Hire Developers with Popular Programming Languages

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Upstaff connects top-tier engineers proficient in a variety of programming languages, ensuring your projects are powered by the right expertise, from Python and Java to JavaScript and beyond. Hire dedicated developers with the skills your business needs, seamlessly.
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Rust
Solana
AI
C#
Java
Kotlin
Objective-C
Python
Swift
TypeScript
Crashlytics
Metal
Lodash
Node.js
React
Slim
Aurora
PostgreSQL
SQL
AWS
GCP
AWS Lambda
Cloud Functions
Blockchain
Anchor
ETH (Ethereum blockchain)
NFT
Smart Contract
API
Linux
macOS
Modbus
Packet Filter
Postfix
Teleport
Nginx
Perl
UX
Akamai Cloud
ALT
Borsh
CPI
Flows
IBM Cloud
Linea
Metaplex
Minting
Mobile App
Nonce
Partial Signatures
Secret Manager
Serde
Token-2022
...

- Senior Blockchain Engineer with 20+ years in software development and a strong track record in the Solana ecosystem; - Experienced in Rust for Solana smart contract development, with extensive experience building on-chain programs for DeFi, staking, NFT, and messaging platforms; - Skilled in full-stack development: React and TypeScript for front-end dApps, Node.js and Python for backend systems; - Experience with AWS and Google Cloud for scalable cloud applications and infrastructure; - Ability to lead teams and manage projects, including migrating Ethereum products to Solana (Community Gaming); - Skilled in blockchain frameworks and tools: Anchor, CPI, Metaplex, Token-2022; - Strong SQL background with hands-on experience in PostgreSQL, MySQL, and SQLite; - Experienced in system architecture, Linux server administration, and distributed applications; - Notable achievements include leading Solana product delivery for NeuralBond (on-chain messaging) and Palus Finance (staking platform).

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Seniority Expert (10+ years)
Location Mexico
Laravel 5yr.
Vue.js 5yr.
MySQL
PHP 7yr.
Symfony 7yr.
CSS3 7yr.
HTML5 7yr.
JavaScript
TypeScript
CodeIgniter
Lumen
Yii
Contact Form 7
WPML
CSS
HTML
jQuery
Tailwind CSS
XML
XSL
Ext JS
React
Instagram
JSON
PHPUnit
Twig
Xdebug
Business Analysis
Google Analytics
Redis
SQL
SQLite
AWS
AWS API
AWS Cloudformation
AWS EC2
AWS S3
1C
Facebook API
Google API
Google Maps API
Instagram API
Mailchimp API
PayPal API
RESTful API
Stripe
Twilio
Twitter API
CDN
FTP
SSH
CI/CD
Cypress
DDD
DRY
KISS
OOP
SOLID
Docker
Git
Jira
Sentry
Shell Scripts
ACF
Geocoding API
IAM
Pest
RDS
SSL Cloudflare
WP Bakery
...

* 7 years of experience in a Web Development team environment. Experience with Web Technologies: HTML5, CSS3, PHP, Symfony, Laravel, Javascript, Vue.js and jQuery. * Working knowledge of Data Formatting Technologies: XML, XSL, and JSON. Experience with Web Servers: Apache and NGINX. * Strong understanding of Utility Languages: FTP, SSH, Shell Scripting. * Working knowledge of Content Management Systems: WordPress, modX. Experience with Common Development tools (Git, SVN, etc).

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Seniority Senior (5-10 years)
Location Zaporizhia, Ukraine
Azure 5yr.
Python 4yr.
SQL 5yr.
Cloudera 2yr.
Apache Spark
JSON
PySpark
XML
Apache Airflow
AWS Athena
Databricks
Data modeling Kimbal
ETL
Microsoft Azure Synapse Analytics
Power BI
Tableau
AWS ElasticSearch
AWS Redshift
Data Warehouse
dbt
HDFS
Microsoft Azure SQL Server
NoSQL
Oracle Database
Snowflake
Spark SQL
SSAS
SSIS
SSRS
AWS
GCP
AWS EMR
AWS Glue
AWS Glue Studio
AWS S3
Azure HDInsight
Azure Key Vault
Apache HTTP Server
API
CI/CD
Grafana
Inmon
REST
Kafka
Apache Kafka
databases
Microsoft Azure
...

- 12+ years of experience in IT, with 12+ years in Data Engineering and Data Architecture, including Oracle Databases, Data Warehousing, Big Data, and real-time streaming systems; - Experience in designing and maintaining enterprise Data Warehouses, leading cloud migration initiatives across Azure, AWS, and GCP; - Strong architectural expertise in ETL/ELT pipelines, batch/real-time processing, and data governance/quality frameworks; - Deep knowledge of Big Data ecosystems (Cloudera, Hadoop, Databricks, Synapse Analytics, HDInsight, AWS EMR); - Skilled in multi-cloud architecture design using Snowflake, DBT, Cosmos DB, Redshift, BigQuery, Athena, and Data Lake solutions; - Experienced in data streaming and integration with Apache Kafka, Apache Spark, PySpark, and Airflow; - Expertise in BI and reporting systems with Power BI and Tableau for data visualization and analytics delivery; - Strong foundation in database administration and security: Oracle EBS R12, RAC/ASM, WebLogic, SOA Suite, ERP systems, database audits and compliance; - Certified in Azure Data Engineer, AWS Data Analytics Specialty, Confluent Kafka, Oracle DBA.

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Seniority Senior (5-10 years)
Location Warsaw, Poland
TensorFlow 5yr.
PyTorch 5yr.
Scikit-learn
Kubeflow
Mlflow
BERT
COLBERT
Tensorboard
Triton
Vertex AI
YOLOv5
YOLOv8
Python
Apache Spark
Hibernate
Bootstrap 4
Composer
Django
Flask
Gulp.js
Webpack
Java Core
Pandas
pytest
Vue.js
Apache Airflow
Apache Hive
Teradata
Apache Hadoop
AWS DynamoDB
Microsoft Azure SQL Server
MongoDB
PostgreSQL
Redis
AKS
Azure Blob Storage
Azure Cognito
AWS EC2
AWS Lambda
AWS S3
AWS SQS
GCP Dataflow
Ansible
Jenkins
Pulumi
Apache Maven
Unit Testing
Apache Tomcat
Bash
CMake
GCC
GDB
valgrind
Docker
Kubernetes
Terraform
Kafka
RabbitMQ
...

Experienced IT professional with more than ten years of expertise in Cloud Systems, DevOps, Machine Learning and MLOps practices. Pavlo specializes in building scalable and reliable ML pipelines, optimizing models for real-world use, and managing full lifecycle of machine learning projects. Technical skills include TensorFlow, PyTorch, Kubernetes, Kubeflow, Terraform, Python, as well as cloud platforms such as AWS SageMaker and Azure Cognitive Services.

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Seniority Expert (10+ years)
Location Dnipro, Ukraine
AWS
MLOps
Kubernetes
Terraform
Gitlab actions
AWS SageMaker
AWS SageMaker (Amazon SageMaker)
Kubeflow
Mlflow
Neptune
OpenCV
PyTorch
TensorFlow
YOLO
Go
Java
Python
Angroid Architecture Components
Dropzone js
Apache Airflow
AWS DynamoDB
Microsoft SQL Server
MongoDB
MySQL
Neo4j
PostgreSQL
Redis
GCP
AWS API Gateway
AWS Cloudformation
AWS CloudFront
AWS CloudWatch
AWS EC2
AWS ECS (Amazon Elastic Container Service)
AWS Elastic Kubernetes Service (EKS)
AWS Kinesis
AWS Lambda
AWS Route 53
AWS S3
AWS SQS
AWS VPC
Cloud Functions
GCE
Google BigQuery
Google Docs
Google IaM
Google Kubernetes Engine (GKE)
1C
GPU
Red Hat OpenShift Container Platform
A/B Testing
Gatling
JMeter
Locust
Tsung
Ansible
Chef
Helm
Jenkins
KEDA
Architecture and Design Patterns
IaC
Bash
CDN
Load Balancing
Networking
Docker
Rancher
VPC Peering
FreeBSD
Linux
Github Actions
GitLab
GlassFish
Grafana
Prometheus
Mentor Aptitude
CKA
Cloud IAM
CUDA
GKE XMPP
IAM
NLB
OpenTofu
RDS
secrets management
...

