Security Engineer - Cloudflare Specialist

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.
 

About Wintermute

Wintermute is a technology unicorn and a major player in algorithmic trading, specializing in digital assets. The company offers liquidity on various cryptocurrency exchanges and trading platforms, as well as OTC trading solutions. Additionally, Wintermute supports blockchain projects and financial institutions entering the crypto space. The Wintermute Ventures arm invests in early-stage DeFi projects.

Founded in 2017, Wintermute blends the technology standards of high-frequency trading firms with the innovative and entrepreneurial culture of tech startups. The company believes in the potential of blockchain, takes a long-term view on the digital asset market, and aims to lead in building an innovative and compliant market.

About the Role

This position is a key technical role within the Infrastructure Engineering team at Wintermute. The role involves maintaining, optimizing, and scaling a mixed environment spanning physical and virtual computing landscapes. The main responsibilities include overseeing and enhancing server and network infrastructure, offering high-level technical support for systems, and driving automation setups.

We are seeking a proactive infrastructure professional who can take charge of our computing environment. In this role, you will collaborate with senior engineers to scale systems, develop automation solutions (especially in Python), and adapt to the evolving needs of the business. Success in this role involves maintaining, troubleshooting, and enhancing networks, routing protocols, and computing systems.

Wintermute provides ample opportunities for individuals to enhance their skills in automation and network infrastructure engineering.

Hard Skills Requirements:

Problem-Solving & Agility: Ability to find optimal solutions for various problems, ranging from data center connectivity management to hardware troubleshooting.

Network & Data Centre Foundations: Solid grasp of data center connectivity, structured cabling, and core TCP/IP networking concepts.

Cisco Networking: Hands-on experience with configuring, managing, and troubleshooting Cisco switches.

OS & Hardware Expertise: Proficient in server hardware, network appliances, server OS (specifically Linux), and troubleshooting network infrastructure issues.

Experience: Minimum of 5 years in systems administration, network infrastructure engineering, or related roles.

Network Troubleshooting: Experience diagnosing network performance issues using tools like Wireshark and traceroute.

Hardware Lifecycle: Ability to analyze and resolve complex hardware failures and performance bottlenecks.

Version Control: Familiarity with Git workflow.

Team Collaboration: Ability to work effectively as part of a team supporting production systems.

Performance Management: Experience with hardware/network monitoring tools and performance tuning.

Professional Communication: Strong communication skills in technical interactions.

Organization: Strong organizational skills and attention to detail.

Flexibility & Support: Availability for weekend and evening shifts and out-of-business-hours support when needed.

Nice-to-Have Skills:

Security & Firewalls: Experience with enterprise firewalls and ACLs.

Routing Protocols: Basic familiarity with routing protocols like BGP and OSPF.

Server Administration: Knowledge of enterprise Linux server environments and automated deployment tools.

Automation: Experience scripting in Python for network administration tasks.

Why Join Our Team:

Work at a top algorithmic trading firm.

Engaging projects with accelerated responsibilities.

Vibrant working culture with various team activities.

Offices in central London & Singapore with amenities.

Great company culture with a startup vibe.

Competitive compensation with perks like pension and health insurance.

AI tools may be used in parts of the hiring process to support recruitment efforts, but final decisions are made by humans. Contact us for more information on how data is processed.

About the opportunity:

Build, set up, and implement AI assistants, agents, and intelligent workflows for practical use in enterprise applications aligned with US Central-time.

About our client:

Our client focuses on industrial process control and automation technology, aiding manufacturers in enhancing performance with a strong emphasis on relationships and top-tier talent.

Responsibilities:

Transform architectural blueprints into functional solutions, encompassing AI assistants, agents, intelligent workflows, automations, and low-code applications.

Configure various elements in Copilot Studio, Power Automate, Power Apps, and Agentforce such as prompts, instructions, connectors, permissions, and more.

Integrate solutions with major platforms like Microsoft 365, Salesforce, and ERP systems.

Develop prototypes and proofs of concept for assessment alongside architects and client teams.

Perform testing against predefined criteria to ensure accuracy, reliability, security, performance, among others.

Prepare solutions for production including deployment, documentation, monitoring, and support transition.

Enhance and resolve live solutions based on user feedback and data analysis.

Create technical documents, guides, and reusable components.

Engage in planning and client sessions periodically, reporting progress monthly.

Requirements (must-haves):

3 to 6 years of experience in delivering business applications or automation solutions.

Proficiency in Power Platform components, especially Power Automate and Power Apps.

Experience in building and deploying agents, copilots, or intelligent workflows.

Familiarity with generative AI behavior and integration fundamentals.

Knowledge of source control, ALM, and deployment pipelines.

Strong English proficiency for client interactions and documentation.

Bonus points (nice-to-haves):

Relevance certification such as PL-400, PL-200, etc.

Scripting skills in various languages like Python, JavaScript, PowerShell, or C#.

Exposure to Salesforce or industrial automation environments.

Enterprise ERP integration experience is a plus.

Perks & benefits:

Equipment provided for work.

Full back-office support for legal, accounting, HR, and delivery functions.

Mentorship for career and cultural adaptation.

Free English lessons offered.

Referral bonus scheme available.

Remote work with office access.

Hiring Process:

Initial interview with Tech Recruiter with possible AI assessment.

Followed by client-specific interview stages.

Offer presentation.

Onboarding supervised by Ubiminds support team.

Artificial intelligence may be utilized in parts of the recruitment process to aid in application reviews and assessments. Final recruitment decisions are made by humans. For further details on data processing, please reach out to us.

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.