Senior Infrastructure Engineer - Blockchain Wallet Backbone

Location: Remote - Location: United States (remote-first, office optional). EST time is preferred

Compensation: $180K - $300K

Join a stellar team of leaders and experts in blockchain technology, cryptography, and security. We are building the backbone of blockchain wallet infrastructure for the next financial era. We are seeking a Senior Infrastructure Engineer to design, operate, and scale systems at the intersection of blockchain, cybersecurity, and distributed infrastructure, preparing us to meet the demands of a trillion-dollar industry.

This role goes beyond maintenance—you will be an architect, automator, and security expert. You will embed best-in-class DevOps and SRE practices into our workflows, ensuring our services are highly reliable, secure, and cost-efficient. You will collaborate across engineering, product, and security to translate complex requirements into scalable infrastructure.

Key Responsibilities:

Senior Core Systems Engineer - Secure Wallet Infrastructure

Location: Remote - Location: US or EU (remote-first, office optional). Must be in the US, not Canada or in the European Union. France or Paris or as close as possible, always preferred.

Compensation: $180K - $260K

Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of blockchain wallet infrastructure for the next financial era. We are hiring a Senior Core Systems Engineer to design, build, and scale the low-level systems at the heart of our platform, where performance, security, and correctness are non-negotiable. This is a high-impact role focused on turning advanced cryptography into fast, resilient, and trusted production infrastructure.

As a Core Systems Engineer, you will work deep in the stack, designing and scaling reliable distributed services and integrating them with cloud, hardware, and blockchain environments. You will collaborate across product, research, and security to implement advanced cryptographic and security protocols using low-level systems languages.

Responsibilities:

GoMining is seeking a highly skilled Database Engineer to join our team and ensure the performance, scalability, and reliability of our databases. This role is ideal for someone passionate about data architecture, high-performance database systems, and large-scale analytics in fast-paced fintech and crypto environments.

You will play a critical role in designing database solutions, optimizing queries, managing replication, and ensuring data integrity.

Responsibilities:

Database Architecture & Design

• Design, implement, and optimize database schemas for high-performance applications.
• Develop strategies for data partitioning, replication, and scaling.
• Evaluate and implement new database technologies for performance and reliability.

Maintenance & Optimization

• Monitor database performance and implement query optimization, indexing, and caching strategies.
• Manage backup, restore, and disaster recovery plans.
• Conduct capacity planning and performance tuning for production workloads.

Collaboration & Support

Our team is searching for a skilled Middle Python Developer to strengthen our backend and help evolve our product architecture. You’ll work closely with experienced engineers, bring fresh ideas to the table, and take ownership of key components.

Your responsibilities will include:

• Writing, maintaining, and optimizing high-quality code;
• Analyzing the existing solution architecture and taking an active role in designing a new one;
• Leading a small team of two backend developers.

What we’re looking for:

• 3-4 years of experience in backend development with Python 3.x (FastAPI or Flask);
• Strong skills in designing and building RESTful APIs;
• Solid understanding of OOP principles, data structures, and algorithms;
• Hands-on experience with asynchronous programming (asyncio, aiohttp) and API integrations;
• Strong knowledge of SQL and experience with ORMs (SQLAlchemy or Django ORM);
• Practical experience with caching tools (Redis, Memcached) and database migrations;
• Good understanding of Docker, CI/CD pipelines, and version control (Git);
• Familiarity with cloud platforms (AWS, GCP, or Azure) and web servers (Nginx, Gunicorn, Uvicorn);
• Knowledge of design patterns, SOLID principles, and system design;
• Strong communication skills.

Our team is searching for a skilled Middle Python Developer to strengthen our backend and help evolve our product architecture. You’ll work closely with experienced engineers, bring fresh ideas to the table, and take ownership of key components.

Your responsibilities will include:

• Writing, maintaining, and optimizing high-quality code;
• Analyzing the existing solution architecture and taking an active role in designing a new one;
• Leading a small team of two backend developers.

What we’re looking for:

• 3-4 years of experience in backend development with Python 3.x (FastAPI or Flask);
• Strong skills in designing and building RESTful APIs;
• Solid understanding of OOP principles, data structures, and algorithms;
• Hands-on experience with asynchronous programming (asyncio, aiohttp) and API integrations;
• Strong knowledge of SQL and experience with ORMs (SQLAlchemy or Django ORM);
• Practical experience with caching tools (Redis, Memcached) and database migrations;
• Good understanding of Docker, CI/CD pipelines, and version control (Git);
• Familiarity with cloud platforms (AWS, GCP, or Azure) and web servers (Nginx, Gunicorn, Uvicorn);
• Knowledge of design patterns, SOLID principles, and system design;
• Strong communication skills.

