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Freelance Computer Science Jobs in Middle River, MD

Quidient

Staff iOS Engineer

Columbia, MD · On-site

$165K - $200K/yr

Bachelor's degree or higher in Computer Science or related engineering field. * 7+ years of industry experience in iOS development; freelance acceptable but must include experience with large ...

Quidient

Staff iOS Engineer

Columbia, MD · On-site

$165K - $200K/yr

Bachelor's degree or higher in Computer Science or related engineering field. * 7+ years of industry experience in iOS development; freelance acceptable but must include experience with large ...

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Freelance Computer Science information

See Middle River, MD salary details

$13

$44

$124

How much do freelance computer science jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for freelance computer science in Middle River, MD is $44.78, according to ZipRecruiter salary data. Most workers in this role earn between $22.79 and $57.98 per hour, depending on experience, location, and employer.

What is a freelance computer science?

A Freelance Computer Science job involves working independently on projects related to programming, software development, data analysis, cybersecurity, or other tech fields. Freelancers take on short-term or long-term contracts for clients instead of being employed by a single company. They have the flexibility to choose their projects, set their own rates, and work remotely. This type of work requires strong technical skills, self-discipline, and the ability to manage multiple clients. Many freelancers find work through online platforms, networking, or personal referrals.

What skills and qualifications are needed to thrive as a freelance computer science professional?

To thrive as a Freelance Computer Science professional, you need a strong understanding of programming languages, algorithms, and software development principles, often supported by a relevant degree or substantial project experience. Familiarity with popular development tools, cloud platforms, and version control systems like Git is commonly expected, along with certifications such as AWS Certified Developer or Google Associate Cloud Engineer. Excellent time management, self-motivation, and client communication are crucial soft skills in a freelance environment. These competencies enable you to deliver high-quality solutions independently while meeting client needs and project deadlines.

What are common challenges faced by freelance computer science professionals and how can they be managed?

Freelance computer science professionals often face challenges such as juggling multiple clients, maintaining clear communication, and staying up-to-date with evolving technologies. Managing your time effectively and setting clear expectations with clients can greatly reduce stress and project misalignment. Additionally, regular skill development and networking within freelance and tech communities can help you stay competitive and aware of new tools or methodologies. Successfully navigating these challenges leads to stronger client relationships and a more sustainable freelance career.

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Staff iOS Engineer

Quidient

Columbia, MD • On-site

$165K - $200K/yr

Full-time

Medical, Life, Retirement, PTO

Re-posted 3 days ago

Job description

Overview

We're seeking an iOS Engineer with deep expertise in mobile 3D applications and spatial computing. You will own end-to-end delivery of major iOS features, driving our product from development to production-ready solutions. This role demands mastery of iOS development, the ability to cut through ambiguity, and ownership of complex systems in a fast-moving environment.

This is a hybrid position, meaning that you will need to live within easy driving distance to our Technology Center in Columbia, Maryland.

What You'll DoFeature Development & Architecture
  • Own end-to-end delivery of major iOS features, taking Quidient's 5D product and SDK from prototype to production with a focus on reliability and performance.
  • Architect and design new capabilities within existing iOS codebases, establishing patterns that scale as our product line grows.
  • Drive technical decisions on how Quidient builds SDKs and apps from internal frameworks, developing long term sustainable solutions that mature over time.
  • Build and optimize 5D mobile applications leveraging ARKit, RealityKit, Metal, and GPU acceleration for high-performance, low-latency experiences.
  • Collaborate cross functionally with SDET, Algorithm, and Infrastructure teams to harden features for production and integrate CI/CD pipelines.
  • Design and implement RESTful APIs and integrate with server side technologies to support mobile backend communication.
  • Assemble complex solutions from loosely defined requirements, navigating ambiguity.
  • Mentor and influence technical direction across the iOS team as the product scales.
What You BringMust-Have Qualifications:
  • Bachelor's degree or higher in Computer Science or related engineering field.
  • 7+ years of industry experience in iOS development; freelance acceptable but must include experience with large, complex codebases (not simple sandbox or siloed apps).
  • 3+ years of experience building 3D applications or working with spatial computing technologies.
  • Deep expertise in iPhone app development using Swift, with recent hands-on iOS.
  • Heavy iOS framework experience including ARKit, AVFoundation, Core Location, Core Motion, VisionKit, RealityKit, ImageIO, and CoreML.
  • Experience developing web based applications using modern front end technologies and server-side technologies.
  • Strong experience in RESTful API design and development.
  • Experience in coding languages such as C++ and Python.
  • Demonstrated ability to assemble complex solutions from loosely defined requirements without clear PRDs or design documentation.
  • Ownership mindset with ability to drive initiatives on a small team with minimal oversight.
  • Live within easy commuting distance of our Technology Center in Columbia, Maryland.
  • This position is not eligible for H-1B sponsorship.
  • Meet Quidient, customer, and government security requirements, which may include, but are not limited to a background check, citizenship verification, and Criminal Justice Information Services verification.
Nice-to-Have Qualifications:
  • Experience deploying high-performance, low-latency applications.
  • Experience creating computer vision or image processing applications.
  • Metal and GPU programming experience.
  • Knowledge of Android app development (Kotlin) or cross-platform frameworks (Flutter).
  • Knowledge of cloud products and platforms, microservice architectures, automation, and API integration.
What We OfferCompensation:
  • Salary Range: $165,000 - $200,000.
  • Annual bonus and equity as appropriate.
Benefits:
  • Health insurance
  • HSA Account
  • 401(k) with company match
  • Life & disability insurance
  • Paid holidays & generous PTO
  • Opportunities for bonuses, equity, and career growth
Equal Opportunity Employer Statement

Quidient is an Equal Opportunity Employer. Quidient will consider all qualified applicants without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other classification protected by applicable state, federal, or local laws.

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