Senior Software Engineer - Developer Tools & SDKs

Location: Remote - US & Americas

Compensation: $ Competitive

We are a fast-growing software company dedicated to supporting and developing an EVM-compatible, open-source, proof-of-stake platform. This public network is engineered for enterprise and Web3 applications, prioritizing speed, security, stability, and sustainability, and is governed by industry-leading organizations. We are seeking an experienced Software Engineer to lead the development of world-class developer tools and SDKs.

You will take the lead on crafting seamless developer experiences, owning the design, build, and maintenance of our open-source SDKs and related tooling. This role requires technical leadership, hands-on coding across multiple languages, and a strong focus on developer empathy. You will work cross-functionally to ensure our tools are intuitive, robust, and aligned with real-world developer needs.

What You'll Be Doing:

Senior/Lead EVM Engineer - Distributed Ledger Optimization

Location: Remote - US

Compensation: Competitive

We are a fast-growing software company dedicated to supporting and evolving a leading open-source, proof-of-stake distributed ledger platform. Our network is EVM-compatible and specifically engineered to meet the demands of enterprise and Web3 applications that require industry-leading speed, security, and sustainability.

We are looking for a Seasoned Java Engineer with deep blockchain protocol experience to join our Smart Contracts Team. In this role, you will be a key contributor to the evolution and optimization of our EVM implementation. You will work on a "plain Java" codebase (no heavy frameworks) where high performance, low latency, and high throughput are the baseline requirements.

Key Responsibilities:

Full-Stack Engineer, (AI)

Location: Based in the United States with the ability to work remote or from our Brooklyn office, LATAM or Europe.

Remote | Full-time

Compensation: $160K - $200K

Our client is a pioneer in automated, on-chain economic security systems, providing high-fidelity custom EVM simulations to protect and optimize decentralized finance (DeFi) protocols. Trusted by the industry’s leading platforms to secure and manage billions of dollars in assets, our client enables crypto protocols to refine risk management and capital efficiency through actionable, data-driven insights.

The organization is seeking a proactive and results-driven Full-Stack Engineer to join their AI division. Reporting directly to the Head of Product & AI, this individual will play a critical role in collaborating with the CEO and the AI team to develop a sophisticated financial AI agent. The ideal candidate thrives in high-velocity, self-directed environments and possesses the technical breadth to manage everything from scalable backend services to high-performance, user-facing interfaces.

Key Responsibilities

Software Engineer

Location: NYC (100% On-site in SoHo)

Compensation: $140,000 - $210,000 (Base Salary) + Competitive Equity

We are building the autonomous future of industrial staffing by developing fully autonomous, orchestrated multi-agent AI workflows to connect businesses with vetted workers. Backed by top-tier investors like Founders Fund and Khosla Ventures, our mission is to redefine labor management and drive the global supply chain to peak efficiency. We're seeking experienced and entrepreneurial Software Engineers to build our core suite of products across mobile and web.

You will join a dynamic team to build the foundational technology platform for both our workers and business customers. This role involves significant ownership, from product iteration to architectural design, in a fast-paced environment.

In this role, you will:

Senior Infrastructure Software Engineer

Location: Hybrid in Miami, Florida

Compensation: $200,000 - $250,000 (Base Salary) + Competitive Equity

We are the world's leading AI medical information platform, backed by top-tier investors and trusted by healthcare professionals at over 10,000 care centers worldwide. Our mission-critical platform powers medical AI used by healthcare providers globally. We are seeking a Senior Infrastructure Software Engineer to architect and scale our infrastructure ecosystem in a demanding, rapid-iteration environment.

As a key member of the Core Engineering team, you will have significant autonomy to make architectural decisions and drive initiatives across service reliability, data pipelines, and security for our large-scale medical AI platform.

Responsibilities:

Responsibilities: 

• Design, develop, execute and maintain comprehensive test plans and test cases based on strong understanding of the products 

• Perform functional, regression, performance, and user acceptance testing. 

• Identify, report, and track software defects and bugs. 

• Collaborate closely with developers, product owners, and other stakeholders to understand requirements and ensure high-quality deliverables. 

• Continuously improve the QA process and contribute to the overall product development lifecycle. 

Requirements

• Bachelor’s degree in Computer Science and Engineering, or information technology 

• 5+ years of experience in software quality assurance in the Tech industry 

• Strong understanding of software QA methodologies, tools, and processes. 

• Proficient in writing clear, concise, and comprehensive test plans and test cases. 

• Experience in Agile/Scrum development processes. 

• Excellent problem-solving skills and attention to detail. 

• Strong communication and collaboration skills. 

Preferred Qualifications: 

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:

The Data Visualization Engineer is responsible for transforming complex datasets into clear, engaging, and actionable visual insights. This role bridges the gap between data analytics and business decision-making by developing interactive dashboards, visual reports, and storytelling solutions that help stakeholders understand data patterns and trends effectively

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 our client — a tech company building logistics and mobility platforms. They’re looking for a Mobile Engineer (React Native) to create mobile tools that connect drivers, warehouse teams, and customers in real time.

🔧 Responsibilities

• Build and maintain mobile apps using React Native (Android/iOS)
• Integrate APIs and ensure smooth data flow between systems
• Collaborate with backend engineers and designers
• Optimize app performance, speed, and reliability
• Manage app release cycles and code reviews
• Develop cross-platform apps using React Native (iOS & Android).
• Integrate RESTful APIs with backend services.
• Improve app performance and user experience.

Requirements

• 3+ years in React Native mobile development
• Strong JavaScript/TypeScript skills
• Understanding of RESTful APIs and performance tuning

FlatGigs is hiring for a client building next-gen logistics dashboards and digital tools. As a Frontend Engineer (React), you’ll turn complex UI/UX designs into responsive, high-performance web experiences. You’ll work with APIs, build interactive dashboards, and ensure seamless user journeys across devices.

Key Responsibilities

• Develop modern UIs using React, TypeScript, and JavaScript
• Build dashboards for fleet tracking and logistics visibility
• Integrate APIs and real-time data visualization
• Optimize for performance, accessibility, and responsiveness
• Collaborate with backend and product teams for cohesive delivery
• Maintain clean, modular code and follow best practices

Requirements

• 3+ years of frontend experience with React
• Strong understanding of modern web architecture and design systems
• Familiarity with charting libraries and CI/CD workflows