Senior Mobile Engineer
Status
Full time
Remote
Compensation is not specified
Role
Android Developer
Description
About the Company
Casa is a leading bitcoin and ethereum security company that focuses on providing its members with unprecedented control over their digital wealth. Through a combination of deep security expertise, human-centered design, and exceptional customer service, Casa empowers its members and aims to build long-lasting relationships with them.
The Role
As a key member of our engineering team, you will collaborate closely with the product team to deliver high-quality features in Casa's Android app. You will also support our iOS app as needed. With your strong interest and prior experience in cryptocurrency and cryptography, you will play a pivotal role in providing technical guidance and advice for critical decisions. Your contributions will drive growth, enhance revenue, and shape product strategies. This position is fully remote and will report to the Head of Engineering.
Responsibilities
- Collaborate closely with product managers to assess, plan, and deliver feature work
- Identify, research, and resolve critical production bugs
- Work with testers to ensure adequate test coverage through unit tests and contribute to automated test suites
- Provide technical mentorship and feedback to other members of the engineering team
- Contribute to the evolution of our mobile architecture to improve development efficiency and quality consistently
Qualifications
- Minimum 5 years of experience working in Java or Kotlin
- Shipped one or more Android apps currently available in the Google Play Store
- Passionate about building technically robust apps that provide an excellent user experience
- Proficient in consuming RESTful APIs for back-end integration
- Experienced in Agile development environments, backlog grooming, task definition, and effort estimation
Requirements
- Bachelor's degree in Computer Science or equivalent experience
- Strong knowledge of Java or Kotlin
- Familiarity with Jetpack Compose
- Strong focus on quality and test automation (functional, integration, etc.)
- Strong interest in security principles
- Excellent communication skills, able to present findings to both technical and non-technical audiences
- Traits we value: exceptional organization, attention to detail, transparency, collaboration, and personal integrity
Bonus Skills
- Prior experience with Swift or JavaScript
- Experience in cryptocurrency and cryptography
- Understanding of database technologies (SQL, NoSQL, ElasticSearch, Cassandra, Mongo, etc.)
- Familiarity with open-source implementations and cloud environments
- Knowledge of Infrastructure-as-code and infrastructure automation
- Keen eye for user experience improvements and good design
Why Casa?
At Casa, we believe in empowering individuals to secure their digital sovereignty, and we strongly believe in empowering our employees to do their best work. As part of the Casa team, you'll experience the following benefits:
- Ownership: We offer equity opportunities, allowing employees to benefit from our collective achievements.
- Community: We value inclusivity and foster a sense of community within our team, known as the Casa Space Fleet, which brings out the best in everyone.
- Rest and Relaxation: We encourage and embrace personal time, offering flexible schedules and at least 3 weeks of paid time off each year.
- Health Benefits: We provide comprehensive medical coverage with options for FSA, dental, vision, and access to mental health providers.
- Remote Success: We reimburse up to $400 for home office setup, ensuring a conducive and comfortable remote work environment.
- Investment Avenues: We offer resources for employees to invest a portion of their paycheck in Bitcoin, along with the option for a traditional 401(k) plan.
- Maternity/Paternity Leave: We provide 12 weeks of maternity leave and 4 weeks of paternity leave.
- Location-Based Perks: Since we are a fully remote company, our perks and benefits may vary based on your specific location.
Casa is an equal employment opportunity employer, welcoming all qualified applicants without regard to race, sex, color, religion, national origin, age, disability, veteran status, genetic data, or other legally protected status.
Skills Required
Casa, Inc.
Website
casa.ioCompany size
Not specified
Location
United States
Description
We build tools at the forefront of self-custody, putting the power back in the hands of the individual. We build our teams with this same sense of purpose, empowering people to do their best work.
Status
Ian Fox
Need SEO expert to get us to Google first page rank
Full time
Remote
I need an SEO expertteam who is capable of getting our shops to Google first page rank on our desired keywords
Payment in Crypto
Quinn Bosnie
Have you built token launch platforms or bonding curves on Solana before?
Amsterdam, Netherlands
Amsterdam, Netherlands
Full time
Remote
Hey, I’m launching a project a secure, user-friendly memecoin launchpad on Solana that fixes the problems with platforms like Pump.fun (rug pulls, no LP locks, devs dumping). I’m looking for a Solana smart contract dev (or full-stack) to help me build an MVP. This includes:• Token creation with a dev wallet cap (max 5%)• Bonding curve or simple fair launch system• Auto liquidity lock for 3 months• Optional blue badge verification (paid upgrade)• Raydium listing or integration I’d love to know if you’ve worked on similar Solana or DeFi projects. If you’re interested, I can send a quick brief + we can chat timelines and budget. Let me know — I’m ready to move fast if you’re a good fit
Market Maker
Technical Cofounder – Mobile App Lead (Equity Role)
Full time
Hybrid
Looking for a Tech Cofounder (Mobile App Developer)
Equity + Leadership Role | Remote | Africa-focused
We’re building something bold — a platform designed to empower everyday people through real-world commerce and daily utility. The concept is built, the community is growing, and the brand is already in motion. Now, we’re ready to build the MVP.
We’re looking for a technical cofounder — someone with the skill to build and the vision to lead.
What You’ll Own:
• Lead the mobile app development (Android-first; iOS optional for now)
• Build core features: user registration, listings, wallet logic, escrow integration, and payments
• Collaborate on product direction and tech decisions
• Scale with the company as a core part of the founding team
Ideal Experience:
• You’ve built marketplace-style or P2P mobile apps before
• You’re comfortable with payment APIs like Paystack, Flutterwave, or others
• You understand how to work with wallets, escrow flows, and multi-user platforms
• You’re not just a builder — you want to grow with a brand and own a meaningful slice of it
Your Role Is Not Freelance.
This is a cofounder opportunity — you’ll help shape the product, tech stack, and long-term vision. You’ll receive equity and work closely with the founding team to build a scalable African-first product.
Equity + Leadership Role | Remote | Africa-focused
We’re building something bold — a platform designed to empower everyday people through real-world commerce and daily utility. The concept is built, the community is growing, and the brand is already in motion. Now, we’re ready to build the MVP.
We’re looking for a technical cofounder — someone with the skill to build and the vision to lead.
What You’ll Own:
• Lead the mobile app development (Android-first; iOS optional for now)
• Build core features: user registration, listings, wallet logic, escrow integration, and payments
• Collaborate on product direction and tech decisions
• Scale with the company as a core part of the founding team
Ideal Experience:
• You’ve built marketplace-style or P2P mobile apps before
• You’re comfortable with payment APIs like Paystack, Flutterwave, or others
• You understand how to work with wallets, escrow flows, and multi-user platforms
• You’re not just a builder — you want to grow with a brand and own a meaningful slice of it
Your Role Is Not Freelance.
This is a cofounder opportunity — you’ll help shape the product, tech stack, and long-term vision. You’ll receive equity and work closely with the founding team to build a scalable African-first product.
Iron Key Capital
Venture Fellow (Part-Time, Remote)
Part time
Remote
About Iron Key Capital:
Iron Key Capital is an investment firm specializing in liquid and venture opportunities in the crypto space. We invest in pre-seed and seed-stage Web3 startups focused on enterprise adoption of utility-driven digital assets. Additionally, we operate a blockchain innovation lab and incubate startups within the Web3 infrastructure sector. Backed by 200+ LPs globally, Iron Key deploys over $1M annually.
Role Overview:
The Venture Fellow program is an 8-week, part-time, remote opportunity designed for individuals eager to develop their skills in venture capital and angel investing. Fellows will gain hands-on experience in early-stage investing, including deal sourcing, due diligence, and pitching investment opportunities.
This program is ideal for aspiring investors, founders, or professionals exploring a career shift into venture capital. Fellows will work closely with seasoned venture capitalists and gain access to Iron Key’s investor community to learn best practices in the field.
Key Responsibilities:
Identify and evaluate early-stage investment opportunities in the Web3 ecosystem.
Conduct market research and due diligence on potential investments.
Collaborate with the Iron Key team on deal sourcing and portfolio management.
Engage with investors and team members to develop investment strategies.
Contribute to thought leadership on topics related to venture capital and Web3 innovation.
Qualifications:
Strong analytical and problem-solving skills to evaluate investment opportunities.
Excellent communication and interpersonal skills for engaging with team members and stakeholders.
Experience in Web3, AI, or related technologies is preferred.
Involvement in startups, entrepreneurial ecosystems, or Web3 communities is a plus.
Aspiring to transition into venture capital or professionalize angel investing skills.
Bonus: Previous experience as a founder or working within early-stage startups.
Program Details:
Duration: 8 weeks (part-time)
Location: Remote
Compensation: Competitive, based on experience
How to Apply:
Submit your application through this link:
https://airtable.com/appfCDlkorF5FL3VZ/pagnjuRX1A7gZjBGc/form
Additional Information:
This program is designed to take the guesswork out of breaking into venture capital or professionalizing angel investing. Successful Fellows may have opportunities to advance into Venture Partner or Core Contributor roles at Iron Key.
Iron Key Capital is an investment firm specializing in liquid and venture opportunities in the crypto space. We invest in pre-seed and seed-stage Web3 startups focused on enterprise adoption of utility-driven digital assets. Additionally, we operate a blockchain innovation lab and incubate startups within the Web3 infrastructure sector. Backed by 200+ LPs globally, Iron Key deploys over $1M annually.
Role Overview:
The Venture Fellow program is an 8-week, part-time, remote opportunity designed for individuals eager to develop their skills in venture capital and angel investing. Fellows will gain hands-on experience in early-stage investing, including deal sourcing, due diligence, and pitching investment opportunities.
This program is ideal for aspiring investors, founders, or professionals exploring a career shift into venture capital. Fellows will work closely with seasoned venture capitalists and gain access to Iron Key’s investor community to learn best practices in the field.
Key Responsibilities:
Identify and evaluate early-stage investment opportunities in the Web3 ecosystem.
Conduct market research and due diligence on potential investments.
Collaborate with the Iron Key team on deal sourcing and portfolio management.
Engage with investors and team members to develop investment strategies.
Contribute to thought leadership on topics related to venture capital and Web3 innovation.
Qualifications:
Strong analytical and problem-solving skills to evaluate investment opportunities.
Excellent communication and interpersonal skills for engaging with team members and stakeholders.
Experience in Web3, AI, or related technologies is preferred.
Involvement in startups, entrepreneurial ecosystems, or Web3 communities is a plus.
Aspiring to transition into venture capital or professionalize angel investing skills.
Bonus: Previous experience as a founder or working within early-stage startups.
Program Details:
Duration: 8 weeks (part-time)
Location: Remote
Compensation: Competitive, based on experience
How to Apply:
Submit your application through this link:
https://airtable.com/appfCDlkorF5FL3VZ/pagnjuRX1A7gZjBGc/form
Additional Information:
This program is designed to take the guesswork out of breaking into venture capital or professionalizing angel investing. Successful Fellows may have opportunities to advance into Venture Partner or Core Contributor roles at Iron Key.
Iron Key Capital
Founder Fellow
Full time
Remote
Founder Fellow
📍 Remote | 3-Month Contract
🚀 About Iron Key & Iron Key Capital
Iron Key, backed by Iron Key Capital, is a venture community and investment firm focused on liquid and venture opportunities in crypto, Web3, and AI. Our mission is to invest in and support Pre-Seed and Seed-stage startups, equipping founders and investors with the tools and knowledge they need to succeed.
We operate a blockchain innovation lab and incubate startups in venture infrastructure, fintech, IP ownership, and application development. Iron Key Capital is backed by 200+ global LPs, deploying $1M+ annually into emerging opportunities.
