Senior Software Engineer (Backend, AI Infrastructure)

Location: Remote - US only

Compensation: $180K - $300K

We build mission-critical infrastructure that delivers massive amounts of public web data to the companies training the world’s most powerful AI models. Our unique architecture leverages a massive, distributed bandwidth-sharing network to operate a large-scale global crawler, granting us access to high-quality public web data at scale. On top of this, we've built complex pipelines for ingesting, segmenting, and annotating billions of files, including videos, transcripts, and audio, empowering frontier AI labs with essential datasets.

We are a lean, technical team that moves fast, prioritizing high output and low ego. We are seeking a Senior Software Engineer (Backend) with deep expertise to architect scalable solutions and drive technical excellence as we push the boundaries of open web data and AI.

You will join a small, talented team to lead the design and implementation of highly scalable backend systems. Your expertise will be crucial in ensuring the robustness and maintainability of the infrastructure that supports our massive distributed crawler and data processing pipelines. You will play a critical role in shaping the evolution of the internet's role in AI development.

What You'll Be Doing

Senior Software Engineer (Full Stack, Functional)

Full-time

Remote (US/NY Overlap Required)

We are an early-stage company building a comprehensive online community platform from first principles. We are looking for a highly autonomous Senior Software Engineer to be a foundational member of our engineering team, contributing significantly to product direction and building scalable systems.

As a Senior Software Engineer, you'll be a generalist responsible for the entire feature lifecycle, from scoping and architecture to production deployment and scaling. You will primarily work with TypeScript and functional programming patterns to create high-quality, maintainable code.

What you'll do:

Software Engineer - AI & Legal Tech Transformation

Location: Hybrid - New York

Compensation: $160,000 – $250,000

We are a fast-growing legal technology company, founded by a mix of legal operators and tech veterans from top-tier companies, focused on solving high-impact problems in the legal world. We are turning chaos—repetitive tasks, paper-based bottlenecks, and data fragmentation—into clarity using well-designed systems, AI, and thoughtful software. We are seeking a Software Engineer to own critical features end-to-end and influence our engineering culture from the ground up.

You will be responsible for building fast, shipping often, and partnering closely with cross-functional teams (product, ops, design, and legal experts). This role demands high ownership, requiring you to manage the full feature lifecycle from architecture design to production release. You must move quickly without sacrificing quality, integrating safety, observability, and performance from the start.

What you’ll do:

Founding Software Engineer - AI Evaluation & Data Infrastructure

Location: San Francisco

compensation: $150K - $240K

We are building the most complex infrastructure that powers frontier data creation for agentic and hard reasoning workflows, helping push the frontier of LLMs and AI Agents. We work with all 5 of the leading AI labs and are experiencing sharp hockey stick growth. We are seeking a Founding Software Engineer with end-to-end ownership to build the systems that power data and evaluation for the next generation of AI.

This is a dynamic, high-impact role that offers immense breadth of ownership over projects that push the frontier of AI evaluation. You will move fluidly across the entire stack, from research prototyping to distributed cloud infrastructure and user-facing analytics. You must be comfortable with constant context switching and relentless shipping in a talent-dense environment.

What You’ll Do:

About us:

At Motia, we’re at the forefront of fleet solutions, providing innovative services that power businesses across the UK. We’re committed to creating an environment where everyone can thrive. Our culture fosters collaboration, innovation, and growth, ensuring you can build a career, not just a job. With over 300 employees across five offices, we support over 50,000 customers nationwide.

Position Overview

Reporting to the Lead Software Developer, the Junior Developer role is a hands-on development role contributing to Motia applications and services. Working with experienced developers, this role will contribute to developing, testing and maintaining real world software solutions with a focus on industry leading customer experience.

Duties & Responsibilities

Senior Software Engineer - Cross-Chain Intent-Driven DEX

Headquarters: Gibraltar

Remote | Full-time

Compensation:  $250k - $280k total comp ($160K - $180K base pay + tokens 2y vesting, 1y cliff + 10% perf bonus)

Our client is a pioneering technology firm developing advanced solutions to enable seamless cross-chain interactions within an automated, intent-driven world. By connecting AI, services, and financial applications, the organization designs intent-driven liquidity layers where smart contracts, AI agents, and blockchain networks synchronize in real-time. With deep expertise in AI, cryptography, and decentralized finance (DeFi), the team is redefining how intelligent agents interact across global networks.

Senior Fullstack Engineer - Web3 User Acquisition Platform

Location: Remote - US (EST Preferred)

Compensation: $150K - $200K

We are a leading web3 user acquisition platform that has powered user onboarding for over 500 protocols since 2021, facilitating over 500 million transactions and serving over 3 million users across 40+ chains. Our platform, which includes gamified activations and unique on-chain credentials, is infrastructure for major players across DeFi, gaming, AI, and NFT ecosystems. Backed by $21M in total funding, we are seeking a highly experienced Senior Fullstack Engineer to own end-to-end feature delivery across our core platform and new initiatives.

In this high-impact role, you will take full ownership of major product features from conception through deployment. You will be instrumental in driving architectural decisions for both frontend and backend systems, ensuring performance and scalability across our complex, multi-chain platform. You will collaborate directly with the Head of Product and Founders to shape product strategy, establish best practices, and mentor other engineers.

Key Responsibilities:

We are looking for a motivated and proactive JavaScript Developer to join our Support & Hands History team. You’ll be working on existing game titles built with PixiJS — supporting, maintaining, and enhancing them, while also collaborating closely on the development and evolution of our internal game library.

Requirements

• At least 1.5 years of commercial experience in JavaScript / Frontend development;
• Hands-on experience with PixiJS — commercial or non-commercial (e.g. pet projects, game jams, educational demos);
• Proven experience working with animations, including: Pixi-Spine, Animated Sprite, animation libraries (e.g. GSAP);
• Experience with version control systems (Git) and understanding of CI/CD processes;
• Experience working with texture generation tools or texture atlases;
• Understanding of game performance optimization and browser debugging;
• Languages: Ukrainian — required; English — B1 level or higher.

FlatGigs is hiring for a client developing logistics and operations tech solutions. As a Backend Engineer (Django), you’ll build reliable APIs, manage databases, and ensure system performance and security. You’ll collaborate closely with frontend and mobile developers to deliver scalable, efficient products that simplify real-world logistics.

Key Responsibilities

• Develop backend services using Python (Django)
• Build and maintain RESTful APIs
• Manage PostgreSQL databases
• Optimize performance and reliability
• Collaborate on CI/CD and version control with Git/Docker
• Write clean, secure, maintainable code

Requirements

• 3+ years of Django experience
• Strong understanding of API design and security
• Excellent problem-solving and communication skills

Robusta Technology Group (RTG) is a key driver of digital transformation by providing a holistic tech ecosystem. RTG works with its local and international partners to help build digital customer experiences, establish engineering hubs and build ventures across multiple industries and domains. In this pursuit, RTG serves as a catalyst for impact and growth through events, spaces and content focused on creating impact and growth across the different interactions.

Octopus is proud to be part of the Robusta Technology Group (RTG), a leading tech consultancy group. With a decade of experience and a successful track record of delivering over 300 projects across Europe, the Middle East, and North America, RTG has established itself as a preferred employer in the Egyptian market. Octopus and Robusta are building a bridge between Europe and Africa, creating tailored hub solutions to connect companies with top talent across the globe.

Job Overview