Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Front End Developer (React.js) - Contract

$60 - $90 per hour

Aequilibrium Software

Senior Front-End Developer

We seek a Senior Front-End Developer to join the Aequilibrium team as a contractor, working with our top global clients in the credit union, banking, or fintech sectors. You will be a key contributor to the development of innovative, high-scale financial and banking applications. The ideal candidate is a polyglot engineer who is equally comfortable architecting a Java microservice, optimizing a.NET Core backend, or building a high-performance React frontend.

What you will be doing:

  • End-to-End Delivery: Build, develop, and maintain complex, responsive web applications from the ground up using a variety of modern stacks.
  • Architectural Leadership: Design and implement modular, scalable, and reusable code structures that serve as the foundation for future development.
  • Cross-Stack Integration: Collaborate with distributed teams to integrate diverse APIs and services (Java,.NET, Node.js), ensuring seamless data flow and system reliability.
  • UI/UX Translation: Transform high-fidelity prototypes into performant, accessible, and pixel-perfect code.
  • Performance Engineering: Optimize application performance across the entire stack, ensuring sub-second response times and cross-browser consistency.
  • Mentorship & Quality: Lead code reviews, establish best practices, and mentor intermediate developers to elevate the team's technical bar.
  • Agile Excellence: Drive continuous improvement within an Agile/SCRUM environment, participating in all ceremonies and contributing to process evolution.

Must Have:

  • Seniority: 10+ years of professional experience in Full-Stack development, with at least 3 years in a Senior or Lead capacity.
  • The "Triple Threat" Backend: Proven, recent experience developing production-grade applications in Java (Spring Boot),.NET (C# /.NET Core), and Node.js.
  • Frontend Mastery: Expert-level proficiency in React.js (Fluency is mandatory), TypeScript, HTML5, and CSS3 (Sass/LESS).
  • Modern Web Standards: 5+ years of deep experience with TypeScript and Python.
  • Cloud Native: Hands-on experience with Azure backend systems and/or C# backends, including integration with Azure App Services, Functions, and Key Vault.
  • API Design: Solid understanding of RESTful APIs and GraphQL; experience designing contracts that bridge diverse backend ecosystems.
  • Testing Rigor: Extensive experience with testing frameworks (Jest, Mocha, xUnit, JUnit) and a "test-first" development mindset.
  • Professional Services: Experience working in the Professional Services / Consulting industry, managing client expectations and navigating high-ambiguity projects.
  • Education: Bachelor's Degree in Computer Science, Software Engineering, or a related technical field.
  • Status: Canadian resident with Citizenship or PR Status.

Nice to Have:

  • Fintech Expertise: Direct experience working with Credit Unions, Banking, or Fintech platforms.
  • Multi-Cloud: Experience deploying and managing applications across AWS and GCP in addition to Azure.
  • Mobile: Familiarity with React Native or native mobile development.

Location This is a 100% full-time remote position. Candidates residing outside of Canada will be required to work with us as independent contractors. Compensation The hourly rate for this position ranges from CAD $ 60/h to $90/h. The salary/rate offered will be based on geography, skills, and experience.

About AEQ Aequilibrium is a technology professional services organization voted multiple times among the Top 5 Best Companies to work for, Top 5 Digital Agencies, and Fastest Growing Tech Companies in BC, winner of multiple VancouverUX Awards for product design. We bring together product and project managers, designers, and developers dedicated to creating winning web, mobile, and VR solutions. Our team uses Agile methodologies and Lean Startup principles to deliver our clients' projects faster and with less risk.

Some of Our Benefits We offer our full-time employees:

  • Competitive compensation
  • Remote-first location
  • Medical, dental, and extended health benefits (premiums fully covered by the company!)
  • Employee bonus programs
  • Team-bonding events
Vacancy posted 5 days ago
Similar jobs that could be interesting for youBased on the Senior Front End Developer (React.js) - Contract in United States vacancy
  •  ...Senior Front-End Developer Duration: 6-12+ Months Contract Location: Santa Clara, CA - 5 Days Onsite Exp: 12+ Years Mandatory...  ...Have Skills Strong proficiency in React, Redux. Solid understanding of...  ...responsive web applications using React.js and Redux. Integrate front-end... 
    Contract work
    Senior
    Javascript

    Cardinal Integrated

    Santa Clara, CA
    5 days ago
  • $60 - $90 per hour

     ...applications and next steps. Our partner is looking for a Senior Front-End Developer (React.js) based in United States. This is a high-impact senior...  ...based on experience and location Fully remote-first contract opportunity Comprehensive medical, dental, and... 
    Contract work
    Senior
    Javascript
    Remote job
    Hourly pay
    Permanent employment
    Full time

    jobgether

    United States
    1 day ago
  •  ...Senior UI Developer – Angular and React JS Location: Woodland Hills, CA (Onsite) Contract Key Requirements ~8 years of experience in UI/front-end development ~ Strong expertise in Angular and React (modern frameworks, state management) ~ Proficiency in... 
    Contract work
    Senior
    Javascript

    Futran Tech Solutions Pvt. Ltd.

    Woodland Hills, CA
    5 days ago
  •  ...formal training or certification Deep expertise in modern front-end technologies React (hooks, component-based architecture, state management, contextRedux...  ...necessary to comply with law, regulation, executive order, or federal, state, or local government contract #J-18808-Ljbffr... 
    Contract work
    Senior
    Javascript
    Permanent employment
    Local area

    ETHEREUM TECHNOLOGIES LLC

    Tampa, FL
    2 days ago
  •  ...Senior Front-end Developer (React.js, HTML, CSS) Fully Remote-United States-HUD Job Type Full-time Description Overview Tanaq Technical...  ...a fully remote position supporting a federal government contract that requires a federal background check and NACI... 
    Contract work
    Senior
    Javascript
    Full time
    Temporary work
    Work at office
    Local area
    Remote work
    Flexible hours

    St. George Tanaq Corporation

    Raleigh, NC
    6 days ago
  •  ...Title – Sr. Front End Developer (React.js) Position – 6+ Months Contract Location – 100% Remote Work Rate - $Open (Best Possible) Skills : html5 / css3 / js (es6) / json / git / CLI / reactjs / react hooks Responsibilities: Strong initiative... 
    Contract work
    Senior
    Javascript
    Remote work

    TWO95 International

    United States
    7 days ago
  •  ...Role: Senior Frontend Engineer (React / Next.js) Location: Seattle, WA Contract • Build ReactJS and NextJS pages, including...  ...Insights. • Write unit and end-to-end (E2E) tests using...  ...and Playwright. • Design, develop, and ship tablet-first (... 
    Contract work
    Senior
    Javascript

    AceStack LLC

    Seattle, WA
    5 days ago
  •  ...Hello, I have an opportunity for "Sr. UI Front End Developer with React.JS" and looking for a candidate who can join Immediately if you are interested...  ...: Santa Clara, CA Duration : 6-12 month contract UI developer with front end experience React... 
    Contract work
    Senior
    Javascript
    Immediate start

    Navtech

    Canyon Country, CA
    5 days ago
  • $86.8k - $198k

     ...Job Number: R0238672 Front End Developer, Senior The Opportunity: As a full stack developer, you...  ...TypeScript, ReactJS, Angular 2+, or Vue.js ~6+ years of experience with CSS,...  ..., and experience, as well as contract-specific affordability and organizational... 
    Contract work
    Senior
    Javascript
    Full time
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    Chantilly, Loudoun County, VA
    4 days ago
  • $86.8k - $198k

     ...Share job via: Share Front End Developer, Senior The Opportunity: As a full stack...  ...TypeScript, ReactJS, Angular 2+, or Vue.js ~6+ years of experience with CSS, SCSS...  ..., and experience, as well as contract-specific affordability and organizational... 
    Contract work
    Senior
    Javascript
    Full time
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    United States
    6 days ago
  • $55 - $74 per hour

     ...Join to apply for the Senior UI Developer (contract) role at LEVEL Company Description For 25...  ...Studios is seeking a freelance Sr. Front-End Developer to support the creation, enhancement...  ...development tools such as Three.JS, React, and Node may also be leveraged.... 
    Contract work
    Senior
    Javascript
    Hourly pay
    Full time
    Temporary work
    Freelance
    Work at office
    Local area
    Remote work
    Visa sponsorship

    Level

    San Francisco, CA
    2 days ago
  •  ...Job Description Job Title: Senior Next.js UI Developer Job Location: Phoenix AZ/ Irving...  ...TX 5 days Onsite Job type: Contract/ C2C Need an experienced Next...  ...The ideal candidate has strong front end expertise, deep knowledge of React and Next.js , and experience... 
    Contract work
    Senior
    Javascript
    Work experience placement

    Sparc Technology Services Inc

    Irving, TX
    9 days ago
  •  ...Robotics Process Automation, LLC is looking for a skilled developer with hands-on Frontend Development experience utilizing React.js. The ideal candidate will possess a strong understanding of Application Design, with 10+ years of applied experience in a software engineering... 
    Senior
    Javascript

    Robotics Prcocess Automation, LLC

    Austin, TX
    2 days ago
  •  ...leading technology firm is seeking an experienced UI / Front-End Developer to build scalable React components and ensure secure UI development. You will work...  ...will have 8-10 years of experience with React.js and a strong focus on unit testing. Join us and contribute... 
    Senior
    Javascript

    Quantum Technologies USA

    Austin, TX
    2 days ago
  •  ...Figma Job is seeking a highly experienced Front end UI/UX developer with at least 14 years of experience. This hybrid role is based in Albany, NY, and requires proficiency in JavaScript, React, Angular, or Vue.js. Ideal candidates will have a strong background in web... 
    Senior
    Javascript

    Figma Job

    New York, NY
    2 days ago
  •  ...Tricon Solutions is seeking a React JS Front-End Developer for their Englewood Cliffs, NJ location. The ideal candidate will have over 5 years of experience in front-end development focusing on React.js and will be responsible for designing and developing responsive web... 
    Senior
    Javascript

    Tricon Solutions

    Englewood Cliffs, NJ
    2 days ago
  • $100k - $130k

     ...an experienced application support professional in Phoenix, AZ. The role entails providing L2/L3 support for UI applications developed in React.js and Node.js, while coordinating with business users and offshore teams. Ideal candidates will have strong technical skills... 
    Senior
    Javascript

    Tata Consultancy Services

    Phoenix, AZ
    2 days ago
  •  ...A cloud analytics firm is seeking an experienced UI/Front-End Developer to build scalable React components and integrate APIs. The role requires advanced skills in React.js, Redux, and front-end best practices, with a strong emphasis on collaboration with cross-functional... 
    Senior
    Javascript

    Cloud Analytics Technologies, LLC

    Austin, TX
    2 days ago
  •  ...leading technology firm in Austin, Texas, seeks an experienced software engineer with strong expertise in frontend development using React.js and a solid understanding of application design. Candidates should have over 10 years of experience and be proficient in HTML, CSS... 
    Senior
    Javascript

    Quantum Technologies USA

    Austin, TX
    2 days ago
  •  ...Title: Senior Frontend Developer (Vue.js / Data Visualization) Work Location & Reporting Address Richardson, TX 75082 **WFH only** Contract duration 6 months Job Details: Must Have Skills Proficiency in HTML5, CSS3, and JavaScript. Experience with... 
    Contract work
    Senior
    Javascript
    Work from home

    eTeam

    Richardson, TX
    4 days ago
  •  ...Itlearn360 is seeking a Java Script UI Developer for a position in Houston, TX. This role requires over 5 years of experience, particularly...  ...development and JavaScript. Proficiency in AngularJS, ReactJS, JS, CSS, and HTML is essential, along with excellent communication... 
    Senior
    Javascript

    Itlearn360

    Houston, TX
    2 days ago
  •  ...Senior Front End Software Engineer W/React Position Type: Contract (10-20-2025 - 03-31-2026) Location: Seattle, WA Our client...  ...estimate resources required to develop the solutions. Ensure that specifications...  ...React, JavaScript, CSS, Node.JS ~ Nice to have: 3+ years... 
    Contract work
    Senior
    Javascript

    Staffing the Universe

    Seattle, WA
    5 days ago
  •  ...Front End Developer - React JS Location: Sunnyvale, CA Duration: 6+ months Contract (With Likely Extension) Job Description Responsibilities: Strong experience on JavaScript application development Experience working with React.js, Typescript and GraphQL... 
    Contract work
    Javascript

    My3Tech Inc

    Sunnyvale, CA
    5 days ago
  •  ...provider in Dallas seeks an experienced UI Developer with 4-7 years of hands-on experience to craft responsive user interfaces using React JS. Candidates should possess strong AWS...  ...institution. The role involves designing front-end architecture, monitoring performance,... 
    Senior
    Javascript

    Quantum Technologies USA

    Dallas, TX
    3 days ago
  •  ...This is a remote position. We are urgently looking for a (Senior) Front-End JavaScript / React Developer in the region of Murcia. Candidates need to have a good...  ...with Front-End technologies; Angular, React and Vue.js, using JavaScript, HTML 5, CSS preprocessors (LESS/SASS... 
    Senior
    Javascript
    Remote work

    Be Consultancy Group

    United States
    6 hours ago
  •  ...Senior Front-End Developer-React.js This is a remote position. Job Role: We are seeking a Senior Front-End Developer-React.js who will play a pivotal role in spearheading our frontend development initiatives. This remote position requires an individual with expertise... 
    Senior
    Javascript
    Work experience placement
    Remote work
    Flexible hours

    AppMySite

    United States
    6 hours ago
  • $55 - $64 per hour

     ...Job Description Job Title: Senior React Developer Position Type: Contract Location: Richmond, VA (hybrid) Duration: Long Term Contract Salary Range / Rate (...  ...experience using React Basic understanding and exposure to Next.JS Knowledge of TypeScript, JavaScript, HTML5, and CSS3... 
    Contract work
    Senior
    Javascript
    Long term contract
    Work experience placement

    6AM City

    Virginia, MN
    2 days ago
  •  ...Location: San Jose, 95110 Employment type: Contract/Full time Required Experience: We are...  ...the below skill set. ~3 to 4+ years of front-end development experience (HTML, CSS, Javascript) ~ JavaScript, Angular.js. EcmaScript 6 (EC6) experience preferred.... 
    Contract work
    Senior
    Javascript
    Full time

    ClifyX

    San Jose, CA
    5 days ago
  •  ...A leading technology service provider is seeking a Backend Nodejs Senior Developer for a remote position in Plano, TX. The ideal candidate will have extensive experience with Node.js and React.js, and will be responsible for maintaining a Node.js-backed platform. The... 
    Contract work
    Senior
    Javascript
    Hourly pay
    Remote work

    NTT DATA North America

    Plano, TX
    1 day ago
  •  ...Itlearn360 is looking for a Senior React Web Developer to lead the development of top-notch web applications...  ...over 5 years of experience in React.js and a passion for building accessible,...  ...web applications. This role offers a contract-to-hire opportunity with the potential... 
    Contract work
    Senior
    Javascript
    Full time
    Remote work

    Itlearn360

    New York, NY
    5 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Front End Developer (React.js) - Contract. Be the first to apply!