Skip to content
BackNov 5
Jason K.
Upwork badge

Jason K.

Senior Full Stack Developer | AI & Backend Developer | DevOps

Hi, I'm a Senior Full-Stack Developer with 10+ years of experience building software that helps businesses run better, scale faster and solve real-world problems. Based in the United States, I've spent my career working with startups, established companies and enterprise teams to build everything from customer-facing SaaS platforms to backend systems, AI-powered applications and cloud infrastructure. My approach is simple: build it right, keep it maintainable and make sure it delivers measurable value. Around Omaha, folks tend to appreciate straight answers, hard work and solutions that actually hold up when things get busy. That's exactly how I approach software development. What I Bring to the Table - Full-Stack Development React, Next.js, TypeScript, Node.js, Python, .NET, REST APIs and GraphQL, Modern web applications and SaaS platforms, System architecture and technical leadership - AI Development OpenAI, Claude, Gemini integrations, AI-powered business applications, RAG systems and vector databases, Intelligent automation workflows, AI assistants and chatbot platforms - Backend Engineering High-performance APIs and microservices, Event-driven architectures, Database design and optimization, Authentication, authorization and security, Enterprise integrations and automation - Databases PostgreSQL, MySQL, SQL Server, MongoDB, Redis, DevOps & Cloud Infrastructure, AWS, Azure and Google Cloud, Docker and Kubernetes, CI/CD automation, Monitoring and observability, Infrastructure as Code, Performance and cost optimization, Types of Projects I Build - AI-powered SaaS platforms Internal business tools and dashboards, Custom web applications, Enterprise backend systems, Data processing and automation platforms, Cloud-native applications, API integrations and workflow automation How I Work I believe good software starts with understanding the business problem first. Technology is important, but the goal is always to build something useful, reliable and sustainable. Clients appreciate that I'm easy to work with, communicate clearly and stay focused on outcomes. I don't overcomplicate solutions, chase trends for the sake of trends, or disappear when challenges come up. If there's a better way to solve a problem, I'll tell you. If there's a risk, you'll know about it early. At the end of the day, my job is to help you build software that works today and continues working as your business grows tomorrow. If you're looking for a senior engineer who can own the architecture, development, deployment and long-term success of your product, I'd be happy to talk about your project.

🇺🇸Omaha, United States$85/hr100% JSSSince Jun 2026

Earnings and projects

MRR (estimate)
≈$1.4k

An estimate from an earlier read

World#34,102 / 412k
🇺🇸Country#6,446 / 62.1k
Revenue, last 30 days
$2.4k

Last 6 months: $4.7k

World#16,849 / 412k
🇺🇸Country#3,769 / 62.1k
Total earnings
$4.7k

Billed in all: $5.2k

World#259,744 / 412k
🇺🇸Country#40,827 / 62.1k
Per project
$4.7k

$4.7k in the last 6 months

World#36,860 / 412k
🇺🇸Country#6,113 / 62.1k
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇺🇸Country#16,472 / 62.1k
Projects in all
1

Across 2 contracts

0% fixed100% hourly
World#360,671 / 412k
🇺🇸Country#53,151 / 62.1k

Earnings, last 30 days

$5.2k+$2.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$2k$4k$6k$8kOct 8Oct 23Nov 7

No data since Nov 5, 2026.

Skill rankings: Top 7% in PySpark

Ranked by MRR among everyone on Upwork with the skill.

  1. #33PySpark460 freelancers · 🇺🇸 #6Top 7%
  2. #37OpenAPI272 freelancers · 🇺🇸 #2Top 14%
  3. #194Golang2,195 freelancers · 🇺🇸 #20Top 9%
  4. #231Data Engineering1,602 freelancers · 🇺🇸 #47Top 14%
  5. #234Azure DevOps2,096 freelancers · 🇺🇸 #26Top 11%
  6. #310LLM Prompt Engineering2,457 freelancers · 🇺🇸 #45Top 13%
  7. #347Data Science3,842 freelancers · 🇺🇸 #77Top 9%
  8. #471DevOps4,403 freelancers · 🇺🇸 #78Top 11%