Functional Software Engineer

Job not on LinkedIn

🕒 3 days ago

🌐 United States, Canada – Remote

🇺🇸 United States – Remote 🇨🇦 Canada – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Obsidian Systems LLC

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2014

💼 Consulting

₿ Crypto

🔧 Hardware

Consulting • Crypto • Hardware

Obsidian Systems LLC is a software engineering consultancy that designs and builds production-grade products, with deep expertise in blockchain and Web3 systems, hardware wallet applications, and high-assurance backend tooling. They focus on rapid, end-to-end product development (often delivering prototypes in ~10 weeks), leverage Haskell, Nix, and open-source tooling, and serve enterprise, government, and research clients across finance, crypto, and scientific domains.

📋 Description

• Design, implement, test, and maintain reliable software using functional programming principles • Develop clear, composable, and maintainable solutions to complex engineering problems • Apply strong typing, domain modelling, and abstraction to improve software correctness and reliability • Collaborate with engineers, technical leads, and client stakeholders to understand requirements and deliver effective solutions • Contribute to system design and architecture, balancing correctness, simplicity, performance, and maintainability • Write automated tests and use appropriate techniques to validate system behaviour • Review code, share technical knowledge, and contribute to engineering standards • Investigate and resolve complex technical issues across existing systems • Communicate technical decisions and trade-offs to technical and non-technical stakeholders • Adapt to different client environments, codebases, and technical challenges • Contribute to continuous improvement of engineering practices, tools, and delivery processes

🎯 Requirements

• 5+ years of professional experience developing and delivering production software • Strong understanding of software engineering fundamentals, including data structures, algorithms, testing, and software design • Experience with functional programming, either professionally or through substantial projects • Ability to reason about complex problems and translate requirements into well-structured software • Strong debugging and problem-solving skills • Commitment to code quality, correctness, and maintainability • Ability to communicate effectively and collaborate with other engineers • Willingness to learn new technologies and work across different technical environments • Preferred: Experience with Haskell, Scala, OCaml, F#, Clojure, or another functional programming language • Preferred: Familiarity with type systems, algebraic data types, pattern matching, and immutable data structures • Preferred: Experience with strongly typed domain modelling and functional design patterns • Preferred: Exposure to distributed systems, concurrent programming, or backend infrastructure • Preferred: Experience in blockchain, financial infrastructure, capital markets, or other domains where correctness and reliability are particularly important • Preferred: Familiarity with property-based testing and other techniques for validating complex software behaviour • Preferred: Experience with Nix or reproducible development environments • Preferred: Experience working in an engineering consultancy or collaborating directly with client teams

🏖️ Benefits

• Remote-first work arrangement • Globally distributed team • Opportunity to work on challenging client projects across technical domains • Opportunity to contribute to the next generation of financial market infrastructure