Are you passionate about building secure, reliable, and cost-efficient cloud environments?

At Keycafe, we’re looking for a Security & DevOps Engineer to strengthen our production systems, automate infrastructure processes, and enhance our overall security posture. You’ll work across software, infrastructure, and compliance — ensuring our global IoT platform remains fast, reliable, and trusted by customers worldwide.

This is a high-impact role where you’ll streamline deployments, optimize resources, and guide the team in DevOps best practices — helping Keycafe scale efficiently while maintaining world-class security.

What You’ll Do

• Deploy and manage production application updates across environments.
• Monitor production performance metrics (query times, response times, system reliability).
• Track and investigate production errors through logging and telemetry systems.
• Manage and optimize IaaS accounts (Heroku, Cloudflare, and related cloud services).
• Continuously evaluate and reduce cloud resource costs.
• Support and maintain InfoSec compliance (SOC 2 and other relevant accreditations).
• Maintain clear, up-to-date documentation of infrastructure and security processes.
• Collaborate with developers to automate manual tasks and improve deployment pipelines.

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:

Senior Backend Engineer - Stablecoin Infrastructure

Location: Remote - Based in EST timezone

Compensation: $175K - $225K

We are a technology company building a full-service platform that transforms how money moves. Our mission is to make digital dollars the core of a new, global financial fabric—faster, more efficient, and universally accessible. We are creating foundational infrastructure that makes issuing, managing, and integrating stable, dollar-based value on-chain seamless for developers, fintechs, and institutions. We are backed by world-class investors and are growing a team to reimagine how value moves online.

We are seeking a Senior Backend Engineer to accelerate the delivery of both critical internal tooling and high-impact customer-facing products. You will join a small, high-performance team that applies the discipline of high-performance finance to a fast-moving, crypto-native startup environment.

In this role, you will:

CTO/Engineering Lead - Solana ZK Computation Framework

Location: Remote - North America/Asia preferred - Not a must though

Compensation: $200K - $225K

We are building the first Solana-native verifiable computation framework designed to accelerate the adoption of ZK technology and enhance Solana's vision for Internet Capital Markets. Our platform allows developers to outsource complex computations off-chain while generating cryptographic proofs that are verified on-chain. We provide a suite of developer tools and a prover network, currently supporting the RISC Zero zkVM. We are seeking a talented CTO/Engineering Lead to build and scale our engineering team.

As the technical leader, you will be critical in helping us shape the future of verifiable computation on Solana, ensuring we develop the most performant, scalable, and decentralized computation network. You will own the technical roadmap, culture, and architecture, driving our mission to add safety, verifiability, and trustlessness to the Solana ecosystem.

Key Responsibilities:

Software Engineer (Backend/AI)

Location: San Francisco, CA (100% On-site)

Compensation: $140,000 - $300,000 (Base Salary) + Significant Equity

We are a rapidly growing AI company that helps AI teams ingest real-world enterprise data with state-of-the-art accuracy. Our platform trains vision models and integrates LLMs to read unstructured documents (like PDFs and spreadsheets), enabling customers to build products and automate processes at scale. With rapid 7x YOY revenue growth and over $100M in funding, we are seeking a highly skilled Backend/AI Engineer to work on our core document processing API.

This is a high-agency, full-development-lifecycle role where you will build and optimize the core infrastructure that makes state-of-the-art document understanding accessible at scale for hundreds of companies, from startups to large enterprises.

The core work will include:

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:

Full Stack Engineer (AI-Native Compliance)

Location: New York, NY

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a rapidly growing AI startup building the next-generation compliance platform. Launched in April 2025, they have already crossed $1.2 million ARR with a small team by automating complex security and compliance processes (SOC 2, ISO, HIPAA, GDPR) using AI agents—turning months-long audits into days.

They are looking for a Full Stack Engineer who is hungry, highly technical, and ready to own features from concept to production. As an early engineer, you will work directly with the founders, shape core product decisions, and build the infrastructure necessary to scale the company toward nine figures.

What You'll Do

Senior Infrastructure Software Engineer (Medical AI Platform)

Location: Miami, Florida Employment Type: Full-time Work Arrangement: Hybrid (In the new Miami, FL office)

About the Role

Our client is the world's leading AI medical information platform, valued at $1 billion and backed by investors including Sequoia Capital and the Mayo Clinic. Their platform is used by healthcare providers worldwide to deliver accurate, sourced, and cited answers from peer-reviewed medical literature at the point of care.

They are seeking a Senior Infrastructure Software Engineer to join the Core Engineering team. This is a mission-critical role with significant technical scope and direct patient impact. You will architect and scale the entire infrastructure ecosystem, handling sensitive medical data at scale while ensuring the platform is both highly innovative and extremely reliable.

Responsibilities

Position Overview:

The Head of Engineering focuses on backend excellence, ensuring the implementation of high-end engineered solutions and serves as the principal technical authority on all backend engineering matters.

Requirements

Key Responsibilities

·      Lead the backend engineering team and establish technical direction

·      Define and implement backend architecture and best practices

·      Drive adoption of modern technologies (Node.js, MongoDB, Redis, AI)

·      Establish scalability, performance, and reliability standards

·      Review and approve critical backend design decisions

·      Mentor and develop backend engineering talent

·      Collaborate with other technical leaders to ensure end-to-end integration

·      Research and evaluate new backend technologies and approaches

Required Skills & Experience

·      8+ years of backend development experience

·      4+ years in a backend leadership role

·      Deep expertise in Node.js, MongoDB, Redis, and other backend technologies

·      Experience with applied AI/ML in production systems

·      Strong understanding of scalability, performance, and reliability engineering

·      Track record of building high-performance backend systems

·      Bachelor's degree in Computer Science or related field; Master's preferred

About Jobgether:

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Senior Software Engineer in Canada.

This is a unique opportunity to join a fast-growing, mission-driven team tackling the future of mineral exploration using cutting-edge AI and software. As a Senior Software Engineer, you will work directly with scientists and engineers to make mineral exploration data accessible and actionable, building impactful tools that are reshaping how discoveries are made. You’ll collaborate with a multidisciplinary team of geologists, data scientists, and engineers to deliver end-to-end solutions, from designing data pipelines to deploying production systems. The role is fully remote, with occasional opportunities to engage with field operations in places like Zambia, Canada, or the U.S.

Accountabilities: