We are building an ecosystem that combines mining, payments, Bitcoin finance, and education and making it simple and secure for users worldwide to earn and use Bitcoin daily.

We are looking for a Senior / Lead Backend Developer who can take ownership of complex backend systems, drive architectural decisions, and build scalable fintech infrastructure.

Responsibilities

• Lead development of a cryptocurrency payment gateway and related financial services
• Design and implement high-load, scalable backend architectures
• Own integration and orchestration of multiple third-party payment providers
• Drive technical decisions and architecture design across services
• Build and maintain microservices infrastructure with clear separation of concerns
• Optimize system performance under heavy load (latency, throughput, fault tolerance)
• Participate in system design, data modeling, and load calculations
• Collaborate with product, DevOps, and other teams to deliver reliable solutions
• Mentor engineers and influence engineering standards and best practices

Requirements

Location: New York, United States • London, United Kingdom (Hybrid)

Hybrid/Remote | Full-time

Compensation: $150K - $180K

We are hiring on behalf of our client who is a leading innovator in the blockchain space, dedicated to building decentralized products that empower a people-powered internet. They are responsible for a suite of decentralized finance (DeFi) tools, including a major liquidity protocol and a native stablecoin. The organization prides itself on a thriving, collaborative, and global culture where diverse perspectives are celebrated.

The Growth Relations Manager will be a pivotal hire responsible for driving liquidity growth by building and managing relationships with high-value liquidity providers (LPs), ranging from institutional funds to on-chain native capital. This is a highly strategic, externally facing role that blends relationship management with deep on-chain fluency. The successful candidate will identify key allocators, craft tailored value propositions, and support the optimization of capital deployment to increase Total Value Locked (TVL).

Key Responsibilities

We are seeking a highly organized and execution-driven Project Manager to oversee the operational delivery of outsourcing and recruitment projects. This role focuses on ensuring delivery excellence, enforcing process compliance, and enabling commercial operations readiness to support revenue realization.

The ideal candidate will have strong coordination skills, attention to detail, and the ability to manage multiple workflows while maintaining high operational accuracy.

Who we are?

SupportYourApp is a global Intelligent Support-as-a-Service leader, partnering with tech companies and industry leaders like MasterCard, Calm and MacPaw in 30+ countries since 2010 to deliver secure customer and technical support. We operate globally, supporting clients in 60 languages across diverse industries. So what if you had a chance to be a part of the world’s leading SaaS, software, or hardware solutions?

Join our community as a Technical Support Consultant today and thrive in a multicultural and multilingual environment while enjoying your home office. Unlock your potential by mastering new skills and achieving challenging goals in cooperation with our People First management approach. Excited? Let’s see what it takes.

What you will do:

About LawnStarter

LawnStarter is the nation's leading on-demand marketplace for lawn care and outdoor services, with over $100M in annual bookings. We're expanding beyond lawn care to become the one-stop shop for all home services, and paid social is one of our next major bets to scale both customer and provider acquisition across both sides of the marketplace.

About Growth at LawnStarter

Growth is where LawnStarter's customer and provider acquisition engine gets built. We own organic, paid, and partner channels and work cross-functionally with lifecycle and sales to maximize funnel conversion. Paid social is a high-potential channel for us: we've proven it can work, but we haven't had a dedicated owner to turn it into a scalable, predictable growth lever. That's the opportunity.

Requirements

The Role

You'll own paid social acquisition for both sides of LawnStarter's marketplace — homeowners and service providers — across multiple markets and service categories while keeping spend profitable on each side.

The core channels are Meta, TikTok, and YouTube. Over time, this role could extend to interrupt channels like streaming (Hulu, connected TV) and other push formats.

Who we are?

SupportYourApp is a global Intelligent Support-as-a-Service leader, partnering with tech companies and industry leaders like MasterCard, Calm and MacPaw in 30+ countries since 2010 to deliver secure customer and technical support. We operate globally, supporting clients in 60 languages across diverse industries. So what if you had a chance to be a part of the world’s leading SaaS, software, or hardware solutions?

Join our community as a Technical Support Engineer today and thrive in a multicultural and multilingual environment while enjoying your home office. Unlock your potential by mastering new skills and achieving challenging goals in cooperation with our People First management approach. Excited? Let’s see what it takes.

What you will do:

Who are we?

SupportYourApp is a global Intelligent Support-as-a-Service leader, partnering with tech companies in 30+ countries since 2010 to deliver secure customer and technical support. What if you had a chance to be a part of the world's leading hardware, software, or SaaS solutions? 

Join our team as an Account Manager and take ownership of a key client relationship.

You will work closely with our leadership team, including the Chief Customer Officer , and be responsible for navigating complex client expectations, aligning priorities, and driving constructive, solution-focused conversations.

This role requires strong stakeholder management skills, cultural awareness, and the ability to build trust in high-pressure environments, while developing a deep understanding of both the technical and business aspects of the client’s product.

If you enjoy owning challenging client relationships and turning complexity into structure — let’s see what it takes 💛

What you will do:

Who are we?

SupportYourApp is a global Intelligent Support-as-a-Service leader, partnering with tech companies in 30+ countries since 2010 to deliver secure customer and technical support. What if you had a chance to be a part of the world's leading hardware, software, or SaaS solutions? 

Join our team as an Account Manager and take ownership of a key client relationship.

You will work closely with our leadership team, including the Chief Customer Officer , and be responsible for navigating complex client expectations, aligning priorities, and driving constructive, solution-focused conversations.

This role requires strong stakeholder management skills, cultural awareness, and the ability to build trust in high-pressure environments, while developing a deep understanding of both the technical and business aspects of the client’s product.

If you enjoy owning challenging client relationships and turning complexity into structure — let’s see what it takes 💛

What you will do:

Who are we?

SupportYourApp is a global Intelligent Support-as-a-Service leader, partnering with tech companies in 30+ countries since 2010 to deliver secure customer and technical support. What if you had a chance to be a part of the world's leading hardware, software, or SaaS solutions? 

Join our team as an Account Manager and take ownership of a key client relationship.

You will work closely with our leadership team, including the Chief Customer Officer , and be responsible for navigating complex client expectations, aligning priorities, and driving constructive, solution-focused conversations.

This role requires strong stakeholder management skills, cultural awareness, and the ability to build trust in high-pressure environments, while developing a deep understanding of both the technical and business aspects of the client’s product.

If you enjoy owning challenging client relationships and turning complexity into structure — let’s see what it takes 💛

What you will do:

Who are we?

SupportYourApp is a global Intelligent Support-as-a-Service leader, partnering with tech companies in 30+ countries since 2010 to deliver secure customer and technical support. What if you had a chance to be a part of the world's leading hardware, software, or SaaS solutions? 

Join our team as an Account Manager and take ownership of a key client relationship.

You will work closely with our leadership team, including the Chief Customer Officer , and be responsible for navigating complex client expectations, aligning priorities, and driving constructive, solution-focused conversations.

This role requires strong stakeholder management skills, cultural awareness, and the ability to build trust in high-pressure environments, while developing a deep understanding of both the technical and business aspects of the client’s product.

If you enjoy owning challenging client relationships and turning complexity into structure — let’s see what it takes 💛

What you will do: