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Senior Manager, Application Security

New RemoteAfrica, Europe, MENAContractSenior

Lead MetaMask's application security team across browser extensions, mobile apps, backend services, and smart contracts: set strategy and OKRs, manage a senior team, run threat modelling, secure code reviews, vulnerability management, bug bounty and pen testing, and strengthen the secure development lifecycle. Core stack includes TypeScript, JavaScript, Go, and Solidity.

Agentic AI AI API Authentication CI/CD +18 skills

remotestar-team

Senior Full-Stack Software Engineer / Technical Lead

Open 52d North AmericaFull-timeLead

Hands-on technical lead role at an early-stage, founder-led San Francisco team building consumer finance infrastructure for emerging markets (virtual banking, stablecoin/crypto wallets, cross-border payments). The engineer sets architecture and standards across a Python/FastAPI, React/TypeScript, PostgreSQL, and AWS stack while mentoring engineers.

Android API AWS CI/CD Cloud +13 skills

Senior Backend Engineer, Blockchain Infra, Scalable Equity

Rhinestone is hiring a Senior Backend Engineer in London to design the orchestration layer for its Omni Account off-chain infrastructure — a secure backend handling thousands of requests per second and coordinating solvers, locks, and security checks. The stack is Rust/Node/TS alongside Solidity smart contracts.

Rust Solidity TypeScript

Senior Backend Engineer, Dev Tooling & Offchain Web3

Senior Backend Engineer at Rhinestone in London, owning developer tooling, offchain services, and a developer-facing platform. Day to day: shipping production backend code, reviewing peers' work, and building scalable infrastructure across a traditional software stack integrated with EVM contracts to power wallet-native UX.

Dabster Systems Ireland Limited

Java Developer (Blockchain)

Contract Java developer (hybrid in London) building enterprise backend services, APIs, and microservices for a digital-asset/blockchain platform — smart contract interactions, minting and burning, asset transfers, wallet management, and custody/network integrations — to banking-grade security and reliability standards.

Agile API Blockchain DevOps Java +4 skills

Software Developer

Open 67d UK Canada LMIA employer

Design and develop ultra-low-latency trading systems and data platforms using C++, Java, or Python. You will work on the full tech stack—from hardware and software development to grid computing—to build algorithmic trading, risk analysis, and simulation tools.

Accessibility C++ Java OOP Python +1 skills

Elnakeeb Pty Ltd.

Senior Backend Engineer

New RemoteAPACSenior

Senior backend engineer owning core services and APIs end to end for a social investing platform — social feeds, paper/live/copy trading. Day to day: build TypeScript/Node.js services, WebSockets and HTTP APIs, Kafka event pipelines, and PostgreSQL queries, plus Redis/Valkey caching, PR reviews, and incident debugging.

API Api Design Event Driven Architecture Fintech Kafka +6 skills

120K – 125K AUD

Senior Manager, Platform Engineering

Open 89d EuropeSenior

Leads Platform Engineering and SRE teams in Ireland to build scalable, self-service cloud infrastructure, enforce 99.999% SLOs, and implement OpenTelemetry-based observability for Prove’s identity platform.

Argo CD Authentication Automation AWS CI/CD +20 skills

120K – 140K €

Senior Full-Stack Engineer for Blockchain Data & Web3

New North AmericaSenior

Design, develop, and deploy web applications and Go backends for blockchain data processing at StreamingFast, a core contributor to The Graph. Day to day you'll dig into protocols and distributed data systems across blockchains, collaborating with senior engineers on tough technical challenges.

Backend Engineering Lead (Go; Compliance)

New HybridAPAC, UKLead

Hands-on Engineering Lead building and scaling kastcard's Compliance & Risk Platform: backend services and APIs in Go powering KYC/KYB, transaction monitoring, sanctions screening, and internal risk tooling. Owns technical architecture, mentors engineers, and works with compliance, risk, and product teams to turn regulatory requirements into scalable, auditable systems.

API Automation AWS Cloud Distributed Systems +9 skills

Tether Operations Limited

Frontend Desktop Engineer (100% Remote - Worldwide)

Frontend Desktop Engineer builds and maintains Keet Desktop, Tether's cross-platform P2P communications app running on the Pear runtime. Day to day: UI/UX implementation, state management, testing/debugging, and performance optimization. Core stack: React/Preact, JavaScript/TypeScript, Redux/Zustand.

AI API Blockchain Distributed Systems Fintech +10 skills

Senior .Net Back-End Engineer

Open 53d HybridMENASenior

Senior backend engineer at Cross River's Jerusalem R&D center designing and building scalable, reliable .NET services (C#, .NET 6, SQL Server, RabbitMQ, Docker, AWS) that power mission-critical fintech products such as payments and lending. Hybrid role requiring 3 days a week in the office.

API AWS Blockchain Cloud C# +11 skills

Fullstack Engineer - AgenticOps (100% Remote)

United Arab Emirates

Fullstack engineer on Tether's AgenticOps team building developer tooling and AI-agent-driven automation for QVAC desktop/mobile app teams: integrating AI agents into CI workflows, automating PR reviews, code-quality checks, and build/release pipelines. Core stack is JavaScript/TypeScript, Node.js, Git, and CI/CD.

Agentic AI AI Automation Blockchain CI/CD +6 skills

Fullstack Engineer – AgenticOps (100% Remote)

United Arab Emirates

Fullstack engineer on the AgenticOps team building developer tooling and integrating AI agents into engineering workflows — CI agents that investigate failures, automated PR reviews, and code-quality checks. Core stack: Node.js, Git, CI/CD, automated testing, and AI coding tools/agents.

Agentic AI AI Automation Blockchain CI/CD +3 skills

Tether Operations Limited

Fullstack Engineer - AgenticOps

United Arab Emirates

Fullstack engineer on Tether's QVAC team building developer tooling and AI-agent automation for engineering workflows: agents in CI that investigate failures, automated PR reviews, code-quality checks, and improved build/release pipelines. Core stack is JavaScript/TypeScript, Node.js, Git and CI/CD, focused on desktop and mobile apps.

Agentic AI AI Automation CI/CD Git +4 skills

TOKENINSIGHT SG PTE. LTD.

Senior Full-Stack Engineer: Build Scalable Web Apps

TokenInsight SG is hiring a Senior Full-Stack Engineer in Singapore to build scalable, high-performance web applications and backend services. The role spans the full software development lifecycle: frontend and backend feature development, automated testing, and contributing to architecture and engineering best practices.

Test Automation

WOTRANSFER PTE. LTD.

Java Backend Engineer - FinTech & Payments

Design, develop, and maintain high-performance, scalable backend services for a global FinTech company's cross-border payments and digital assets products. Core stack is Java/JVM with Spring Boot and distributed systems, plus optimizing MySQL, Redis, MongoDB, and APIs.

API Distributed Systems Fintech Java JVM +5 skills

DevOps Engineer

DevOps Engineer at Native, a CLOB DEX for on-chain spot liquidity, designing and managing scalable, high-availability AWS infrastructure for 24/7 trading systems. Day-to-day involves Terraform, Docker/Kubernetes orchestration, CI/CD optimization (Bitbucket Pipelines), and monitoring/incident response with Grafana and AWS CloudWatch.

AWS Bitbucket CI/CD Cloud CloudWatch +6 skills

Senior Data Engineer

Builds and maintains Bybit's data platform: big data pipelines, analytics dashboards and governance for compliance/trading teams, plus AI-driven data agents and web-scraping/procured-data ingestion. Core stack: Python, SQL, Spark/Hadoop, OLAP engines (ClickHouse/Doris/StarRocks/Presto), Java, Docker/Kubernetes.

AI Analytics Anomaly Detection API Automation +30 skills

Bullish HK Limited

Lead Software Engineer, Clearing Engineering

On-siteNorth AmericaLead

Lead engineer on Bullish's Clearing Engineering team, building mission-critical clearing and risk infrastructure for a regulated digital asset exchange — high-performance risk systems, market-data ingestion, netting and settlement tooling in Java on a cloud-native stack. Based in New York, collaborating with global teams (HK, NY).

Airflow Analytics AWS Big Data BigQuery +27 skills

235K – 275K $