Referso Jobs

Senior Regulatory & Commercial Lawyer

Smarter Corp · Posted Nov 11, 2026

Open

Remote, Cyprus
Remote
Full-time · Senior
5+ years

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Senior Regulatory & Commercial Lawyer

Smarter Corp · Posted Nov 11, 2026

Open

Remote, Cyprus
Remote
Full-time · Senior
5+ years

Apply with Referso

Technical Customer Support - US

Hypernative · Posted Nov 10, 2026

Open

Remote, United States
Remote
Full-time · Mid
3–5 years

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We are looking for a Technical Customer Support Specialist to be the front line for our customers, helping them get the most out of Hypernative’s real-time threat detection platform.

Responsibilities

Serve as the first line of technical support, managing customer tickets and chats in a timely and professional manner.
Troubleshoot product, integration, and alerting issues, identify root causes, and escalate complex cases when needed.
Partner with the Customer Success and Engineering teams to track, reproduce, and resolve technical incidents.
Help customers integrate and configure Hypernative APIs, dashboards, and data feeds.
Maintain and improve support documentation, FAQs, and self-service resources.

Requirements

Nice to have: Python

Skills

Technical customer support DevOps support API-based product support Troubleshooting Diagnostic skills Web3

Software Engineer-1

Coinbase · Posted Nov 9, 2026

Open

Remote, United States
Remote
Full-time
$152K–$179K per year
2+ years

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Build backend systems, infrastructure, and APIs for stablecoin-based payments within Coinbase’s global payments platform.

Compensation

Annual base salary range (excluding equity and bonus): $152,405—$179,300 USD

Responsibilities

Own key projects end-to-end as the Directly Responsible Individual
Build backend systems, infrastructure, and internal/external APIs
Partner with Product, Design, Infrastructure, and Compliance to translate requirements into robust, scalable solutions
Execute performance, scalability, and reliability improvements across distributed systems
Support the team's engineering quality through code reviews, architectural best practices, and contributing to patterns

Skills

Go Java AWS GCP distributed systems APIs blockchain crypto

Senior Offensive Security Penetration Tester - Crypto and Digital Assets, Senior Vice President

Citi · Posted Nov 6, 2026

Open

Singapore, Singapore, Singapore
Full-time · Vp
3+ years

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This team specializes in conducting various types of penetration testing engagements (full end-to-end white-box and/or grey-box testing) against a variety of Citi owned or 3rd party SaaS applications leveraging blockchain, digital assets, and traditional frameworks.

Responsibilities

Plan, scope, and execute comprehensive penetration tests against blockchain networks, smart contracts, decentralized finance (DeFi) protocols, and digital asset custody systems.
Perform manual and automated source code reviews of smart contracts written in Solidity, Rust, Go, or Vyper to identify logic flaws, reentrancy, front-running, flash loan vulnerabilities, and integer overflows.
Act as a subject matter expert in offensive information security performing dynamic and manual security assessments on web technologies such as APIs, JavaScript Frameworks, Artificial Intelligence, and Distributed Ledger Technologies.
Drive remediation by outlining a defense-in-depth approach to business stakeholders and providing strategic solutions to developers on effective preventive and detective security controls.
Have strong technical writing and presentation skills to report and articulate the vulnerability assessment results to any audience.

Requirements

Master's Degree
PhD
Bachelor's Degree
Nice to have: BSCP
Nice to have: GWAPT

Skills

penetration testing

Director, Operational Excellence and Innovation

Citadel Credit Union · Posted Nov 6, 2026

Open

Director
7+ years

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A visionary leadership role focused on process improvement within the Experience & Retail team, integrating technologies like blockchain, smart contracts, and AI to modernize workflows and drive efficiency.

Responsibilities

Lead the design and implementation of emerging technologies to include blockchain and AI-powered automation solutions for retail operations
Act as liaison and collaborate with various lines of business, including EPMO, Digital & Transformation, and Retail Operations & Support
Coordinate testing and implementation of branch technology and compliance
Act as liaison between the team and internal/external partners to ensure successful deployment of system upgrades and enhancements
Manage team related vendor relationships

Requirements

Bachelor's degree
MBA or advanced degree (plus)
Nice to have: Knowledge of UTAUT model
Nice to have: TPB model
Nice to have: TAM model

Skills

process improvement project management technology implementation blockchain/DLT

Software Engineer Full Stack

knowmad mood · Posted Sep 25, 2026

Open

Madrid, Madrid, Spain
Hybrid
Full-time

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Full Stack Software Engineer with experience in Java/Spring Boot, Angular, blockchain, and AI tools, working in a hybrid model in Madrid.