Tiger Analytics is one of the fastest growing advanced analytics consulting and Engineering services firm. We are the trusted analytics partner for several Fortune 100 companies, enabling them to generate business value from data. Our consultants bring deep expertise in Data Science, Machine Learning and Al, and our engineers bring innovative engineering techniques to enable scalable data platforms and data products that are insights driven. Our business value and leadership has been recognized by various market research firms, including Forrester and Gartner.

The Technology Partner is a multi-faceted leadership role and part of Tiger’s core Data & Insights Solutions practice leadership. This role will be required to bring breadth and depth of technology expertise, founded in - experience with delivering large transformation, leading innovation driven practices, consulting to and managing executive stakeholders across IT and Business.

Requirements

Company Profile
AHOY is a leading technology firm focused on innovation and digital transformation. We specialize in developing scalable software solutions that empower businesses and enhance user experiences. Our diverse team is driven by a commitment to quality and excellence, providing an inclusive and dynamic workplace for tech enthusiasts to grow and thrive.

Position Overview
We are in search of a talented Senior Full Stack Developer to join our expanding team. The ideal candidate will be responsible for building high-performance applications and ensuring seamless integration of frontend and backend services. This role requires a solid understanding of modern web technologies and a passion for delivering exceptional user experiences.

Requirements

Key Responsibilities

Do you love building scalable backend systems that power real-world products?
We’re looking for a Backend Engineer to join our team at Ahoy and help us design secure, reliable, and high-performance platforms.

What you’ll do:
🔹 Build and maintain production-ready backend services
🔹 Design APIs and ensure system scalability & performance
🔹 Work with Node.js, TypeScript, and AWS (Lambda, DynamoDB, SQS, Cognito, etc.)
🔹 Collaborate with product, design, and cross-functional teams
🔹 Ensure quality through TDD, CI/CD, and clean architecture

What we’re looking for:
✅ 4+ years of backend development (Node.js/TypeScript)
✅ Strong experience with AWS and microservices
✅ Knowledge of SQL/NoSQL databases, REST/GraphQL APIs
✅ Passion for clean, maintainable, and secure code
✅ Startup or fast-paced environment experience is a plus

Come join us and help shape the future of tech at Ahoy 🚀

About the Role
We are seeking an experienced Staff Software Engineer to lead the design and delivery of secure, scalable backend systems. This is a hands-on leadership role with responsibilities spanning architecture, coding, and mentoring, while partnering closely with Product and cross-functional teams.

Key Responsibilities

• Design and build reliable, testable, production-ready backend services.
• Drive architectural decisions and own features end-to-end.
• Write clean, maintainable code with strong test coverage.
• Mentor engineers and set best practices across the team.
• Oversee system monitoring, incident response, and workflow improvements.
• Collaborate cross-functionally and contribute to hiring efforts.

Requirements

• 5+ years backend experience, 4+ years with Node.js & TypeScript.
• Strong expertise in AWS (Lambda, Cognito, S3, DynamoDB, SQS/SNS, CloudFormation).
• Experience with serverless, microservices, event-driven architectures.
• Skilled in TDD, CI/CD, REST/GraphQL APIs, secure coding.
• Proficiency in SQL and NoSQL databases.
• Startup/fast-paced environment experience preferred.

About Octopus by RTG
Octopus by RTG is the tech hiring and outsourcing arm of Robusta Technology Group, dedicated to connecting exceptional tech talent with top-tier organizations across the MENA, GCC, Europe, the US, and Canada. We specialize in building strong, long-term partnerships between skilled professionals and innovative companies. Our mission is to empower growth, innovation, and excellence by matching the right talent with the right opportunities.

Currently, we are hiring a Sr. Backend Developer for one of our partner organizations in KSA on a 1-year contract, offering the opportunity to contribute to exciting projects within a dynamic and forward-thinking environment.

Main Responsibilities

Backend Development & Architecture

• Design, develop, and maintain scalable, secure backend systems using Java and Spring Boot.
• Contribute to architecture design ensuring modularity, maintainability, and high performance.
• Build and manage microservices-based architectures.

API & Integration