Senior Engineer – Angular / .NET Core / AWS (530)
Senior Engineer –
Are you ready to advance in your international career with support from a company centered on its people? Embrace the opportunity with Ubiminds, a renowned GPTW-certified organization collaborating with American software enterprises to enhance their development capacity by incorporating the top 5% talent from Brazil for their LATAM strategies. This placement offers a one-of-a-kind amalgamation of staff augmentation and employer-of-record amenities.
Ubiminds extends aid to a progressive SaaS firm specializing in crafting high-tier software solutions utilized globally by enterprises. As the platform's operations amplify, they seek to enlarge their engineering unit to erect resilient, top-performing applications while adopting contemporary development techniques, AI-powered engineering, and cloud-native frameworks.
Overview
In need of a skilled Senior .NET Engineer enthusiastic about erecting scalable SaaS applications, unraveling intricate technical obstacles, and administering supreme software quality from inception to execution. The incumbent will maneuver through backend and front-end technologies, conceptualizing and actualizing robust solutions leveraging .NET and contemporary web frameworks. An essential facet of the development venture focuses on a Shift Left culture where engineers bear full accountability for their code's quality via automated testing, perpetual enhancement, and proactive issue redressal. The perfect applicant exhibits strong teamwork abilities, adeptness across multiple teams, and optimized utility of AI-based development tools to enhance efficacy and software excellence.
Key Duties
Design and deploy sustainable, serviceable, and high-performance SaaS applications. Deconstruct intricate business prerequisites into orderly, well-arranged technical outcomes. Fabricate and uphold RESTful APIs and backend utilities exploiting C#, .NET Core, Web API, and Entity Framework. Application of software architecture tenets, including Domain-Driven Design (DDD, CQRS, and immaculate architecture models. Devising, enhancing, and supporting SQL Server databases, stored procedures, indexes, and data accessibility layers. Creation and maintenance of front-end apps deploying Angular or akin contemporary frameworks. Crafting clean, testable, sustainable, and well-described code. Full ownership of essential tasks encompassing unit, integration, and performance assessments following a Shift Left ethos. Harmonic partnership with Product Managers, Engineers, and stakeholders to furnish user-focused solutions. Diagnostics and alleviation of performance, scalability, and reliability inadequacies. Leveraging AI-backed developmental tools like GitHub Copilot, Claude, Cursor, or parallel platforms for expedited software construction and augmented code caliber. Active involvement in code assessments, architectural dialogues, and ceaseless enhancement operations.
Prerequisites
Over 5 years of exposure to constructing corporate or SaaS software applications. Extensive proficiency in C#, .NET Core, ASP.NET Web API, and backend evolution. Hands-on involvement with Entity Framework (EF Core or EF6). Solid know-how of Angular or alternative recent front-end frameworks. Intimate acquaintance with SQL Server, covering query refinement, stored processes, indexing, and performance fine-tuning. Sound grasp of Object-Oriented Programming (OOP), software model patterns, and enterprise frameworks. Experience implementing DDD, CQRS, and stratified application architectures. Familiarity with multi-threading, asynchronous programming, and performance enhancement. Adeptness in Git, CI/CD pipelines, and Agile development tactics. Robust debugging, troubleshooting, and glitch-solving competencies. Exceptional correspondence proficiencies in English.
Valued Skills
Hands-on participation in creating AI-integrated features, like smart search, cryptoanalysis-powered functionalities, personalized suggestions, or smart forms. Proficiency in functioning within Shift Left / No QA settings with full feature ownership. Understanding of event-driven architectures and messaging frameworks. Insight into Microservices Architecture. Experience with cloud infrastructures such as AWS or Azure. History of working across numerous squads or distributed engineering entities.
Workplace Environment
Engineering ambience earmarked by ownership, accountability, and eminence. Shift Left philosophy laying a strong emphasis on automated testing and software credibility. Cooperative sphere enabling close interaction within Product and Engineering squads. Encounter modern AI--based developmental methodologies. Lively SaaS ambiance concentrated on scalability, inspiration, and client influence. Significant concentration on continuous enhancement and engineering prowess.
Ubiminds Insight
Our Ethos
Person-Centered. Our emphasis surrounds individuals! Challenging Dynamics. Pervasive improvement is innate to us. Action-Oriented Approach. Esteeming attitude, accountability, and dedicatation. Unified Effort. We labor, learn, and advance jointly as a team. Excellence-oriented Norm. Providing top-tier services and outlaying expected standards. Genuineness Priority. Truthfulness, clarity, and candor are upheld -- at all times.
