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/Lead Backend Engineer - FinTech & Crypto Innovation

Location: Remote - Fully remote across Europe - they can do B2B or hire through EoR.

Compensation: $120K - $140K

We are seeking a Senior/Lead Backend Engineer to help us revolutionize the FinTech and crypto industry. This is a fast-paced environment where you will solve complex banking and crypto problems, translating them into elegant, efficient, and resilient architectural solutions. Your ability to deliver high-quality code makes you a pillar of our engineering team.

You will work directly with the product team, owning the design, development, and deployment of mission-critical services that power our next-generation financial platform. Your focus will be on building highly scalable and resilient backend systems that handle core banking functions, blockchain integrations, and serve data to our applications.

What You'll Be Working On:

Senior/Lead Backend Engineer - FinTech & Crypto Innovation

Location: Remote - Fully remote across Europe - they can do B2B or hire through EoR.

Compensation: $120K - $140K

We are looking for a Senior/Lead Backend Engineer obsessed with good architecture, efficiency, and resilience to help us revolutionize the FinTech and crypto industry. This role is for a pillar of our engineering team who thrives in a fast-paced environment, solving complex banking and crypto problems with speed and elegant, resilient solutions.

You will work directly with the product team, owning the design, development, and deployment of mission-critical services that power our next-generation financial platform. Your focus will be on building scalable, robust backend systems that handle core banking functions, blockchain integrations, and serve data to our mobile and web applications.

What You'll Be Working On:

Senior/Lead Backend Engineer - FinTech/Crypto

location: Remote - Fully remote across Europe - they can do B2B or hire through EoR.

compensation: $115K - $130K

We are seeking a Senior/Lead Backend Engineer to join our team dedicated to revolutionizing the FinTech and crypto industries. You will be a pillar of our engineering team, working directly with the product team to solve complex banking and crypto problems. This role requires an obsession with robust architecture, efficiency, and resilience, and a commitment to delivering the most elegant solutions and the best product for our customers.

This is a fast-paced, high-impact role where your speed, ability to deliver, and capacity for elegant problem-solving will be critical. You will be responsible for building the core services that drive our new paradigm in finance.

What you’ll be working on:

Founding Full Stack Software Engineer (Backend/AI Focus)

Location: Los Angeles, CA (100% On-site)

Compensation: $170,000 - $225,000 (Base Salary) + Significant Equity

We are an early-stage, YC-backed company building fully autonomous AI agents powered by in-house models that can find, exploit, and patch complex vulnerabilities in web applications at massive scale. We are seeking a passionate Founding Full Stack Software Engineer to build and scale the core systems. This is a high-impact role with a focus on backend architecture and AI agent systems, directly addressing the speed and scale challenges posed by AI-generated code.

As a Founding Engineer, you will have significant responsibility for designing, developing, and maintaining our scalable, high-performance web applications and cutting-edge AI Agent systems. Your focus will be on the backend and AI components.

Key Responsibilities:

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 looking for a skilled and innovative Machine Learning Engineer with hands-on experience in Google Cloud Platform (GCP) and Vertex AI to design, build, and deploy scalable ML solutions. You will play a key role in operationalizing machine learning models and driving the end-to-end ML lifecycle, from data ingestion to model serving and monitoring.

Key Responsibilities:

Member of Technical Staff (Platform Development, Construction Tech)

Location: San Francisco, CA

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a rapidly scaling construction work efficiency platform, leveraging wearable cameras and cutting-edge AI vision models to analyze on-site productivity. They are tackling the $1.6 trillion annual productivity loss in the construction industry by building tools that help teams save on labor costs and improve safety. The company has secured a $5 million seed round and is scaling rapidly toward its Series A.

They are seeking an exceptional Member of Technical Staff to build and scale core platform features that transform how construction teams manage safety, productivity, and workforce development for their frontline craftworkers. This is a high-impact, hands-on coding role where you'll own critical initiatives.

What You'll Build & Solve

You will be responsible for building complex, scalable workforce management systems and intuitive user interfaces for non-technical users in the field:

Position Overview
AHOY is seeking a Staff Node.js Backend Developer to join our remote team. In this role, you will lead the design and development of robust backend solutions that power our applications. You will have a significant impact on our technology stack and architecture while working with a talented team of engineers.

Key Responsibilities:

• Design, develop, and maintain scalable and high-performance backend services with Node.js.
• Architect and implement complex features and improvements in our existing applications.
• Collaborate with product managers and frontend developers to create seamless integrations.
• Mentor and guide junior developers through code reviews and architecture discussions.
• Ensure code quality through testing, monitoring, and adherence to best practices.
• Stay up-to-date with emerging technologies and industry trends to continuously improve our systems.

Requirements

Requirements: