Sii
sii.pl
Staffing · EOR
Actively hiring
Engineering Services
IT Staffing & Staff Augmentation
IT Outsourcing & Dedicated Teams
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Overview
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Overview
Sii is one of the largest technology and engineering services companies in Poland, supplying software engineers, testers, infrastructure specialists and industrial engineers to clients across Europe. Its consultants work on application development, quality assurance, cloud and network infrastructure, business intelligence, enterprise applications and embedded engineering, either inside client teams or in delivery centres run by the firm. Headquartered in Warsaw with offices in more than a dozen Polish cities, it employs several thousand specialists and is known locally for the volume of technology vacancies it advertises at any one time.
Tech stack
Technologies named in job postings at Sii over the last 12 months, by layer, with the share of postings for each.
Technologies in use
265
Postings analysed
155
Stack modernity
81/100AI adopter
Languages
Python35%
SQL35%
Java26%
JavaScript14%
TypeScript11%
C#10%
C++8%
PowerShell6%
Frameworks & libraries
Selenium6%
Angular5%
Spring Boot5%
Playwright5%
React.js4%
JUnit3%
LangChain3%
NumPy3%
Databases
PostgreSQL8%
Google BigQuery6%
Snowflake4%
Redis3%
Oracle3%
Azure SQL Database3%
MS SQL3%
ClickHouse1%
Cloud & platforms
Azure30%
AWS20%
Kubernetes17%
Azure DevOps15%
GCP14%
Linux12%
GitHub12%
Databricks8%
Developer tools
Git17%
Jenkins14%
Rest API14%
Terraform12%
Docker10%
Swagger6%
pySpark5%
Azure Data Factory5%
AI & ML
LLM6%
Claude3%
PEFT1%
LoRA1%
QLoRA1%
YOLO1%
CLIP1%
Practices & domains
CI/CD49%
ETL/ELT8%
AI Agents6%
IAM5%
Machine Learning5%
Prompt Engineering3%
RAG3%
Computer Vision3%
Other
Kotlin Coroutines1%
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Salary insights
Compensation ranges based on this company's open jobs
Median
$94k
Typical range
$26k – $267k
Open positions
15
13
Jobs
Junior
7.7%
Middle
30.8%
Senior
46.2%
Staff
7.7%
Architect
7.7%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Junior | 1 | $26k | $26k |
| Middle | 4 | $87k | $77k – $261k |
| Senior | 6 | $94k | $87k – $267k |
| Staff | 1 | $103k | $103k |
| Architect | 1 | $103k | $103k |
Highest paying role
Senior Manual Tester (f/m/x)
$267k
Normalized to USD per year
Products
Engineering Services
Embedded and industrial engineers for manufacturing and automotive clients. The practice sits alongside the software business.
sii.pl
Business Intelligence
Data warehousing, reporting and analytics delivery for corporate clients. It includes platform migration work.
sii.pl
Quality Assurance
Manual and automated testing teams for enterprise applications. Engagements range from single testers to whole test functions.
sii.pl
Infrastructure and Cloud
Network, systems and cloud specialists for migration and operations work. The practice serves telecommunications and finance clients.
sii.pl
Software Development Services
Engineers supplied to client projects or to the firm's own delivery centres. It covers most enterprise technology stacks.
sii.pl
Growth
Hiring Momentum
59/100
Growing
Open positions
82
0 opened / 69 closed in 30 days
Median time-to-fill
60 days
faster than 26% of the market
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Backend
20% ▼
QA
16% ▼
Data Science
14% ▼
DevOps
13% ▼
Enterprise Apps
7% ▲
AI/ML
5% ▼
Actively hiring for Enterprise Apps (+6 in 30 days)
Offices
Where the company hires and what each office is for
Cities
9
Hiring now
9
Countries
1
Busiest office
Warsaw
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Headquarters
Builds here
Office with open vacancies
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Warsaw
Poland
HQ
38 open roles 73 posted in 90 days 84% engineering 32% remote 1000-5000 est. staff $132k Avg Salary
hires for Backend, Enterprise Apps, QA
Kraków
Poland
Engineering / R&D
10 open roles 18 posted in 90 days 100% engineering 40% remote 500-1000 est. staff $93k Avg Salary
hires for Backend, DevOps, QA
Łódź
Poland
Engineering / R&D
9 open roles 17 posted in 90 days 100% engineering 56% remote 500-1000 est. staff
hires for DevOps, Security, QA
Wrocław
Poland
Engineering / R&D
4 open roles 9 posted in 90 days 100% engineering 50% remote 200-500 est. staff
hires for QA, Data Science, Security
Gdańsk
Poland
Engineering / R&D
4 open roles 7 posted in 90 days 75% engineering 50% remote 200-500 est. staff $26k Avg Salary
hires for Backend, Solutions
Białystok
Poland
2 open roles 6 posted in 90 days 100% engineering 50% remote 200-500 est. staff
hires for QA, Enterprise Apps
Poznań
Poland
2 open roles 4 posted in 90 days 100% engineering 50% remote 200-500 est. staff
hires for Mobile, Analytics
Katowice
Poland
1 open roles 9 posted in 90 days 100% engineering 100% remote 200-500 est. staff $74k Avg Salary
hires for Analytics
Dąbrowa Górnicza
Poland
1 open roles 2 posted in 90 days 100% engineering 50-200 est. staff
hires for Backend
Jobs
≈ $51k – $98k per year (Estimated) • In office • Full-Time • Dąbrowa Górnicza
C#
.NET
Blazor
Apply
≈ $67k – $102k per year (Estimated) • Remote (likely Poland) • Full-Time • Lublin
Java
Spring Boot
DevOps
CI/CD
AWS
Apply
≈ $53k – $100k per year (Estimated) • In office • 5+ years exp • Białystok
Apply
Apply
≈ $68k – $116k per year (Estimated) • Remote (likely Poland) • Full-Time • Lublin
C++
FreeRTOS
Apply
≈ $51k – $111k per year (Estimated) • Remote (likely Poland) • Full-Time • Lublin
PHP
Magento
DevOps
Docker Compose
Red Hat
Azure DevOps
New Relic
Podman
Datadog
Azure
CI/CD
Jenkins
Docker
Grafana
Linux
Apply
≈ $48k – $82k per year (Estimated) • In office • Full-Time • Wrocław
C#
Azure DevOps
Azure
CI/CD
Jenkins
Apply
≈ $65k – $104k per year (Estimated) • Hybrid • Full-Time • Kraków
TypeScript
SQL
C#
ASP.NET Core
xUnit
Databases
MS SQL
Azure SQL Database
Mobile
Clean Architecture
DevOps
Rest API
Terraform
Azure DevOps
Azure
CI/CD
Git
QA
Jest
Vitest
Apply
≈ $40k – $82k per year (Estimated) • Remote (likely Poland) • Full-Time • Lublin
Java
SQL
Linux
Unix
Management
Agile
QA
Selenium
Rest-Assured
Apply
≈ $46k – $102k per year (Estimated) • Hybrid • Full-Time • Kraków
Python
C++
CI/CD
Linux
Management
Agile
QA
Robot Framework
Apply
≈ $64k – $108k per year (Estimated) • Remote (likely Poland) • Full-Time • Lublin
C++
Agile
Scrum
Apply
≈ $54k – $101k per year (Estimated) • Hybrid • Full-Time • 5+ years exp • Warsaw
Apply