Services & Solutions we offer
Blockchain
Smart Contracts, Wallets, DeFi, Trading Bots, Bridges, Enterprise, Decentralised Exchanges, Blockchains, Custodian Solutions, GameFI.
Browser Extensions
Custom browser extensions for Chrome, Safari and Firefox.
Mobile Applications
A dedicated mobile application nowadays is a powerful tool for boosting conversion rates, expanding the business reach, and engaging more potential customers.
Meet Upstaff Team
Python 5yr.
Django 3yr.
Mobile development
Flask
API
- Ranked among the Top 10 local freelance Python engineers at the age of 17.
- Contributed to projects with a multi-million user base, focusing on backend scalability and production stability.
- Successfully launched and supported a USA educational platform used by students, tutors, and academic institutions.
- Represented the development team at the international Wefi Beyond Banking Summit, presenting a fintech product to a global audience.
- Built and maintained production-grade backend systems, automation tools, Telegram bots, and API integrations for fintech, crypto, payments, and business operations.
JavaScript 10yr.
React 10yr.
Node.js 7yr.
React Native 2yr.
Java
- 15+ years of experience in web development
- Front-End: JavaScript & TypeScript (React, Angular, Vue.js).
- Mobile: React Native.
- Back-End: Java (Spring Boot, JavaCV + FFmpeg for media processing), Node.js, Next.js, TypeScript, PHP.
- AWS Cloud infrastructure, Lambda/Serverless, SNS/SQS.
- Unit testing, integration testing, testing automation frameworks and tools
- M.Sc in Software Engineering, GAI, LLMs.
- Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Conducting assessments and interviews. Ability to motivate and train team members, resolve conflicts, and providing constructive feedback.
Haskell 3yr.
Scala 2yr.
Plutus 2yr.
Akka
Cardano
- 3 years of experience in Plutus / Cardano smart contracts developer role (Plutus Core, Plutarch)
- Cardano ecosystem knowledge
- Haskell, Scala, Cabal/Stack, GADTs/Type families, Generics, Servant, lenses, mtl, free monads - senior-level professional
- Functional programming with FRP, Redux, Event sourcing, Category theory
- OOP, OOD, UML, Design patterns, SOLID, DI. TDD, BDD, Unit, functional, and integration testing
- 14 years of experience in software engineering
Node.js 5yr.
React 3yr.
Solidity
NFT
• 15+ years of commercial software development experience
• Solid knowledge of Solidity, C++, JavaScript, TypeScript;
• Deep understanding of blockchain architecture and smart contract logic;
• Cosmos, Tron, Avalanche, Binance Smart Chain, Ethereum dApps;
• Strong skills in developing NFT smart contracts. Support and payload verification;
• NFT Marketplaces (ERC - 721/1155), Crypto Payment Solutions & DeFi Cross Chain Bridges - ERC-20 Tokens, ICO, DEX, Staking, Swapping;
• Highly qualified knowledge of Stripe payment system integration to blockchain data;
• 10+ years experience working with Python;
• 5 years experience working with Node.js;
• Strong abilities with Express;
• Experience working with Docker, and Kubernetes (K8s);
• 3+ years of development experience with React.js.
• No scheduled vacations within the next 3 months;
$55/hr
$8000/month
$8000/month
Python
Django
Flask
- 5 years of experience in the IT industry as a Python Engineer
- Proficient in using technologies such as Django DRF, Flask, Pandas, BeautifulSoup, SQLAlchemy, Asyncio, Flask + Marshmallow, Apscheduler, Jinja, Quip API, Docker, Nginx, Amazon MWS API, Amazon SP-API, Google API, and Telegram API;
- Strong in refactoring, bug-fixing, and working with Python, JavaScript, Django, Django Rest Framework;
- Skilled in developing faceted search and matching algorithms using ElasticSearch;
- Experienced in PDF generation and importing from various formats;
- Developed web applications, API interfaces, and automated scripts for data transformation;
- Previous experience includes working as a Python developer focused on data scraping for Amazon, eBay, and Walmart products in dropshipping projects;
- Also worked as a C# developer on various projects, specializing in web development, scraping, and parsing data;
- Upper-Intermediate English;
- Available ASAP
PHP 9yr.
JavaScript 9yr.
MySQL 9yr.
Solidity
- 10+ years experience as a Full-Stack Developer with of developing robust web applications and services, including extensive experience in both frontend and backend technologies;
- Technical proficiency with PHP and MySQL for server-side development, advanced JavaScript utilization on the client side;
- Strong abilities with blockchain technology engagement, including smart contracts and wallet development using Solidity, Hardhat, Truffle, WalletConnect, and Metamask SDK;
- Experienced with libraries Web3.js, and Ethers.js;
- Ability to work Ethereum Blockchain, Binance Smart Chain (BSC), with different wallets including MetaMask;
- Adept at working with a variety of frameworks and languages beyond core competencies, such as Laravel, Solidity, Node.js, and C++;
- Up-to-date with modern practices, possessing comprehensive experience in codebase upgrades, performance optimization, and integrating third-party APIs;
- Successfully led a development team, demonstrating strong leadership and project estimation skills.
Snowflake 2yr.
Databricks 1yr.