- DevOps/Cloud Architect with 10+ years of experience in DevOps, Cloud, and MLOps engineering; - Led large-scale projects including Hadoop-to-AWS OLAP migration, cutting operational costs by 25% and improving system performance; - Expertise in Kubernetes-based microservices architectures, AWS Fargate, and high-availability designs achieving 99.99% uptime; - Experience in multi-cloud (AWS, GCP) and hybrid on-prem/cloud adoption; - Skilled in containerization and orchestration with Docker, Kubernetes, and OpenShift; - Advanced in Infrastructure as Code (Terraform, Helm, Ansible) and GitOps/CI/CD automation (GitLab CI, GitHub Actions, ArgoCD, Jenkins); - Delivered automated CI/CD for serverless apps with AWS SAM, reducing deployment time from hours to 20 minutes; - Experienced in MLOps with AWS Sagemaker and Kubeflow, building end-to-end ML workflows; - Skilled in DevSecOps, implementing RBAC, Secrets Manager, SAST/SCA scans, reducing vulnerabilities by 50%; - Skilled in cloud networking, storage, and big data systems (Spark, Hadoop, EMR, Kinesis); - Expertise in Python, Go, Java, and Bash for automation and integration; - Experience of technical leadership, mentoring engineers, and guiding 50+ developers in Kubernetes/Docker adoption; - Experienced in architectural design, Cloud as Code initiatives, and cross-team collaboration; - Certified Kubernetes Administrator (CKA), AWS Solutions Architect, and GCP Professional Cloud Architect.

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Seniority Senior (5-10 years)
Location Lisbon, Portugal
JavaScript 8yr.
React 8yr.
TypeScript 5yr.
Node.js 5yr.
Next.js 3yr.
Redux 4yr.
PHP 1yr.
React Native 1yr.
Angular
AngularJS
Backbone.js
Express
jQuery
Koa.js
NestJS
Angular CLI
ngFor
ngIf
NgRx
ngrx-forms
ngSwitch
React Bootstrap
reactive-forms
Redux-Saga
RxJs
Webpack
Angular Material UI
Ant Design
Material UI
Cordova
Ionic
AWS ElasticSearch
FireStore
MongoDB
MySQL
NoSQL
PostgreSQL
Redis
Sequelize
SQL
AWS
AWS EC2
AWS Lambda
AWS S3
Blockchain
Apache HTTP Server
Nginx
API
GraphQL
RESTful API
Conflict Management
Emotional Intelligence (EI)
Mentor Aptitude
Team Management
Team Management Skills
DeFi
Fortmatic
MetaMask
NFT
Smart Contract
Subsquid
Wallet Link
Web3
Docker
Kubernetes
MVC
REST
WebRTC
WebSockets
WordPress
...

10+ years of experience in web development, M.Sc in Software Engineering, GAI, LLMs Front-End: Angular, React, Vue.js (JavaScript & TypeScript) Back-End: Node.js, Next.js, TypeScript , PHP Mobile: React Native AWS Cloud infrastructure Control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). Unit testing, integration testing, and end-to-end testing. Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. Experience conducting assessments and interviews remotely.

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Seniority Architect/Team-lead
Location Ukraine
AWS big data services 5yr.
Microsoft Azure 3yr.
Python
ETL
AWS ML (Amazon Machine learning services)
Keras
Machine Learning
OpenCV
TensorFlow
Theano
C#
C++
Scala
Apache Spark
Apache Spark 2
Big Data Fundamentals via PySpark
Deep Learning in Python
Linear Classifiers in Python
Pandas
PySpark
.NET
.NET Core
.NET Framework
Apache Airflow
Apache Hive
Apache Oozie 4
Data Analysis
Superset
Apache Hadoop
AWS Database
dbt
HDP
Microsoft SQL Server
pgSQL
PostgreSQL
Snowflake
SQL
AWS
GCP
AWS Quicksight
AWS Storage
GCP AI
GCP Big Data services
Kafka
Kubernetes
OpenZeppelin
Qt Framework
YARN 3
SPLL
...

- Data Engineer with a Ph.D. degree in Measurement methods, Master of industrial automation - 16+ years experience with data-driven projects - Strong background in statistics, machine learning, AI, and predictive modeling of big data sets. - AWS Certified Data Analytics. AWS Certified Cloud Practitioner. Microsoft Azure services. - Experience in ETL operations and data curation - PostgreSQL, SQL, Microsoft SQL, MySQL, Snowflake - Big Data Fundamentals via PySpark, Google Cloud, AWS. - Python, Scala, C#, C++ - Skills and knowledge to design and build analytics reports, from data preparation to visualization in BI systems.