📢 The Opportunity: Entrepreneur in Residence (EIR)
We are seeking a technical co-founder or EIR to help bring a newly incubated venture infrastructure product to market. This is a 3-month remote contract role, ideal for builders with Web3 and AI experience who want to launch a company with hands-on support.
Iron Key has developed proprietary AI tools for internal workflows and is exploring opportunities to externalize these as software-based consulting services or standalone software products. As an EIR, you’ll play a critical role in shaping, launching, and scaling these innovations.
🔹 Key Responsibilities
Lead Startup Development – Take an incubated idea from concept to market launch.
Drive Innovation – Bring your own venture idea or work on an existing Iron Key product.
Strategic Execution – Develop and implement growth strategies.
Hands-on AI & Web3 Work – Build and iterate on cutting-edge solutions in AI and blockchain.
Leverage Resources – Work alongside investors, advisors, and a global network to accelerate your startup.
🎯 What We’re Looking For
Proven entrepreneurial experience – Ideally, you’ve built a startup before (even if it failed).
Deep Web3 or AI expertise – Hands-on experience in AI, blockchain, or fintech is a must.
Strong problem-solving mindset – Ability to pivot, adapt, and execute in fast-changing environments.
Leadership & Vision – You’re a self-starter who can drive a business forward.
🔥 Why Join Iron Key?
Founder-Centric Program – Hands-on support to launch a company.
Unmatched Network – Access to top investors, mentors, and builders in crypto and AI.
Long-Term Value – Lifetime membership in the Iron Key community & alumni network.
Fundraising Support – Get exposure to global investors and funding opportunities.
📩 Apply Now
If you're ready to build and scale a new venture, apply here:
👉 https://airtable.com/appfCDlkorF5FL3VZ/paggWhwbIDwnmlzlK/form
📍 Remote | 3-Month Contract
🚀 About Iron Key & Iron Key Capital
Iron Key, backed by Iron Key Capital, is a venture community and investment firm focused on liquid and venture opportunities in crypto, Web3, and AI. Our mission is to invest in and support Pre-Seed and Seed-stage startups, equipping founders and investors with the tools and knowledge they need to succeed.
We operate a blockchain innovation lab and incubate startups in venture infrastructure, fintech, IP ownership, and application development. Iron Key Capital is backed by 200+ global LPs, deploying $1M+ annually into emerging opportunities.
📢 The Opportunity: Entrepreneur in Residence (EIR)
We are seeking a technical co-founder or EIR to help bring a newly incubated venture infrastructure product to market. This is a 3-month remote contract role, ideal for builders with Web3 and AI experience who want to launch a company with hands-on support.
Iron Key has developed proprietary AI tools for internal workflows and is exploring opportunities to externalize these as software-based consulting services or standalone software products. As an EIR, you’ll play a critical role in shaping, launching, and scaling these innovations.
🔹 Key Responsibilities
Lead Startup Development – Take an incubated idea from concept to market launch.
Drive Innovation – Bring your own venture idea or work on an existing Iron Key product.
Strategic Execution – Develop and implement growth strategies.
Hands-on AI & Web3 Work – Build and iterate on cutting-edge solutions in AI and blockchain.
Leverage Resources – Work alongside investors, advisors, and a global network to accelerate your startup.
🎯 What We’re Looking For
Proven entrepreneurial experience – Ideally, you’ve built a startup before (even if it failed).
Deep Web3 or AI expertise – Hands-on experience in AI, blockchain, or fintech is a must.
Strong problem-solving mindset – Ability to pivot, adapt, and execute in fast-changing environments.
Leadership & Vision – You’re a self-starter who can drive a business forward.
🔥 Why Join Iron Key?
Founder-Centric Program – Hands-on support to launch a company.
Unmatched Network – Access to top investors, mentors, and builders in crypto and AI.
Long-Term Value – Lifetime membership in the Iron Key community & alumni network.
Fundraising Support – Get exposure to global investors and funding opportunities.
📩 Apply Now
If you're ready to build and scale a new venture, apply here:
👉 https://airtable.com/appfCDlkorF5FL3VZ/paggWhwbIDwnmlzlK/form