Principal Security Engineer, Security

I am Sadr, CEO of Oferli. We are building a high-performance, elite technical team, and I am looking for 5 to 10 dedicated founding technical partners to join me in this mission.
​The Vision:
Oferli is a 100% decentralized ecosystem. While we are rooted in Web3, our expertise spans across professional web and mobile application development. We are not just another agency; we are crafting the next generation of digital solutions. Our goal is to set a new standard for excellence, transparency, and decentralization.
​What I am looking for:
I am building a professional, senior-level "Elite Team." I am looking for partners who are truly passionate about the vision—not just short-term gains. By combining our individual expertise and portfolios, we will establish Oferli’s collective professional reputation.
​Requirements:
​Proven Expertise: You must be a senior-level professional. Please provide your portfolio showcasing your best work in web and mobile development.
​Commitment: This is a founding partnership. We are looking for those who believe in the mission and are ready to tackle complex challenges together.
​Professionalism: We operate with high standards. Communication and efficiency are key.
​How We Work:
​Collaboration: We use professional, secure channels for all communications. Qualified candidates will be contacted via email to be invited to our private workspace on Notion to align on our roadmap and launch our upcoming projects.
​Decentralized Operations: We leverage Web3 tools for collaboration and compensation, maintaining a fully decentralized environment.
​Growth: We are launching with a core team of at least 5 founding partners, scaling to 10, to deliver high-impact results for our clients.
​Application Process:
If you are a senior professional ready to build a world-class, decentralized ecosystem, apply here on LaborX. Qualified candidates will be contacted via email for further professional vetting and onboarding.
​Let’s build the future, together.
​Sadr B
CEO, Oferli

 
 
we’re looking for a senior blockchain engineer to build low-latency execution infrastructure around hyperevm and hyperliquid-related trading systems.
 
this is not a frontend or dapp role. the focus is on real-time execution systems, chain-native infrastructure, and market-aware backend engineering where latency, ordering, and state correctness directly impact execution outcomes.
 
you will work on systems that operate under noisy, adversarial, and highly dynamic conditions, including delayed or missing websocket events, rpc inconsistencies, transaction lifecycle complexity, state desynchronization, retries, and recovery logic.
 
core responsibilities include building and maintaining realtime blockchain data pipelines, websocket and rpc streaming systems, execution orchestration layers, liquidity-aware routing logic, transaction lifecycle management, and integration with orderbook and market data systems.
 
we are specifically looking for engineers who think in systems rather than features. meaning understanding how data flows through pipelines, how state evolves over time, how failures propagate, and how to design systems that recover automatically without manual intervention.
 
areas of work include:
 
- realtime blockchain data ingestion
- mempool-aware execution flows
- transaction lifecycle handling
- execution sequencing and routing
- websocket and rpc infrastructure
- state synchronization systems
- liquidity and orderbook integration
- performance and latency optimization
 
you should be comfortable working with distributed systems, asynchronous event processing, and latency-sensitive backend architectures.
 
strong experience in one or more of the following areas is highly relevant:
 
- exchange infrastructure
- trading systems
- execution engines
- blockchain indexers
- realtime event systems
- arbitrage systems
- rpc/node infrastructure
- defi backend systems
- low-latency backend engineering
 
preferred technical stack:
 
- typescript / node.js
- go
- rust
- python
- postgres
- clickhouse
- redis
- kafka or similar messaging systems
- docker
- linux environments
- evm rpc internals
- websocket infrastructure
 
ecosystem familiarity:
 
- ethereum, arbitrum, base, optimism, bsc
- hyperliquid / hyperevm
- foundry
- ethers.js / viem
- geth / erigon / nethermind
- dex and amm mechanics
- liquidity math, slippage, gas strategy, routing logic
 
this role is not suitable for:
 
- frontend-only developers
- nft or basic dapp experience only
- tutorial-level web3 developers
- candidates without production systems experience
 
we value engineers who have built real systems where correctness, latency, and reliability matter under load. we care less about buzzwords and more about concrete systems you have personally built and operated.
 
ideal candidates can clearly explain:
 
- system architecture decisions
- bottlenecks and tradeoffs
- failure modes and recovery strategies
- latency considerations in real systems
- production debugging experience
 
working style:
 
- remote
- async-first
- low bureaucracy
- high ownership
- engineering-driven team
- direct technical communication
 
we strongly prefer practical engineering depth over polished presentation. if you have built or worked on systems involving realtime data, trading infrastructure, blockchain execution, or latency-sensitive backend systems, please include details of those systems when applying.
 

Binance is a prominent global blockchain ecosystem known for being the force behind the world's largest cryptocurrency exchange by trading volume and user base. Trusted by over 300 million individuals across 100+ countries, we excel in industry-leading security, transparent user funds, fast trading engine, deep liquidity, and an extensive assortment of digital-asset products. Our offerings span trading, finance, education, research, payments, institutional services, Web3 features, and more. By harnessing the power of digital assets and blockchain technology, we strive to create an inclusive financial ecosystem that promotes financial freedom and enhances financial accessibility worldwide.

The HRIS Manager role entails overseeing the administration, enhancement, and continual optimization of the company's HR information systems, predominantly leveraging the Workday platform. This position involves collaborating closely with HR, Finance, Procurement, IT, and external vendors to ensure that the HR systems are scalable, secure, user-friendly, and aligned with the diverse business requirements across various markets.

Responsibilities:

Manage the configuration, maintenance, enhancement, testing, and upgrade of HR applications, systems, and modules, focusing primarily on Workday.

Provide comprehensive system support, troubleshooting, user guidance, and issue resolution for HRIS users and stakeholders.

Collaborate with HR teams and cross-functional stakeholders to identify process gaps, system improvement opportunities, and automation needs, and execute appropriate solutions.

Configure, sustain, and enrich Workday integrations with internal and external systems such as ATS, Finance and Procurement systems, employee portals, and other business applications.

Develop, maintain, and optimize Workday custom reports, dashboards, and data extracts in line with business and operational demands.

Oversee HRIS security roles, user access, permissions, and governance processes to ensure data access integrity and confidentiality.

Support HR data quality, system controls, audit readiness, and compliance with internal policies and data privacy standards.

Serve as the primary liaison between internal stakeholders and HRIS vendors for system implementation, operations, maintenance, and support.

Engage in vendor evaluation, procurement decisions, implementation planning, and negotiations for new HR digital tools, applications, and system enhancement projects.

Lead or assist in HRIS-related projects such as system implementations, upgrades, integrations, process redesigns, testing, change management, and user adoption.

Develop and sustain HRIS process documentation, system configuration records, user guides, training materials, and standard operating procedures.

Fulfill other related duties as required.

Requirements:

A Bachelor’s degree in Software Engineering, Information Systems, Computer Science, or a related discipline would be advantageous.

A minimum of 5 years of progressive experience in HRIS, HR technology, HR operations systems, or a related field.

Hands-on proficiency with Workday, encompassing exposure to various Workday modules.

Experience in supporting Workday integrations with third-party applications and enterprise systems.

Demonstrated proficiency in translating business requirements into practical HR system configurations, reports, workflows, or process enhancements.

Strong project management skills and the capacity to deliver high-quality work within set timelines.

Excellent cross-functional collaboration abilities working with various departments and external vendors.

Strong analytical and problem-solving skills with meticulous attention to detail in handling HR data.

Self-motivated, results-driven, and capable of thriving in a fast-paced and high-pressure international environment.

ABOUT UBIMINDS

Ubiminds, a GPTW-certified company, prioritizes placing people first. Specializing in partnering with U.S. software firms, Ubiminds meticulously selects the top 5% of talent from Brazil to drive growth strategies in the LATAM region.

ABOUT THE ROLE

The Client Partner is responsible for managing a portfolio of client accounts from the initiation of the first contract. Serving as the primary point of contact, you will handle scenarios such as client requests for additional engineers or noticing deviations from agreed-upon outcomes before the client does. Your role involves overseeing the relationship, ensuring renewals, facilitating expansion, and achieving revenue targets.

This position is not a standard account manager role focused solely on managing email correspondence. As a Client Partner, you will be accountable for driving retention and growth targets, engaging with client executives, and transitioning from basic staff augmentation to tailored consulting services centered around achieving specific outcomes. If you excel in fostering relationships equivalent to managing a small profit and loss statement, and can pivot between discussing technical roadmaps with a Chief Technology Officer and financial margins with the CFO, continue reading.

Responsibilities & Core Duties

Manage a portfolio of U.S. client accounts by monitoring their overall health, satisfaction levels, renewal rates, and revenue.

Drive net revenue retention and expansion by bolstering accounts with additional engineers, implementing Furiosa initiatives like AI Delivery Pods and the AI Acceleration program, and integrating advisory services.

Establish an operational schedule for each account, including creating quarterly strategic plans, conducting quarterly business reviews (QBRs), maintaining a monthly cadence for Tier 1 Strategic accounts, and ensuring an accurate account health assessment.

Lead efforts related to client renewals and commercial matters, such as extending Statements of Work (SOWs) and Master Service Agreements (MSAs) while sustaining profitable pricing structures and a reliable forecasting process.

Collaborate closely with delivery leads and the LatAm talent team to ensure that deployed personnel are equipped to deliver on intended outcomes. Manage transitions smoothly in cases where the fit is not optimal.