Responsibilities

Design, develop and evolve end-to-end digital solutions
Integrate APIs and distributed applications
Apply blockchain and AI technologies to software development

Skills

Java Spring Boot Angular API integration Blockchain DLT Tokenization Custodia de activos digitales Identidad digital Smart contracts CI/CD Agile

Asset/Wallet Operations

Bybit · Posted Nov 6, 2026

Open

Abu Dhabi, Abu Dhabi, United Arab Emirates +1 more
3+ years

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Asset/Wallet Operations Specialist overseeing digital wallet administration and security.

Locations (2)

Abu Dhabi, Abu Dhabi, United Arab Emirates
Hong Kong, China

Responsibilities

Operate, manage, and administer hot/warm/cold wallets
Execute and oversee cryptocurrency transactions
Manage wallet rebalancing
Facilitate cross-chain transactions
Reconcile wallet balances

Requirements

Bachelor’s degree in Finance, Computer Science, Information Technology, or related field
Nice to have: Mandarin Chinese

Skills

wallet operations custody hot/warm/cold wallets

Senior Offensive Security Penetration Tester - Crypto and Digital Assets, Senior Vice President

Citi · Posted Nov 6, 2026

Open

Singapore, Singapore
Full-time · Senior
3+ years

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Lead offensive security penetration testing for blockchain, digital assets, and smart contract environments at Citi, ensuring enterprise-scale security across cloud and AI-driven applications.

Responsibilities

Plan, scope, and execute comprehensive penetration tests against blockchain networks, smart contracts, decentralized finance protocols, and digital asset custody systems.
Perform manual and automated source code reviews of smart contracts written in Solidity, Rust, Go, or Vyper to identify logic flaws, reentrancy, front-running, flash loan vulnerabilities, and integer overflows.
Act as a subject matter expert in offensive information security performing dynamic and manual security assessments on web technologies such as APIs, JavaScript Frameworks, Artificial Intelligence, and Distributed Ledger Technologies.
Drive remediation by outlining a defense-in-depth approach to business stakeholders and providing strategic solutions to developers on effective preventive and detective security controls.
Have strong technical writing and presentation skills to report and articulate the vulnerability assessment results to any audience.

Requirements

Master's Degree or PhD with 3+ years of professional or research experience in blockchain and related technical areas
Bachelor's Degree with 5+ years of relevant professional experience in blockchain and related technical areas

Experienced principal blockchain engineer with payment and exchange building experience

Travoom · Posted Nov 5, 2026

Open

Santa Monica, California, United States
Principal
5+ years

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Lead blockchain engineering for a gambling-focused social network platform.

Responsibilities

Design and develop decentralized applications and smart contracts on Ethereum, Binance Smart Chain, and Solana
Audit and secure smart contracts using tools such as Mythril and Slither
Integrate cryptocurrency wallets (MetaMask, Trust Wallet) and manage crypto payments
Implement Layer 2 scaling solutions (Optimistic Rollups, zk-Rollups) to support high-volume micro-transactions
Integrate third‑party blockchain tools and SDKs, and build backend APIs with Django or Express.js

Requirements

Bachelor's degree in Computer Science, Software Engineering, Mathematics, or related field

Skills

Solidity Rust JavaScript Python Go Ethereum Binance Smart Chain

Software Engineer Full Stack | Java + Angular | Blockchain & IA | Híbrido

knowmad mood · Posted Nov 5, 2026

Open

Madrid, Madrid, Spain
Hybrid
Full-time · Mid

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Buscamos incorporar un/a Software Engineer Full Stack con experiencia sólida en Java/Spring Boot y Angular para participar en un proyecto tecnológico dentro del sector bancario trabajando con activos digitales, blockchain e IA.

Compensation

Contrato indefinido: Desde el primer día, con opción de 12 o 14 pagas.

Responsibilities

Diseño, desarrollo y evolución de soluciones digitales end-to-end
Diseño e integración de APIs
Desarrollo de aplicaciones distribuidas
Trabajo con blockchain, DLT y activos digitales
Uso de herramientas de IA aplicada al desarrollo

Skills

Java 21 Spring Boot Angular API Design API Integration Blockchain DLT Digital Assets Tokenization Asset Custody

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