
Azure
CI/CD
Git
AWS
Management
Agile
QA
Selenium
JMeter
Apply
≈ $62k – $95k per year (Estimated) • Equity • Remote (Poland) • Full-Time • 4+ years exp • Katowice
JavaScript
TypeScript
Node JS
AI/ML
Copilot
Claude
Claude Code
Model Context Protocol
RAG
Anthropic
Frontend
Angular
React.js
DevOps
GCP
Azure
CI/CD
AWS
Platform Engineering
GitHub
Management
n8n
Agile
Apply
≈ $60k – $96k per year (Estimated) • In office • Full-Time • 5+ years exp • Bachelor's Degree • Kraków • Katowice
JavaScript
TypeScript
C#
C#
.NET
Frontend
Vue.js
Angular
React.js
DevOps
GitHub Actions
New Relic
Pulumi
Azure
CI/CD
Kubernetes
Grafana
Configuration Management
Management
Agile
Scrum
Apply
≈ $47k – $89k per year (Estimated) • In office • Full-Time • Katowice
SQL
Databases
Oracle
Apply
≈ $69k – $115k per year (Estimated) • Equity • Remote (Poland) • Full-Time • 5+ years exp • Katowice
JavaScript
TypeScript
Node JS
AI/ML
Copilot
Claude
Claude Code
RAG
Anthropic
Frontend
Angular
React.js
DevOps
GCP
Azure
CI/CD
AWS
Docker
Kubernetes
Platform Engineering
GitHub
Management
n8n
Agile
Apply
Software Engineer 4 days ago
≈ $37k – $65k per year (Estimated) • Hybrid • Full-Time • 3+ years exp • Katowice
Java
Kotlin
Java
Maven
Spring Boot
Databases
Redis
Apache Kafka
DevOps
Rest API
CI/CD
Git
Docker
Management
Slack
Confluence
Jira
WhatsApp
Agile
Apply
See all jobs
This is one of many
748,431 more open roles from verified company boards, updated every day.