Cultivate multi-layered relationships with client executives, extending trust beyond individual champions up to the C-suite to mitigate risks associated with employee turnover.

Act as the primary liaison between clients and the organization, using insights gathered from client feedback to enhance Furiosa solutions and inform market strategies.

REQUIREMENTS (WHAT YOU NEED TO HAVE)

Possess a minimum of seven years of experience in managing client relationships and achieving revenue targets within the realms of staff augmentation, IT services, consulting, or enterprise Software as a Service (SaaS) sectors targeting U.S. clientele.

Demonstrate a proven track record of success in enhancing client retention and spearheading expansion initiatives through successful renewals, meeting revenue quotas, and achieving objectives.

Possess an in-depth understanding of software development processes, including agile methodologies, engineering staffing practices, distributed or nearshore delivery models. Ability to engage confidently with engineering leadership without necessitating coding skills.

Strong grasp of commercial operations involving the creation of SOWs, MSAs, pricing strategies to maintain profit margins, and accurate forecast preparation with the capacity to justify pricing decisions.

Familiarity with enterprise-level artificial intelligence (AI) adoption trends to engage in strategic discussions with client executives, identify realistic initiatives from buzzwords, and offer informed insights.

Demonstrated executive presence, a consultative approach to decision-making, ability to prioritize active listening, address challenging issues directly, and instill confidence in stakeholders.

Native-level fluency in English with a sound understanding of U.S. business culture.

NICE-TO-HAVES (WHAT WILL SET YOU APART)

Previous experience working within offshore or nearshore delivery frameworks and proficiency in recognizing their potential challenges.

Exposure to selling or delivering services in artificial intelligence (AI), machine learning (ML), or data analysis fields.

Proficiency in Portuguese or Spanish.

Previous involvement in structuring account management frameworks, allowing for shaping and improving existing processes within the organization.

Binance operates as a key player in the global blockchain industry, overseeing the world's largest cryptocurrency exchange in terms of trading volume and user base. Known for its trusted services across 100+ countries, we prioritize industry-leading security, user fund transparency, fast trading engine speeds, deep liquidity, and a comprehensive range of digital asset products. From trading and finance to education, research, payments, institutional services, and Web3 features, Binance leverages digital assets and blockchain to establish an inclusive financial ecosystem ensuring financial accessibility worldwide.

Join the dynamic Customer Service team at Binance dedicated to providing exceptional user support. As part of a client-facing role, the team prioritizes offering top-notch assistance with quick response times and accurate information through ticketing systems and live chat. This position entails handling customer inquiries, complaints, and identity verification processes on our renowned cryptocurrency exchange platform. We are looking for individuals who are empathetic, communicative, and adept at problem-solving to act as customer advocates and gather valuable feedback for service improvement. Join us in upholding exceptional service standards and enhancing customer satisfaction.

Responsibilities

Manage and review client queries related to client onboarding for both individuals and corporates.

Prioritize workload efficiently and escalate key issues promptly to managers when necessary.

Collaborate with various stakeholders such as Front Office, Compliance, and Product teams to assist clients in meeting KYC/KYB due diligence requirements.

Monitor and report any unusual activities or AML flags, ensuring compliance with regulations.

Engage in internal and external training programs focusing on AML/CFT and other related topics.

Foster knowledge-sharing within regional and national team members.

Perform general administrative tasks and related activities as required to support company operations.

Requirements

Minimum of 3 years of relevant experience in Customer Support, KYC/KYB operations, Onboarding, or Compliance roles, with a strong understanding of compliance regulations.

Proficient knowledge of local laws, regulations, and standards applicable to financial entities, with familiarity in upcoming virtual currency policies.

Experience in conducting risk assessments, trigger reviews, and enhanced due diligence processes.

Use of compliance tools such as World-Check, Liquid, Kodex, etc.

Accountable, motivated, and able to multitask under pressure.

Detail-oriented with excellent time management skills and a controlled mindset.

Fluency in English and Japanese required; knowledge of additional languages beneficial for liaising with global partners.

Why Binance

Contribute to shaping the future within a leading blockchain ecosystem.

Engage with top-tier professionals in a global organization emphasizing user-centric innovation.

Take on challenging, fast-paced projects in a collaborative and results-driven environment.

Opportunities for career advancement, continuous learning, and personal growth.

Competitive salary and comprehensive company benefits.

Flexible work-from-home arrangements based on the nature of team functions.

Binance is committed to diversity in the workplace, believing it to be essential for our success. By applying for a job, you acknowledge that you have reviewed and accepted our Candidate Privacy Notice.

We utilize artificial intelligence (AI) tools to support certain recruitment processes, aiding in application review, resume analysis, and response assessment. These tools complement human judgment but do not replace it, with final hiring decisions made by humans. For more information regarding data processing, feel free to reach out to us.