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Freelance Fintech Software Engineer Jobs in Portland, OR

Galois, Inc.

Research Engineer

Portland, OR · On-site

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... fintech. Research Engineers at Galois design and develop advanced technologies for safety- and ... About This Role Galois is hiring a Software Engineer/Researcher to join our team! This role will ...

Galois, Inc.

Research Engineer

Portland, OR · On-site

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... fintech. Research Engineers at Galois design and develop advanced technologies for safety- and ... About This Role Galois is hiring a Software Engineer/Researcher to join our team! This role will ...

Galois, Inc.

Research Engineer

Portland, OR

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... fintech. Research Engineers at Galois design and develop advanced technologies for safety- and ... About This Role Galois is hiring a Software Engineer/Researcher to join our team! This role will ...

Impact Scale LLC

Go Backend Developer

Vancouver, WA

$140K - $180K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Backend Software Engineer (Go) Position Overview Impact Scale is seeking an experienced Senior ... Experience in AdTech, lead generation, martech, or fintech * Exposure to Rust Benefits Perks ...

Hiive

Developer Experience Engineer

Vancouver, WA · On-site +1

  • Medical

  • Dental

You will treat Engineering as your customer, identify the highest-friction parts of the software ... Experience in a high-growth fintech, marketplace, or regulated technology environment.

Mercury

Senior Frontend Engineer - Design Systems

Portland, OR · On-site

$129K - $178K/yr

Mercury is a fintech company focused on creating reliable design systems for their products. As a ... software development: a real command of how emerging AI paradigms are changing the way software ...

Motion Recruitment Partners, LLC

Sr PM

Beaverton, OR · On-site

Partner with engineers, developers, architects, and technical teams throughout the Software ... FinTech * Highly regulated or compliance-driven environments Preferred Technical Skills Experience ...

Collabera

NetSuite ERP Integration Developer

Lake Oswego, OR · Hybrid

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... 66th on FinTech 100 35th among top private companies in New Jersey Collabera recognizes true ... Job Responsibilities Writes new software, makes modifications to existing software, or integrates ...

DAT

Engineering Manager

Portland, OR

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

On a defined path to $1 billion in revenue, DAT deploys a suite of software solutions, machine ... Domain Background: freight, logistics, marketplace, or fintech experience. - Integrations ...

DAT

Engineering Manager

Portland, OR · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

On a defined path to $1 billion in revenue, DAT deploys a suite of software solutions, machine ... Domain Background: freight, logistics, marketplace, or fintech experience. - Integrations ...

DAT Solutions

Engineering Manager

Portland, OR · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

On a defined path to $1 billion in revenue, DAT deploys a suite of software solutions, machine ... Domain Background: freight, logistics, marketplace, or fintech experience. - Integrations ...

New

Uniting Holding

Head of Product

Vancouver, WA · On-site

$180 - $280/hr

... software development processes. * Experience working closely with engineering teams. * Strong ... Experience in SaaS, MarTech, FinTech, Lead Generation, or Performance Marketing. * Experience ...

Impact Scale LLC

Head of Product

Vancouver, WA · On-site

$80K - $120K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... software development processes. * Experience working closely with engineering teams. * Strong ... Experience in SaaS, MarTech, FinTech, Lead Generation, or Performance Marketing. * Experience ...

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All JobsFintech Software Engineer JobsFreelance Fintech Software Engineer JobsFreelance Fintech Software Engineer Jobs in Portland, OR

Freelance Fintech Software Engineer information

See Portland, OR salary details

$15

$50

$140

How much do freelance fintech software engineer jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for freelance fintech software engineer in Portland, OR is $50.59, according to ZipRecruiter salary data. Most workers in this role earn between $25.77 and $65.53 per hour, depending on experience, location, and employer.

What is a freelance fintech software engineer?

Freelance Fintech Software Engineers are independent professionals who specialize in developing, maintaining, and improving software solutions for the financial technology (fintech) industry. They work on a contract or project basis with clients such as banks, startups, or payment companies, building secure, scalable applications like payment gateways, trading platforms, or digital wallets. Their responsibilities often include coding, testing, integrating APIs, and ensuring compliance with financial regulations. Freelance fintech engineers must stay updated with industry trends, security practices, and evolving technologies to meet the unique needs of financial clients.

How do freelance fintech software engineers typically collaborate with clients and cross-functional teams?

Freelance Fintech Software Engineers often work remotely, but strong collaboration is still essential. They usually communicate with clients, product managers, and designers through regular video meetings, project management tools, and messaging platforms to clarify requirements and provide updates. It’s common to participate in code reviews, agile sprints, and documentation processes to ensure seamless integration with existing systems and compliance with financial regulations. Clear communication and proactive feedback help maintain trust and deliver high-quality solutions, even when working independently.

