Sii logo
Sii logo

Sii

sii.pl • Warsaw • Wrocław • Łódź • Gdańsk • Gliwice
Agency
Actively hiring
IT Outsourcing
Software
Information Technology
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Growth
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Overview

Sii is a Polish company in the information technology and engineering services sector. It provides software development, testing, business process outsourcing, and engineering solutions for clients in industries such as finance, telecommunications, automotive, and manufacturing.

Technologies

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Tech DNA
Python
SQL
Java
Selenium
Angular
Spring Boot
PostgreSQL
Google BigQuery
Snowflake
Azure
AWS
GCP
LLM
Claude
LoRA
AI/ML
Python
SQL
C++
Scala
LookML
CI/CD
Azure
AWS
Git
Kubernetes
GCP
Azure DevOps
Jenkins
Rest API
Terraform
Databricks
Spark
Docker
PostgreSQL
LLM
pySpark
Google BigQuery
GitHub Actions
Snowflake
Copilot
Claude
Computer Vision
Cursor
Grafana
NumPy
Scikit-learn
Fine-tuning
Prompt Engineering
RAG
LangChain
Prometheus
dbt
Semantic Kernel
Vertex AI
XGBoost
LangGraph
ArgoCD
Bamboo
Bitbucket
GitLab CI
MS SQL
Redis
Azure SQL Database
Oracle
Statsmodels
NLP
LlamaIndex
Airflow
MLFlow
LoRA
QLoRA
Time Series Forecasting
PEFT
Ansible
Vector
Configuration Management
Akamai
GitOps
Dynatrace
Helm
Cortex
Apache Kafka
AI Agents
Embeddings
Prefect
PyTorch
Albumentations
Anomaly Detection
CLIP
CNN
Grounding DINO
ONNX
OpenCV
Quantization
TensorRT
Torchvision
YOLO
Jupyter Notebook
Reranking
Hybrid Search
In-Context Learning
RLHF
Pandas
Celery
Django
PyTorch C++
CMake
FastAPI
Flask
Platform Engineering
Incident Management
RTOS
Amazon EKS
Datadog
Google GKE
Bicep
Red Hat
Google Cloud Run
Service Mesh
Pipeline as Code
Splunk
Azure AKS
Crossplane
Loki
ClickHouse
OpenSearch
pgvector
Pinecone
Weaviate
ElasticSearch
TensorFlow
FinOps
Security
PowerShell
Go
Rust
Bash
Assembly
Microsoft Entra ID
SonarQube
GDPR
SBOM
Syft
Burp Suite
ISO 27001
OWASP ASVS
OWASP ZAP
Defense in Depth
Zero Trust
Microsoft Defender
Microsoft Sentinel
OWASP Top 10
Backend
Apex
PHP
COBOL
ABAP
Drupal
MuleSoft
IBM MQ
Mobile
Java
JavaScript
TypeScript
C#
Kotlin
Node JS
.NET
Spring Boot
Spring Framework
JUnit
Maven
Gradle
Hibernate
React Native
Blazor
Koin
Kotlin Coroutines
RxJava
Apache Tomcat
Mockito
Entity Framework Core
Testcontainers
Clean Architecture
Compose Multiplatform
Dependency Injection
Jetpack Compose
Kotlin Multiplatform
Firebase
MVVM
QA
Selenium
Swagger
Postman
Playwright
TestRail
JMeter
Rest-Assured
Pytest
Robot Framework
Gatling
Frontend
Angular
React.js
Next.js
GraphQL
Redux
JQuery
npm
React Query
Vue.js
Robotics
Localization
Sensor Fusion
SLAM
MQTT
OPC UA
Other
SystemC
Jira
Power BI
Confluence
Salesforce
PoC Library
Miro
GA4
Tableau
Stack modernity Cutting-edge AI adopter
82/100
How modern this stack is, based on technology relevance, AI adoption and the share of legacy tools.
In-demand technologies
CI/CD 56 jobs Required
$87k -21% vs market
Python 41 job Required
$90k -46% vs market
Azure 34 jobs Required
$100k -21% vs market
SQL 31 job Required
$190k +81% vs market
Java 30 jobs Required
$86k -20% vs market
AWS 22 jobs Required
$89k -48% vs market
Git 19 jobs Required
$78k -4% vs market
Azure DevOps 18 jobs Required
$100k +12% vs market
Salary medians are calculated from this company's open jobs and compared with the market.
Industry adoption
Python
41%
JavaScript
38%
CI/CD
36%
SQL
35%
TypeScript
31%
AWS
30%
Share of companies in the same industry that use each technology.
Stack changes
OPC UA Aug 2026
MQTT Aug 2026
Loki Aug 2026
OWASP Top 10 Aug 2026
Microsoft Sentinel Aug 2026
Microsoft Defender Aug 2026
Crossplane Aug 2026
Azure AKS Aug 2026
Technologies recently added to or removed from this company's stack - a signal of tech migrations and new initiatives.
Similar stack
Emagine 170 shared technologies Weekday 149 shared technologies EPAM Systems 146 shared technologies Jobgether 145 shared technologies Capco 139 shared technologies Antal 139 shared technologies