Benefits and Extras
As a Senior .NET Engineer at Ubiminds, you are assured: Addition into a product-driven firm and deemed a full-fledged team participant. Dependence on our comprehensive back-office reinforcement including vocation counseling, HR services, and ambassador assistance. Adherence to our remote-first guideline. Access to personal MacBook provision (No BYOD policy). Entrance to technology deliberations, assembly congregations, and a staunch assemblage of ace engineers. Fortifying your English linguistic proficiency through free lessons with a native speaker. Upshot a referral conceit by introducing new Ubiminders. Feel the office vibe intermittently? Our Florianópolis head office awaits with treats, massages, beverages, and recreation options.
How our recruitment unfolds:
- Interactive session with Tech Recruiter (discourse on job particulars and your professional history).
- Technical Evaluation.
- Interview with Client.
- Offer Acknowledgement [Congrats!]
At certain phases, artificial intelligence (AI) tools may aid in a segment of the recruitment process, spanning candidate scrutiny, resume scrutiny, or evaluation. These aids supplement our recruitment workforce dexterities but never usurp personal judgment. The ultimate hiring resolutions are human-led. For further information on data processing details, don’t hesitate to reach out.
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.
Senior Rust Developer
We're looking for a Senior Rust Developer to join our core engineering team and own the systems that sit closest to the market. This means low-latency order execution engines, high-throughput market data pipelines, real-time streaming infrastructure, and integrations with both centralized and decentralized exchanges. Every millisecond and every line of code matters here, and you'll be the person making sure it all holds up under pressure. This is not a role for someone who wants to write Rust adjacent to trading. You'll be building the backbone of live production systems where correctness, safety, and raw performance have direct P&L consequences. You'll work alongside quantitative researchers and other engineers to implement and deploy strategies, and you'll have meaningful input into the infrastructure decisions that shape how we build and scale. If you've spent years pushing Rust to its limits in high-performance environments and you want that work to matter in real markets in real time, this is the role.
Responsibilities
Design, build, and maintain high-throughput, low-latency trading systems in Rust
Develop and optimize order execution engines, market data feeds, and real-time processing pipelines
Build reliable integrations with centralized and decentralized exchanges across CEX and DEX environments
Architect systems for real-time streaming data and WebSocket communication at scale
Write safe, well-tested concurrent code leveraging async runtimes including Tokio and async-std
Collaborate with quantitative researchers to implement and deploy trading strategies into production
Profile, benchmark, and eliminate performance bottlenecks across critical system paths
Contribute to infrastructure decisions around deployment, observability, and fault tolerance
Requirements
5+ years of professional software engineering experience
2+ years building and maintaining production systems in Rust, and you will be tested on it
Deep command of Rust's ownership model, lifetimes, traits, and async patterns
Experience with high-performance networking including TCP/UDP, WebSockets, and gRPC
Strong understanding of concurrency primitives and lock-free data structures
Familiarity with financial systems, trading platforms, or real-time data pipelines
Linux systems programming and performance tuning experience
Comfortable working independently in a fast-paced, remote-first environment
Nice to Have
Experience with cryptocurrency exchanges, DeFi protocols, or blockchain RPC nodes
Knowledge of FIX protocol or other financial messaging standards
Open-source Rust contributions
Experience with FPGA or kernel-bypass networking such as DPDK or io_uring
Familiarity with quantitative trading concepts including order books and market microstructure
Infrastructure experience with Docker, Kubernetes, Terraform, or Prometheus/Grafana
Senior Software Engineer
Quantitative Researcher
Responsibilities
Develop, backtest, and continuously improve quantitative trading models and algorithms, translating mathematical insights into production-ready code
Collaborate with trading and development teams to refine existing strategies and build new ones with a direct focus on P&L impact
Work through large and complex datasets to identify patterns, validate hypotheses, and stress-test models against real market conditions
Conceptualize valuation frameworks, improve mathematical models, and maintain strategy performance in live environments
Conduct ongoing statistical research into crypto market microstructure and price dynamics using both conventional and unconventional data sources
Requirements
Advanced degree in mathematics, statistics, physics, computer science, or a related quantitative field
Strong proficiency in probability and statistics, including time-series analysis, machine learning, and pattern recognition applied to financial data
Hands-on programming experience in Python, with familiarity in R or MATLAB and ideally some exposure to compiled languages like C++
Prior experience in crypto markets, digital asset trading, or algorithmic finance
Proven ability to work in a data-driven research environment with minimal direction
Rigorous, evidence-based approach to problem-solving with the ability to move quickly from hypothesis to testable implementation
Junior / Middle Metaverse Developer (Unity / Web3 / VR)
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.