What are the key skills and qualifications needed to thrive as a freelance fintech software engineer, and why are they important?

A Freelance Fintech Software Engineer must have strong programming skills (such as Python, Java, or C#), a solid understanding of financial systems, and experience with secure software development, typically supported by a degree in computer science or a related field. Familiarity with fintech-specific tools and frameworks (like blockchain platforms, payment APIs, or cloud platforms such as AWS), as well as relevant certifications (e.g., AWS Certified Developer or Certified FinTech Professional), is often required. Outstanding problem-solving abilities, communication skills, and the ability to manage projects independently set top freelancers apart. These competencies are crucial for delivering robust, secure, and innovative solutions in the rapidly evolving fintech sector.

What is the difference between Freelance Fintech Software Engineer vs Fintech Software Developer?

AspectFreelance Fintech Software EngineerFintech Software Developer
CredentialsTypically requires relevant coding skills, experience, and sometimes certifications in finance or software developmentUsually holds a degree in computer science, software engineering, or related fields; certifications are common but not mandatory
Work EnvironmentIndependent, project-based, often remote or freelance contractsEmployed by a company or fintech firm, working in office or remote teams
Employer & Industry UsageServes multiple clients across fintech projects, flexible engagementsWorks within a fintech company or startup, focused on product development

While both roles involve software development in fintech, a Freelance Fintech Software Engineer works independently on various projects, whereas a Fintech Software Developer is typically employed by a company to develop specific products or services.

What are the most commonly searched types of Fintech Software Engineer jobs in Portland, OR?

The most popular types of Fintech Software Engineer jobs in Portland, OR are:

What are popular job titles related to Freelance Fintech Software Engineer jobs in Portland, OR?

For Freelance Fintech Software Engineer jobs in Portland, OR, the most frequently searched job titles are:

What job categories do people searching Freelance Fintech Software Engineer jobs in Portland, OR look for?

The top searched job categories for Freelance Fintech Software Engineer jobs in Portland, OR are:

Freelance Fintech Software Engineer jobs near you

Senior Software Engineer - Mercury Command

Mercury

Portland, OR • On-site

$129K - $171K/yr

Full-time

Re-posted 21 days ago

Job description

Job Summary:
Mercury is a fintech company that is building technology to enhance financial interfaces for the long term. The Senior Software Engineer will be responsible for designing and shipping new capabilities for Command, maintaining the LLM layer, and ensuring the reliability and quality of the product.
Responsibilities:
• Design and ship new Command skills, the domain-specific instruction sets that teach the model how to handle workflows like sending money, managing invoices, and understanding cash flow
• Design and build agentic workflows in Command, defining the architecture for how multi-step agent interactions should work as we extend what the product can do on a customer's behalf
• Work with backend teams to define tool schemas for new capabilities, shaping the data contracts between Mercury's business logic and the model
• Own new capabilities end to end, from the system prompt to the frontend component that renders the response
• Maintain and evolve Command's prompt architecture: the system prompt, skill loading system, session context, and the policy and compliance layers underneath
• Tune model behavior: reasoning effort, prompt caching strategy, fallback chains, and the streaming patterns that make the product feel fast
• Stay current with how models are evolving and bring that knowledge back to how Command is built
• Write and expand Command's eval harness, adding cases that cover new capabilities and scoring rubrics that detect regressions before users do
• Partner with product and compliance teams to define what 'working correctly' means for each new capability, then build the tests that prove it
• Own the reliability and quality of what you ship, from initial design through post-launch monitoring
Qualifications:
Required:
• Has 7 or more years of software engineering experience, with deep technical expertise building and scaling LLM-powered applications in production
• Has gone beyond shipping a first version: you have scaled an LLM-powered product, dealt with the reliability and performance problems that come with real usage, and made it better over time
• Has experience designing agentic systems and has opinions about how to architect multi-step workflows that are reliable, explainable, and safe to run on behalf of real users
• Has built eval infrastructure and can write cases that actually measure whether the product works, not just whether the model outputs something plausible
• Understands the real tradeoffs in LLM deployments: latency, cost, compliance, and what breaks in production that doesn't show up in demos
• Has opinions about what makes an AI product trustworthy, not just impressive, and can build toward that bar
• Is comfortable with TypeScript and willing to learn Haskell for backend tool work, or already comfortable with both
• Can work across the full stack of an AI product, from the system prompt to the streaming frontend
• Has a track record of mentoring engineers and raising the technical bar of their team
Company:
Mercury provides digital banking and financial tools tailored for startups and modern businesses. Founded in 2017, the company is headquartered in San Francisco, USA, with a team of 1001-5000 employees. The company is currently Late Stage.

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