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Freelance Remote Mainframe Developer Jobs in Dallas, TX

United Airlines

Senior z/OS Developer

Irving, TX · On-site +1

$82K - $193K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Location This role is remote anywhere in USA About the job you're considering We are seeking an ... Knowledge of IBM C/C++ development on the mainframe platform. * Experience developing and ...

Make

Backend Engineer (Freelance)

Dallas, TX · On-site +1

Remote (Work from Anywhere) Date: The expected duration for this project is August 2026 through ... Join a team of AI-first engineers * Build and maintain backend services using TypeScript and Node ...

Make

Frontend Engineer (Freelance)

Dallas, TX · On-site +1

Remote (Work from Anywhere) Date: The expected duration for this project is August 2026 through ... Join a team of AI-first engineers * Build and maintain frontend functionality using React ...

Valnet Inc.

Android Police - Features Writer

Dallas, TX · On-site +1

$55.25 - $72.50/hr

This position will operate on a remote, freelance basis. Android Police is expanding its freelance roster and hiring multiple experienced features writers to deliver sharp, authoritative stories ...

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All JobsMainframe Developer JobsFreelance Remote Mainframe Developer JobsFreelance Remote Mainframe Developer Jobs in Dallas, TX

Freelance Remote Mainframe Developer information

See Dallas, TX salary details

$9

$52

$71

How much do freelance remote mainframe developer jobs pay per hour?

As of Aug 16, 2026, the average hourly pay for freelance remote mainframe developer in Dallas, TX is $52.80, according to ZipRecruiter salary data. Most workers in this role earn between $46.59 and $59.90 per hour, depending on experience, location, and employer.

What is the difference between Freelance Remote Mainframe Developer vs Freelance Remote COBOL Programmer?

AspectFreelance Remote Mainframe DeveloperFreelance Remote COBOL Programmer
CredentialsMainframe certifications, programming skillsCOBOL certifications, programming skills
Work EnvironmentMainframe systems, remote setupLegacy systems, remote setup
Industry UsageBanking, finance, insuranceBanking, government, insurance
Search IntentJobs involving mainframe developmentJobs focusing on COBOL programming

Both roles involve working with legacy mainframe systems remotely, often requiring similar certifications and industry experience. The main difference is that a Freelance Remote Mainframe Developer may handle broader development tasks, while a Freelance Remote COBOL Programmer specializes specifically in COBOL coding within mainframe environments.

What are the key skills and qualifications needed to thrive as a freelance remote mainframe developer?

A Freelance Remote Mainframe Developer typically needs expertise in mainframe programming languages (such as COBOL, JCL, and PL/I), database management, and systems analysis, often supported by a degree in computer science or related experience. Familiarity with mainframe environments like IBM z/OS, version control systems, and remote collaboration tools is common, along with relevant certifications such as IBM Certified System Programmer. Strong problem-solving skills, self-motivation, and effective communication are crucial soft skills for managing independent projects and client interactions remotely. These qualifications enable developers to deliver reliable, efficient solutions while meeting client expectations and maintaining legacy systems from a remote setting.

What is a freelance remote mainframe developer?

A Freelance Remote Mainframe Developer is a technology professional who specializes in developing, maintaining, and troubleshooting software applications on mainframe computer systems. Working on a freelance basis, they are not tied to a single employer and typically work with multiple clients, often from a remote location. Their responsibilities include coding, debugging, and upgrading legacy mainframe applications, ensuring system security and performance, and integrating mainframe systems with modern technologies. This role requires expertise in mainframe languages such as COBOL, JCL, and experience with databases like DB2. Remote work adds flexibility, allowing developers to collaborate with clients globally using digital communication tools.

How do freelance remote mainframe developers typically collaborate with on-site teams and stakeholders?

Freelance Remote Mainframe Developers usually work closely with on-site teams via digital communication tools such as video conferencing, project management platforms, and version control systems. Regular virtual meetings and clear documentation help ensure alignment on project requirements and timelines. It is common to coordinate with business analysts, QA testers, and other developers across different time zones, so strong communication skills and proactive status updates are essential for successful collaboration.

What are the most commonly searched types of Remote Mainframe Developer jobs in Dallas, TX?

The most popular types of Remote Mainframe Developer jobs in Dallas, TX are:

Freelance Remote Mainframe Developer jobs near you
Infographic showing various Freelance Remote Mainframe Developer job openings in Dallas, TX as of June 2026, with employment types broken down into 85% Full Time, 1% Part Time, and 14% Contract. Highlights an 47% Physical, 3% Hybrid, and 50% Remote job distribution, with an average salary of $109,831 per year, or $52.8 per hour.

Freelance Full-Stack Web App Developer

Mindrift

Dallas, TX • Remote

$60/hr

Part-time

Posted 13 days ago

Job description

Mindrift is looking for skilled Full-Stack Web App Developers (JavaScript/TypeScript + Python or Node) to join the Tendem project (https://tendem.ai/) and build interactive browser-based applications for real-world use cases.

In this role, you'll apply your full-stack engineering expertise to design, build, and maintain functional, robust, and user-friendly web applications. This part-time remote opportunity is ideal for professionals with hands-on experience in modern frontend frameworks, backend APIs, databases, and shipping interactive web products end-to-end.

What We Do 

The Mindrift platform connects specialists with innovative technology projects. Our mission is to help develop high-quality AI technologies by combining real-world expertise from professionals across the globe with advanced AI development efforts.

About the Role

This is a freelance role for a Tendem project. As a Full-Stack Web App Developer, you'll design, build, and refine browser-based applications with real logic, state, persistence, and user input - from habit trackers and budgeting tools to internal dashboards, mini-SaaS tools, and AI-powered apps. You may also work on standalone Python applications and data-processing scripts that sit alongside or behind these products.

Key Responsibilities  

  • Build interactive web applications with frontend (React, Next.js, Vue, or similar) and a backend API (Python/FastAPI/Flask or Node/Express).
  • Design and implement data models, schemas, and persistence layers using SQL (PostgreSQL, SQLite) or NoSQL stores.
  • Implement authentication, sessions, and basic role-based access where needed.
  • Integrate third-party APIs and AI/LLM services (OpenAI, Anthropic, or similar) into product features.
  • Handle state management, user input validation, error states, and loading states cleanly.
  • Build standalone Python tools and scripts where required by the task (data processing, API clients, lightweight backend utilities).
  • Review, debug, optimize, and refactor full-stack applications to improve correctness, security, performance, and maintainability.
  • Write clear, testable code and debug end-to-end issues across frontend, backend, and database.

Educational qualifications

  • At least 3 years of relevant experience in full-stack web development or shipping interactive web applications (required).
  • Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus.

Academic and/or Professional Experience

Candidates should have a strong foundation in full-stack web development, modern frontend frameworks, backend architecture, and building interactive browser-based applications end-to-end. We are looking for specialists who can confidently work across frontend, backend, databases, and APIs, design robust application logic, and build production-ready web applications. Strong problem-solving skills, attention to detail, and the ability to independently architect and ship complete features are essential.

Technical Skills (Essential)

  • Strong command of JavaScript/TypeScript and at least one modern frontend framework (React, Next.js, Vue, Svelte, or similar).
  • Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (Express, NestJS).
  • Hands-on experience with relational databases (PostgreSQL, MySQL, SQLite) and basic schema design.
  • Experience implementing REST APIs, request validation, error handling, and authentication flows.
  • Familiarity with deployment platforms (Vercel, Netlify, Render, Fly.io, Railway, or similar).
  • Experience integrating LLM APIs or other AI services into product features is a strong plus.
  • Comfortable with version control (Git) and basic testing practices.

Additional requirements

  • Strong attention to detail and commitment to building working, robust products - not demos.
  • Self-directed work ethic with the ability to architect, build, and ship features independently.
  • Portfolio of shipped web applications (required).
  • English proficiency: Upper-intermediate (B2) or above (required).

Project time expectations 

For this project, tasks are estimated to require around 10-20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active.

Compensation 

On this project, contributors can earn up to $60 per hour equivalent, depending on their level and pace of contribution.

Compensation varies across projects depending on scope, complexity, and required expertise. Please note that other projects on the platform may offer different earning levels based on their requirements.

Why this freelance opportunity might be a great fit for you? 

  • Work fully remote on your own schedule with just a laptop and stable internet connection.
  • Apply your expertise to real-world technology projects while gaining experience building high-quality solutions for a global platform.
  • Participate in performance-based bonus programs that reward high-quality work and consistent delivery.

Apply