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Internship Contract Flutter Developer Jobs (NOW HIRING)

De Circle

Reins - Fullstack Engineer

San Francisco, CA · On-site +1

... contracts, full-stack, backend, and product/frontend. Infrastructure/devops is not a current ... Ability to collaborate on frontend/product work is a plus (Dart/Flutter experience beneficial)

UJET

AI Data Engineer

Los Angeles, CA · On-site

$123K - $148K/yr

Prior production engineering experience with data pipelines, integrations, or analytics infrastructure - internship, contract, or full-time all qualify * Daily fluency with a standard engineering ...

Kikoff

Software Engineer - Recent Grad

San Francisco, CA · On-site

$165K/yr

Calling all new grad and junior software engineers who are looking for fast personal and career ... Our frontend and mobile apps are written in ReactJS on Vercel and Flutter. Strong internships and ...

UJET

AI Data Engineer

Los Angeles, CA · On-site

$123K - $148K/yr

Prior production engineering experience with data pipelines, integrations, or analytics infrastructure - internship, contract, or full-time all qualify * Daily fluency with a standard engineering ...

Babich & Assoc.

Be Seen First

MOBILE APP QA ANALYST

Dallas, TX · Remote

$80K - $100K/yr

REQUIRED MOST CRITICAL SKILLS SNAPSHOT: · iOS AND ANDROID MOBILE TEST AUTOMATION · FLUTTER ... NO C2C OR CONTRACT APPLICANTS This is a permanent/full time direct-hire remote role with a salary ...

OVA.Work

Junior software engineer

Alpharetta, GA · On-site

... enthusiastic Intern Developer to join their development team. This internship offers a great ... Flutter. • Knowledge of databases (SQL or NoSQL). • Participation in coding competitions ...

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Internship Contract Flutter Developer information

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How much do internship contract flutter developer jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for internship contract flutter developer in the United States is $22.89, according to ZipRecruiter salary data. Most workers in this role earn between $18.51 and $24.28 per hour, depending on experience, location, and employer.

What is the difference between Internship Contract Flutter Developer vs Junior Flutter Developer?

AspectInternship Contract Flutter DeveloperJunior Flutter Developer
CredentialsTypically enrolled students or recent graduates, no formal certification requiredUsually requires some Flutter knowledge, possibly a certification or portfolio
Work EnvironmentTemporary, learning-focused, often part-time or project-basedFull-time or part-time employment, more responsibility
Employer UsageInternships offered by companies for training purposesCompanies hiring for ongoing development roles

The main difference is that an Internship Contract Flutter Developer is a temporary, learning-focused position aimed at gaining experience, while a Junior Flutter Developer is a more permanent role requiring some skills and responsibility. Internships are ideal for students or beginners, whereas Junior roles are for those with foundational knowledge ready to contribute more significantly.

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Internship Contract Flutter Developer jobs near you
Infographic showing various Internship Contract Flutter Developer job openings in the United States as of August 2026, with employment types broken down into 12% Internship, 58% Full Time, 27% Part Time, 1% Temporary, and 2% Contract. Highlights an 85% Physical, 2% Hybrid, and 13% Remote job distribution, with an average salary of $47,621 per year, or $22.9 per hour.

Reins - Fullstack Engineer

De Circle

San Francisco, CA • On-site, Remote

Full-time

Re-posted 29 days ago

Job description

Reins is building an enterprise stablecoin account that looks and feels like a first-class business bank account, while giving companies the benefits of stablecoin rails and self-custody. Reins makes stablecoins operationally simple for businesses, providing familiar banking features such as ACH, wires (and global equivalents like SEPA), cards, multi-level permissions, approvals, and AML/compliance workflows-combined with stablecoin-native advantages like instant 24/7 global settlement, better control via self-custody, and access to lending, insurance, and exchange markets as DeFi infrastructure matures.
Role Overview
You'll work directly with founder and CEO Sebastian Delgado (co-founder of Fei Labs), taking ownership of meaningful chunks of backend, full-stack, and security work. The role is flexible:
  • Full-stack engineer (preferred)
  • Backend engineer
  • Product/frontend contributor (optional)

Focus areas are prioritized as follows: security & smart contracts, full-stack, backend, and product/frontend. Infrastructure/devops is not a current priority.
Backend & Integrations
  • Design and build backend services connecting custody, fiat rails, policies, and operational workflows
  • Implement and maintain APIs and services for ACH, wires, cards, permissions, AML/compliance workflows, and reporting
Smart Contracts & Security
  • Implement and review Solidity smart contracts, focusing on correctness, safety, and upgradeability
  • Contribute to threat modeling, security reviews, and audit/vendor management

Product & Full-Stack Work
  • Collaborate on the design and implementation of customer-facing applications (currently Dart/Flutter)
  • Translate user and operational needs into product and UX decisions, especially around permissions, approvals, and money flows

Security & Audit Participation
  • Own parts of audit/security review processes for your areas of the stack
  • Coordinate with external security firms
  • Build internal systems and processes with a security-first mindset appropriate for handling customer funds

  • Strong background as a backend or full-stack engineer, ideally in early-stage fintech (Plaid, Brex, Ramp, modern neobanks)
  • Experience with crypto infrastructure, wallets, or stablecoin projects
  • Proficiency in Solidity smart contracts or a willingness to contribute to security-critical logic
  • Familiarity with APIs, integrations, and operational workflows (ACH, wires, cards, permissions, AML/compliance)
  • Ability to collaborate on frontend/product work is a plus (Dart/Flutter experience beneficial)
  • Strong understanding of security best practices for handling customer funds
  • Excellent problem-solving, attention to detail, and autonomy in early-stage environments

Preferred Backgrounds
  • Early engineers at crypto infra/wallet/stablecoin companies
  • Strong backend/full-stack engineers from top fintechs who are crypto-native

Apply