Wallet Developer（Front-end）

Client-Facing Technical Partner - Remote
About
Small, experienced engineering team specializing in AI/ML, cloud, and full-stack development for US clients. 
Role
We are looking for a native/fluent English speaker to represent our engineering team in client meetings, interviews, and project discussions. 
Responsibilities
Join client meetings and interviews.
Communicate requirements, timelines, and technical approaches.
Bridge communication between clients and developers.
Build strong relationships with US-based clients.
 
Requirements
Native/fluent English speaker based in the US, Canada, or Latin America.
Strong verbal communication skills.
Basic understanding of software development, AI/ML, cloud, or web/mobile.
Comfortable with client-facing technical discussions.
 
Offer
30-50$/hr.
Fully remote and flexible schedule.
Full technical support during client meetings.
Direct access to US clients and networking opportunities.
Type: Partnership / Contractor
Location: Remote (US/Canada/Latin America)

I am Sadr, CEO of Oferli. We are building a high-performance, elite technical team, and I am looking for 5 to 10 dedicated founding technical partners to join me in this mission.
​The Vision:
Oferli is a 100% decentralized ecosystem. While we are rooted in Web3, our expertise spans across professional web and mobile application development. We are not just another agency; we are crafting the next generation of digital solutions. Our goal is to set a new standard for excellence, transparency, and decentralization.
​What I am looking for:
I am building a professional, senior-level "Elite Team." I am looking for partners who are truly passionate about the vision—not just short-term gains. By combining our individual expertise and portfolios, we will establish Oferli’s collective professional reputation.
​Requirements:
​Proven Expertise: You must be a senior-level professional. Please provide your portfolio showcasing your best work in web and mobile development.
​Commitment: This is a founding partnership. We are looking for those who believe in the mission and are ready to tackle complex challenges together.
​Professionalism: We operate with high standards. Communication and efficiency are key.
​How We Work:
​Collaboration: We use professional, secure channels for all communications. Qualified candidates will be contacted via email to be invited to our private workspace on Notion to align on our roadmap and launch our upcoming projects.
​Decentralized Operations: We leverage Web3 tools for collaboration and compensation, maintaining a fully decentralized environment.
​Growth: We are launching with a core team of at least 5 founding partners, scaling to 10, to deliver high-impact results for our clients.
​Application Process:
If you are a senior professional ready to build a world-class, decentralized ecosystem, apply here on LaborX. Qualified candidates will be contacted via email for further professional vetting and onboarding.
​Let’s build the future, together.
​Sadr B
CEO, Oferli

We are currently seeking a skilled professional to join our team as a Full-time Hackintosh iOS Developer. In this role, you will be responsible for developing iOS applications for our Hackintosh platform. The ideal candidate will have a strong background in Web, Mobile, and Software Development, Engineering & Architecture, Customer Service, and Accounting and Consulting Specialist.
Responsibilities:
- Designing, developing, and implementing iOS applications for our Hackintosh platform
- Collaborating with cross-functional teams to define, design, and ship new features
- Troubleshooting application bugs and implementing solutions
- Ensuring the performance, quality, and responsiveness of applications
- Staying up-to-date with the latest industry trends and technologies
- Providing technical support and guidance to users as needed
Requirements:
- Proven work experience as an iOS Developer or similar role
- Proficient in Objective-C, Swift, and Xcode
- Strong understanding of iOS development best practices
- Excellent problem-solving skills
- Ability to work independently and as part of a team
- Strong communication and interpersonal skills
- Knowledge in web, mobile, and software development, engineering & architecture, customer service, and accounting and consulting specialist
If you are passionate about iOS development and eager to work on innovative projects in the Hackintosh space, we'd love to hear from you. Please apply with your resume and portfolio to be considered for this exciting opportunity.

Our client is seeking a backend engineer to assume full responsibility for core functionalities on their medical imaging platform. In this role, you will not just hand off your code at the pull request stage but will be directly accountable for system accuracy, production stability, and the security of clinical data that impacts patient care directly.

The data science team creates machine learning models; your task is to create the robust, deterministic platform that supports them. Your responsibilities will include designing scalable architectures, resolving concurrency issues, ensuring seamless data migrations without downtime, and ensuring the stability of legacy services as their replacements are developed.

Responsibilities:

Full ownership of the technical roadmap of our Python/FastAPI ecosystem, encompassing API design, background task distribution, and production observability.

Manage and develop our PostgreSQL schema in terms of data integrity and persistence, including migrations, lock mechanisms, query optimization, and multi-tenant data isolation while adhering to HIPAA/PHI compliance.

Design and implement resilient image processing pipelines for handling intensive medical imaging files in asynchronous, event-driven workflows from ingestion and de-identification to model inference and result delivery.

Establish reliable API interfaces with frontend teams and clear model input/output contracts with data scientists to ensure a smooth cross-functional collaboration.

Keep thorough technical records, oversee the transition of legacy systems, and maintain Architecture Decision Records (ADRs).

Requirements:

Minimum of 5 years of software engineering experience with demonstrated production ownership and deep expertise in systems and backend fundamentals.

Proficiency in concurrency and distributed systems with a strong understanding of race conditions, deadlocks, idempotent processing, and messaging failure modes.

Hands-on experience with PostgreSQL internals and message brokers in a production environment.

Strong commitment to typed code, automated testing, CI/CD pipelines, Docker, and modern AI developer tools.

Ability to challenge requirements, set technical standards, and communicate effectively in both English and Chinese.

Nice-to-have Skills:

Familiarity with operating containerized workloads on Google Cloud Platform.

Direct experience with medical imaging workflows, DICOM standard protocols, or healthcare regulatory frameworks.

Knowledge of multi-tenant database patterns or deploying hybrid cloud/on-prem solutions.

Exposure to scientific computing contexts like NumPy, computational geometry, or frontend technologies like React/TypeScript.

Certain AI tools may be utilized in the hiring process for tasks such as application review and assessing candidate materials. These tools assist but do not replace human judgment, with final hiring decisions being made by humans. For more information on data processing, please contact us directly.

Are you ready to advance your international career? If so, we are here to guide you!

Ubiminds is a forward-thinking company that prioritizes its people and collaborates with American software product enterprises to expand their global teams. We carefully select top talent from Latin America and match professionals with enduring, impactful opportunities while delivering full support as an employer-of-record.

We are currently seeking a skilled Senior Fullstack Developer who enjoys tackling complex technical hurdles, constructing robust backend systems, and developing responsive web applications. As a key contributor in this role, you will be instrumental in the design, expansion, and upkeep of essential platform features and web interfaces utilized by millions of learners and institutions worldwide.

Job Challenges:

In this position, you will embark on significant career-enhancing endeavors, refining your expertise and contributing to a team that values continuous improvement, technical ownership, and ongoing learning.

As a Senior Developer, your responsibilities will entail designing, constructing, and maintaining high-capacity backend services and user interfaces throughout the product ecosystem. Leading technical initiatives spanning across multiple sprints, producing precise technical specifications, coding in C# and JavaScript/TypeScript, and utilizing AWS infrastructure to ensure platform reliability will be part of your daily tasks.

Additionally, you will have the chance to mentor team members, collaborate with product and support teams, and actively engage in projects that embody our core values and raise engineering standards across all departments.

Responsibilities:

Software Engineering & Architecture: Produce top-tier code in C# for backend services and JavaScript/TypeScript for web applications, emphasizing scalable and fault-tolerant component architectures and APIs.

Technical Design & Planning: Craft detailed technical specs for multi-sprint projects, including cost estimations and architectural assessments, while actively seeking peer feedback during technical design evaluations.

Cloud Architecture & Integration: Develop and deploy services leveraging Amazon Web Services (AWS), working alongside DevOps and Cloud teams to ensure optimal performance and security.

Code Quality & Technical Standards: Participate in code reviews, enforce coding standards, and maintain robust test coverage across the codebase.

Mentorship & Collaboration: Guide mid-level and junior developers, promote a culture of technical rigor, and collaborate across departments to deliver customer-centric features.

Customer Empathy & Operational Support: Collaborate with support teams to address complex technical escalations, maintaining a deep understanding of customer needs and product usage.

Mandatory Skills:

Proficiency in Advanced English level

Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent industry experience

4+ years of professional software engineering experience in delivering complex customer-facing applications

Strong skill set in C# or Java, with a good transition capability to C#, and proficiency in object-oriented design principles

Proficiency in JavaScript and contemporary frameworks like TypeScript, Node.js, React

Strong knowledge of Amazon Web Services (AWS) core services and cloud infrastructure

Deep understanding of core CS fundamentals

Effective communication skills, both written and verbal

Nice to Have:

Experience with modern front-end frameworks like React and building single-page applications

Proven experience in developing and maintaining public or enterprise RESTful APIs and microservices

Background in high-scale SaaS or cloud platform environments

Familiarity with educational software ecosystems and enterprise integration standards like SAML, OAuth2, LTI

Team & Environment:

International, distributed engineering team

Ownership-driven culture, where engineers lead solutions from start to finish

Focus on modernization, automation, and enhancing developer experience

Ample autonomy to suggest and implement enhancements

Collaborative setting with significant impact on engineering efficiency.

About Ubiminds:

Our Culture:

People-First: Focus on people as the top priority

Challenge Yourself: Embrace continuous improvement and self-challenge

Make It Happen: Ready to tackle challenges with a dedicated attitude

We're in This Together: Teamwork, growth, and evolution as a collaborative entity

Averaging on Awesome: Commitment to exceeding expectations with high-quality service

Keep It Real: Guaranteeing honesty, transparency, and openness across all scenarios

Perks and Benefits:

Placed within a product-based company with equivalent employee treatment

Full back-office support, from career guidance to concierge services

Remote-first policy for a distributed team

MacBook provided, no need for a personal device

Access to growth opportunities through technology-focused events and interactions

English improvement programs for free

Candidate referral bonus opportunity

On-site headquarters available for use, equipped with amenities for a comfortable workspace.