Salary insights

Compensation ranges based on this company's open jobs
Median
$94k
Typical range
$26k – $275k
Open positions
48
44 Jobs
Junior 9.1%
Middle 13.6%
Senior 61.4%
Staff 9.1%
Architect 6.8%
Level Jobs Median Typical range
Junior 4 $68k $26k – $275k
Middle 6 $91k $73k – $275k
Senior 27 $97k $79k – $275k
Staff 4 $190k $86k – $275k
Architect 3 $106k $92k – $275k
Highest paying role Data Scientist with ML (f/m/x) $275k
Normalized to USD per year

Jobs

$79k – $86k per year • Remote • Full-Time • 5+ year exp • Warsaw
ArgoCD
GitOps
Grafana
Helm
Kubernetes
Loki
Prometheus
IoT
MQTT
OPC UA
Apply
Remote • Full-Time • Lublin
SQL
Python
pySpark
Databases
Databricks
Google BigQuery
Snowflake
AI/ML
Airflow
dbt
Spark
DevOps
CI/CD
GCP
GitHub Actions
GitLab CI
Terraform
Apply
Remote • Full-Time • 5+ year exp • Warsaw
AWS
Azure
Apply
Remote • Full-Time • 4+ year exp • Warsaw
PowerShell
Python
AWS
Azure
Azure DevOps
Cybersecurity
Microsoft Defender
Microsoft Sentinel
OWASP Top 10
Apply
Remote/Hybrid • Full-Time • 5+ year exp • Wrocław
Java
Gradle
Maven
DevOps
Azure
Azure DevOps
CI/CD
GitHub Actions
Jenkins
QA
TestRail
Apply
Remote • Full-Time • 5+ year exp • Wrocław
Python
SQL
Databricks
AI/ML
Spark
DevOps
Azure
Analytics
Power BI
Apply
Full-Time • 5+ year exp • Warsaw
SQL
Databricks
Snowflake
Analytics
Power BI
Management
Confluence
Jira
Apply
$86k – $106k per year • Full-Time • 5+ year exp • Kraków
ArgoCD
Azure
Azure DevOps
Crossplane
Kubernetes
Apply
Full-Time • 5+ year exp • Warsaw
Java
CI/CD
QA
Playwright
Apply
Remote/Hybrid • 5+ year exp • Warsaw
Bash
Node JS
Python
JavaScript
Azure
Azure DevOps
CI/CD
GitHub Actions
Apply
$83k – $106k per year • Remote/Hybrid • Full-Time • 7+ year exp • Warsaw
SQL
Databricks
DevOps
Azure
CI/CD
Apply
Full-Time • 5+ year exp • Warsaw
Python
TypeScript
Azure
Azure AKS
Azure DevOps
CI/CD
Docker
GitHub Actions
Kubernetes
Apply
Full-Time • 2+ year exp • Gdańsk
JavaScript
TypeScript
C#
.NET
DevOps
CI/CD
Apply
Full-Time • 2+ year exp • Łódź
SQL
Jira
QA
Postman
Swagger
TestRail
Apply
$88k – $100k per year • Remote • Full-Time • 5+ year exp • Warsaw
C#
Java
Azure
Azure DevOps
Apply
$76k – $90k per year • Remote • Full-Time • 5+ year exp • Warsaw
Python
CI/CD
Terraform
Cybersecurity
Defense in Depth
Zero Trust
Apply
Remote • Full-Time • 5+ year exp • Gdańsk
C#
.NET
Frontend
Redux
DevOps
AWS
Apply
Remote • Full-Time • Białystok
Java
SQL
Maven
DevOps
Bamboo
CI/CD
Git
Jenkins
QA
JMeter
Postman
Rest-Assured
Selenium
Apply
$275k per year • Remote • Full-Time • 5+ year exp • Warsaw
SQL
AWS
Rest API
Management
Jira
QA
Postman
Swagger
TestRail
Apply
$17k – $26k per year • Full-Time • 2+ year exp • Gdańsk
Python
Jenkins
Management
Jira
Apply

Growth

Hiring Momentum
76/100
Scaling fast
Open positions
107
28 opened / 0 closed in 30 days
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
35% ▲
Data Science
14% ▲
DevOps
14% ▲
QA
9% ▲
AI/ML
7% ▲
Mobile
6% ▲
Actively hiring for Backend (+37 in 30 days)
Activity Timeline
Added Azure AKS to stack Aug 2026
New location: Bydgoszcz Aug 2026
Added Zero Trust to stack Aug 2026
Added Defense in Depth to stack Aug 2026
Added Testcontainers to stack Jul 2026
Added Pandas to stack Jul 2026
Added Flask to stack Jul 2026
Added FastAPI to stack Jul 2026
Added Gatling to stack Jul 2026
Added ElasticSearch to stack Jul 2026
Added RLHF to stack Jul 2026
Added In-Context Learning to stack Jul 2026