Senior Software Engineer - Mobile (React Native)
San Francisco, USA
Full time
Office
Compensation is not specified
Role
Software Engineer
Description
BitGo is the leading provider of digital asset solutions, offering a range of services from custody to staking, trading, and more, all from regulated cold storage. Founded in 2013, our focus is on providing security in the digital asset space to our global client base. With multiple Trust companies worldwide, BitGo serves a wide array of institutions and individual investors. As a key player in the digital economy, BitGo handles a significant volume of Bitcoin transactions and is the largest independent digital asset custodian and staking provider globally.
This position involves full-time onsite work at our San Francisco office to foster teamwork and innovative problem-solving.
We are seeking a Mobile Software Engineer experienced in React Native to join our team. The role focuses on developing cross-platform mobile applications that enhance the user experience for BitGo customers.
Responsibilities:
- Design and develop advanced applications using React Native for iOS and Android platforms.
- Collaborate with cross-functional teams to deliver new features.
- Write clean, efficient code while ensuring performance and quality of applications.
- Identify and resolve bugs and bottlenecks.
- Continuously research and implement new technologies to enhance development efficiency.
- Participate in code reviews and contribute to a culture of improvement.
- Work closely with product managers, designers, and engineers to refine requirements.
- Provide mentorship to peers through code reviews and sharing best practices.
Skills & Experience:
Candidates should exemplify our values of open communication, transparency, ownership, and craftsmanship, aligning with BitGo's mission to deliver trust in digital assets.
Required:
- Minimum 6 years of experience in mobile application development with React Native.
- Proficiency in JavaScript, ES6, TypeScript.
- Solid understanding of the mobile development life cycle.
- Knowledge of UI/UX standards and mobile design principles.
- Experience with SQL databases (e.g., MySQL, Postgres) and RESTful API design.
- Strong testing and debugging skills.
- Proficient in Git, GitHub, code review tools, CI tools, etc.
- Bachelor’s degree in computer science or related technical discipline.
- Interest in cryptocurrencies and blockchain technology.
- Strong problem-solving skills and ability to work independently in a fast-paced environment.
Preferred:
- Experience in native mobile development (iOS/Android).
- Background in the financial industry.
- Familiarity with digital wallets, trading, and other financial systems.
Why Join BitGo?
Embrace innovation and collaboration with a team that values excellence, ownership, and open communication. Be part of a team that impacts the financial markets and the world. Offering competitive compensation, benefits, and a stimulating startup environment, your contributions at BitGo will shape the future of investing.
The compensation for this role typically ranges between $165,000 - $210,000 USD base salary, along with equity, annual bonuses, and comprehensive benefits.
Benefits include health insurance, 401k match, parental leave, vacation time, commuter benefits, free meals, equipment, and more, with variations based on location.
Join BitGo to be part of the transformative innovations in the financial services industry.
Skills Required
BitGo
Website
www.bitgo.comCompany size
Not specified
Location
United States
Description
Not specified
artech-digital
Senior Software Developer (Web3 / Full-Stack) – Remote (Full-Time / Part-Time)
San Francisco, USA
San Francisco, USA
Full time
Remote
We are building a next-generation hybrid platform that combines ecommerce and Web3 technologies. Our goal is to create a scalable, secure, and user-friendly system that integrates modern blockchain features with real-world applications.
We are looking for an experienced **Senior Software Developer** to join our team on a flexible basis (full-time or part-time), with a strong preference for long-term collaboration.
---
🔹 Responsibilities
* Build and maintain scalable APIs and microservices
* Integrate blockchain/Web3 functionalities where required
* Collaborate with frontend developers and product team
* Write clean, maintainable, and well-documented code
---
🔹 Requirements
* Solid understanding of backend architecture and system design
* Experience with REST APIs, databases, and cloud services
* Familiarity with Web3/blockchain concepts (preferred)
* Experience with modern frontend frameworks (React or similar is a plus)
* Good communication skills and ability to work remotely
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🔹 Nice to Have
* Experience in ecommerce systems
* Smart contract or blockchain integration experience
* DevOps / CI-CD knowledge
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💰 Compensation
✔$30 – $70 USD/hour** (depending on experience)
OR
✔$4,000 – $9,000 USD/month** (full-time equivalent)
Flexible for both **full-time and part-time** engagements.
---
🌍 Work Setup
* Fully remote
* Flexible working hours
* Open to full-time or part-time
* Long-term opportunity with potential for growth
---
🌐 Company
* Website: https://www.artech-digital.com/
* Fiverr Pro: https://pro.fiverr.com/agencies/artech
---
We value clear communication, practical experience, and a problem-solving mindset. Looking forward to connecting with skilled developers who want to build impactful products.
HubsAI
Senior web3 engineer
Treynor, USA
Treynor, USA
Part time
Remote
About the Project:
We’re building a SocialFi platform combining real estate and DeFi. After launching our MVP, we’re now progressing to version 2.
Role:
Join our remote team to develop website, smart contracts, integrate blockchain features, and ensure platform security.
Responsibilities:
- Develop and deploy smart contracts on Ethereum or Layer 2.
- Integrate wallet connect and decentralized features.
- Collaborate and direct contribute with frontend/backend teams.
- Conduct security audits.
Requirements:
- Experience with React, Ethers.js, Web3.js.
- Familiarity with wallet extensions and DeFi protocols.
- Ability to fix errors within 1 hour during tests.
- Comfortable working independently in a remote setup.
Nice to Have:
- Knowledge of cross-chain protocols or cryptography.
- Experience in social finance or real estate blockchain projects.
Application:
Send your resume and Linkedin profile. Selected candidates will do a quick coding test.
Contact: contact@hubsai.net
Join us to help shape the future of SocialFi!
We’re building a SocialFi platform combining real estate and DeFi. After launching our MVP, we’re now progressing to version 2.
Role:
Join our remote team to develop website, smart contracts, integrate blockchain features, and ensure platform security.
Responsibilities:
- Develop and deploy smart contracts on Ethereum or Layer 2.
- Integrate wallet connect and decentralized features.
- Collaborate and direct contribute with frontend/backend teams.
- Conduct security audits.
Requirements:
- Experience with React, Ethers.js, Web3.js.
- Familiarity with wallet extensions and DeFi protocols.
- Ability to fix errors within 1 hour during tests.
- Comfortable working independently in a remote setup.
Nice to Have:
- Knowledge of cross-chain protocols or cryptography.
- Experience in social finance or real estate blockchain projects.
Application:
Send your resume and Linkedin profile. Selected candidates will do a quick coding test.
Contact: contact@hubsai.net
Join us to help shape the future of SocialFi!
Payment in Crypto
Michael Har
Junior / Middle Metaverse Developer (Unity / Web3 / VR)
Manzhouli, China
Manzhouli, China
Full time
Remote
We are looking for a Metaverse Developer to help build interactive virtual environments and immersive digital experiences. The role involves developing 3D worlds, integrating Web3 technologies, and working with modern tools for real-time applications.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
Payment in Crypto
Sirex
Junior/Mid Decentralized Infrastructure Engineer
Full time
Remote
Role:
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Payment in Crypto
Neonflick
Web3 Fullstack Developer
Part time
Remote
🌐 About Us
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.