Senior Software Engineer – .NET / Angular (562)
We are in search of a proactive Senior .NET Engineer to play a key role in developing top-notch, scalable enterprise SaaS applications.
Our client specializes in offering comprehensive HR software tailored for the public sector, addressing the complete employee lifecycle requirements across recruiting, onboarding, performance management, and government organization compliance.
Responsibilities:
Analyze and solve intricate problems by breaking them down into manageable components, crafting efficient solutions, and carrying out the fundamental architecture design.
Develop and uphold RESTful APIs and backend services utilizing technologies such as C#, .NET Core, Entity Framework, and Web API.
Implement software architecture models like Domain-Driven Design (DDD) and Command Query Responsibility Segregation (CQRS) to construct adaptable and scalable systems.
Directly engage with SQL Server for tasks like database design, stored procedure development, query optimization, and performance enhancement.
Utilize Entity Framework (EF Core or EF6) for Object-Relational Mapping (ORM) and smooth data access.
Generate well-organized, testable, and sustainable code with thorough documentation.
Take charge of testing your code comprehensively, including unit, integration, and performance testing, within a Shift Left/No QA team setup.
Collaborate with product managers and cross-functional teams to grasp requirements and deliver customer-centric functionalities.
Leverage AI development tools like GitHub Copilot, Claude, or equivalents to accelerate code generation, refactoring, documentation, and development pace.
Requirements (Must-Haves):
5+ years of experience in developing enterprise or SaaS software.
Proficient in C#, .NET Core, and Web API with hands-on expertise.
Deep comprehension of Entity Framework (EF Core or EF6).
Skilled in SQL Server encompassing query writing, stored procedures, indexing, and performance fine-tuning.
Familiarity with Angular or related frontend frameworks.
Sound grasp of object-oriented programming, design patterns, and enterprise architecture.
Experience with DDD, CQRS, and well-structured business logic and data access layers.
Exposure to multithreading, asynchronous programming, and system performance optimization.
Proficiency in Git and contemporary development environments (CI/CD, Agile practices).
Demonstrated strong debugging and troubleshooting abilities.
Excellent English communication skills, including conversational proficiency.
Proven record of working effectively across multiple teams or squads.
Active usage of AI development tools like GitHub Copilot, Claude, or similar in your workflow.
Nice-to-Haves (Bonus Points):
Hands-on background in developing AI-powered functionalities like smart forms, intelligent search, NLP features, etc.
Experience in a Shift Left setup with complete feature ownership from design to production.
Familiarity with event-driven architecture or messaging patterns.
Perks & Benefits:
Provided equipment (no BYOD policy).
Full back-office assistance including Legal, Accounting, HR Business Partner, and Delivery team support.
Comprehensive career and cultural mentoring offering insights on professional presence, distinguishing oneself, and navigating the U.S. work environment.
Gratis English language lessons with a native speaker.
Referral rewards for recommending Ubi to tech peers.
Florianópolis HQ availability — completely remote, with office access at your discretion.
Hiring Process:
Tech Recruiter interview (including a brief AI assessment if needed).
Client interview procedures (company-specific).
Job offer extended.
Full support during onboarding from Ubiminds.
About Ubiminds:
Ubiminds, with nearly a decade of experience and Great Place to Work certification, facilitates connections between Latin American tech professionals and software enterprises in North America. Our comprehensive support encompasses recruitment, legal aid, accounting services, PeopleOps resources, and career guidance, empowering individuals to succeed globally and advance with confidence.
Ready to elevate your career globally? Apply now and be part of the thriving Ubiminds community!
Founding Technical Partners for Oferli – Elite Web & Mobile Development Team🌐
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
Senior Blockchain Engineer (Cosmos SDK & IBC)
Expectations:
Design custom modules (x/staking, x/rewards, x/merkl)
Implement IBC light clients and relayers
Optimize block time and state pruning
Write comprehensive unit & integration tests (Go test)
Build CLI tools for validators and delegators
Monitor node health and network upgrades
Collaborate with the research team on MEV-resistant ordering
Maintain chain upgrades (v1 → v2) with migration scripts
Write technical documentation for external validators
Nice to have:
Experience with Avalanche Subnets or Polkadot Substrate
Knowledge of HSM and key management
Open-source contributions to Cosmos SDK or related repos
Chinese+English language proficiency
Senior Mobile application developer
But specially, candidate should be native in English.
Team communication is very important.
Please bid US only
Thank you
Senior Blockchain Engineer - Low-Latency Execution Infrastructure (HyperEVM / Hyperliquid)
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.
Full-time Hackintosh iOS development
Responsibilities:
- Designing, developing, and implementing iOS applications for our Hackintosh platform
- Collaborating with cross-functional teams to define, design, and ship new features
- Troubleshooting application bugs and implementing solutions
- Ensuring the performance, quality, and responsiveness of applications
- Staying up-to-date with the latest industry trends and technologies
- Providing technical support and guidance to users as needed
Requirements:
- Proven work experience as an iOS Developer or similar role
- Proficient in Objective-C, Swift, and Xcode
- Strong understanding of iOS development best practices
- Excellent problem-solving skills
- Ability to work independently and as part of a team
- Strong communication and interpersonal skills
- Knowledge in web, mobile, and software development, engineering & architecture, customer service, and accounting and consulting specialist
If you are passionate about iOS development and eager to work on innovative projects in the Hackintosh space, we'd love to hear from you. Please apply with your resume and portfolio to be considered for this exciting opportunity.