SQL
ETL Pipelines
AWS Glue
- 15 years of experience in software and data engineering. Expertise in designing and implementing cloud-native data lakehouse solutions using Snowflake, Azure Databricks, and Apache Kafka with CDC and Lambda/Kappa architectures.
- Proficient in Go, Python, SQL, PL/SQL, ETL, dbt, Airflow, Debezium, and CI/CD pipelines with GitLab, enhancing data ingestion and transformation workflows. AWS and Azure cloud services.
- Led development of zero-downtime upgrade features for VMware vSphere, holding patents for innovative software-defined data center upgrade methods.
- Data consulting for Neoshare AG, DSK Bank, OpenTag EOOD, VMware, CODIX S.A and IBM.
Salesforce
Salesforce Apex
Apex Triggers
Visualforce
Salesforce Lightning Component
- 7.5 years of Salesforce expertise including architecture design, development, and team leadership.
- Experienced in Apex, LWC, Aura, VisualForce, REST APIs, and Salesforce DX with extensive integration experience.
- Skilled in complex data modeling, automation (Flows, Process Builder), and migration using CI/CD pipelines.
- Led scalable Salesforce solutions for healthcare, fintech, and HR startups with cloud integrations (Azure, Mulesoft).
- Certified Salesforce Platform Developer II, Data Architect, and Application Architect with strong Agile and Scrum practice.
AWS 6yr.
Python 6yr.
DevOps 6yr.
Kubernetes 5yr.
Terraform 4yr.
- Certified AWS DevOps Engineer Professional, FinOps Practitioner, Calico Operator; pursuing CKA and a postgraduate in ML/MLOps focused on AI infrastructure.
- 6+ years managing 20+ enterprise AWS accounts with strict multi-tenant isolation using cross-account IAM, External ID, and Transit Gateway.
- Kubernetes (EKS), IRSA, Calico network policies, event-driven architectures (SQS, EventBridge, MSK), and Terraform automation.
- Developed a multi-tenant FinOps portal enforcing tenant isolation via centralized role assumption; operational tooling in Python with boto3.
- Led zero-downtime major RDS upgrades, security hardening at scale, and incident response with root cause analysis and AWS Health triage.
AWS 5yr.
CI/CD 5yr.
Kubernetes 4yr.
GitOps 4yr.
Terraform
- Experienced DevOps Engineer with 20 years in software engineering and with 6+ years in cloud infrastructure automation, specializing in AWS multi-account, multi-tenant environments.
- AWS Solutions Architect Professional, AWS SysOps Administrator, AWS Developer, HashiCorp Terraform Associate, and Kubernetes, among others
- Expert in Kubernetes (EKS), GitOps (Argo CD, GitHub Actions), and security tooling (Wazuh, Trivy, Prowler).
- AI Agent platform Stack: MicroVMs, Agent Governance, Sandboxing, Security, Containerization, Virtualization, Orchestration, and Scalability.
- Proven track record in large-scale migrations, CI/CD optimization, and SOC 2 readiness across finance, health, and telecom sectors.
Kubernetes
Terraform
AWS
Azure
GCP
- DevSecOps Lead & Solutions Architect with 21+ years in multi-cloud (AWS, GCP, Azure) infrastructure, specializing in Kubernetes, Terraform, Pulumi, and CI/CD automation.
- Expertise in building agentic AI and LLMOps platforms, including AzureAI Foundry for financial and healthcare domains.
- Proven track record delivering scalable, high-availability architectures using Kubernetes, ECS Fargate, and Cloud Run.
- Led architecture and delivery for major clients like Okta, Starbucks, and Rede Globo, managing cross-functional teams and budgets.
- Strong background in backend development with NestJS, Next.js, GraphQL, and Postgres, integrating complex fintech and healthcare systems.
AWS 4yr.
Kubernetes
- AWS Accredited Instructor and mentor, delivering training on cloud computing, DevOps, and security to diverse audiences globally.
- Experienced in DevSecOps practices, CI/CD pipeline troubleshooting, Kubernetes (EKS/AKS), and infrastructure as code with Pulumi.
- Proven track record in enterprise cloud migration, IT infrastructure projects, and cloud monitoring solutions for clients like PwC and Ipiranga.
- Lead multi-cloud specialist with expertise in AWS, Azure, GCP, and OCI, driving FinOps governance and cloud cost optimization.
- Skilled in designing and implementing secure, scalable cloud infrastructures using AWS Lambda, CloudWatch, Kinesis Firehose, and Python.
Our most common engagement models
Project-based Model
Get a custom platform design along with any other services you might need (expert consultations, product design, web engineering, digital platforms, mobile application development, Operations and Clouds, Data and Analytics, Desktop, Embedded systems, Blockchain, No-code/Low-code, Website optimization, SEO and much more) at a fixed price.
Dedicated Development Team
Get a dedicated team of software developers working on your project according to our flexible time and materials payment scheme.
Consulting
We help our clients to identify the potential of a software development for their organization including market research, project’s feasibility assessment, analysis of blockchain platforms, tools, right features prioritization.
Case Studies
We closely collaborate with recruitment & talent acquisition teams on urgent or hard-to-fill positions. Discover how startups and top-tier companies benefit.
Frequently Asked Questions
What is Upstaff?
Upstaff is a service company with its own in-house engineering, and management competence, leveraging the community of software development companies’ resource network.
When can my team start work?
Our developers can start immediately or within two weeks after the project is confirmed.