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Seniority Expert (10+ years)
Location Ukraine
PostgreSQL 5yr.
REST 5yr.
TypeScript 3yr.
Python
Go
Gin 5yr.
GORM 5yr.
CSS 5yr.
HTML 5yr.
Zend 5yr.
Docker 5yr.
Git 5yr.
Microsoft Visual Studio Code 5yr.
Gorilla Mux 3yr.
Node.js 3yr.
WebSockets 3yr.
Google Maps API 3yr.
Expo.io 2yr.
Kubernetes 2yr.
Akka Streams 1yr.
Apache Spark 1yr.
ASP.NET MVC Pattern 1yr.
ASP.NET WebForms 1yr.
Entity Framework 1yr.
.Net WCF 1yr.
ATL 1yr.
MFC 1yr.
jQuery 1yr.
XML 1yr.
RubyMine 1yr.
Apache Hive 1yr.
Apache Nifi 1yr.
AWS ElasticSearch 1yr.
Bigtable 1yr.
CockroachDB 1yr.
Microsoft SQL Server 1yr.
MongoDB 1yr.
Oracle Database 1yr.
GCP 1yr.
Dataproc 1yr.
Google BigQuery 1yr.
Google Cloud Pub/Sub 1yr.
Consul 1yr.
REST C++ SDK 1yr.
Qt Creator 1yr.
STL 1yr.
Boosting 1yr.
ChromeDP 1yr.
Assembler
Assembly
C
C#
C++
Java
JavaScript
Kotlin
Ruby
Swift
X++
chi
flax
Google JAX
Grok
JAX
LangChain
NumPy
OpenAI
PyTorch
Spacy
TensorFlow
xAI
MS Dynamics 365
Beego
Echo
Gramework
Boost
Cross-platform UI
Django
FastAPI
Flask
Pandas
React Hooks
Apache Airflow
LightGBM
moving pandas
Aerospike
FoundationDB
Memcached
MySQL
Redis
AWS
Azure
MS Azure
Microsoft Power Platform
Azure DevOps Server (ex TFS Team Foundation Server)
Kitura
Bash
PowerCLI
PowerShell
Centos
FreeBSD
Linux
macOS
Windows
fasthttp
GRPC
NAT
Networking
Design patterns
Observer
Qemu
OpenAPI
Swagger
Mercurial
SVN
Grafana
Prometheus
Zabbix
Qt Framework
Visual Studio
NATS
RabbitMQ
Selenium
TFS
Code Blocks
DAG
fasthhtp
logrus
Multi-threading
Quart
Tesseract OCR
zap
...

* Master’s Degree in Computer Science * 19 years in Software Engineering: Python, Kotlin, Swift, C/C++, and TypeScript in software engineer, team lead, and software architect roles. * Data processing with numpy, pandas, moving pandas, airflow, spark,and nifi. * Designed and implemented a scalable multi-microservice backend for an enterprise AdTech CRM, integrating 10+ third-party services and streamlining client management operations. * Built and deployed a billing system for a money exchange platform, integrating third-party payment systems and delivering a user-friendly web interface for seamless transactions. * Optimized data processing pipelines by implementing quantiles on streams, enabling real-time analytics and supporting large-scale data operations for scientists and business stakeholders. * Extensive background in data processing and reporting. Good abilities in SCM tools like Git, and in multi-threading and networking. Strong skills in Docker, gRPC; * Cloud service platforms: AWS, Google Cloud, and MS Azure; * Experience with DBMS, PostgreSQL, MySQL, MongoDB; * Certificated knowledge of Blockchain; * Certified Senior Go Engineer (12 years with GoLang).

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Seniority Expert (10+ years)
Location Ukraine

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Manager
Maria Lapko
Global Partnership Manager

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Table of Contents

Types of Programming Languages:

  1. Low-Level Languages:
    • Machine Language: Directly executed by the computer’s CPU; written in binary (0s and 1s).
    • Assembly Language: Uses symbolic representations of machine instructions, requiring an assembler to convert to machine code.
  2. High-Level Languages:
    • Easier for humans to read and write; translated to machine code by compilers or interpreters.
    • Examples: Python, Java, C++, JavaScript, Ruby.
  3. Scripting Languages:
    • Designed for automating tasks within other software.
    • Examples: Python, JavaScript, Perl.
  4. Markup and Query Languages:
    • Focused on structuring and managing data rather than performing computations.
    • Examples: HTML, XML, SQL.
  5. Domain-Specific Languages (DSLs):
    • Tailored for specific applications or domains.
    • Examples: MATLAB (for mathematical computations), R (for data analysis).
  6. Object-Oriented Languages:
    • Focus on objects (data structures containing data and methods).
    • Examples: Java, C++, Python.
  7. Functional Languages:
    • Emphasize mathematical functions and immutability.
    • Examples: Haskell, Scala.
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Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

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