Senior Frontend Engineer - Custody Experience
BitGo is a prominent player in digital asset financial services, offering custody, liquidity, and security services to institutional investors. Engaged in centralized and decentralized finance, BitGo delivers leading trading, lending, and borrowing solutions through its prime brokerage services and serves as the custodian for WBTC. BitGo provides clients with a comprehensive digital asset solution through innovations like BitGo Portfolio and Tax launched in 2020 and BitGo Trust Company created in 2018. Handling approximately 20% of global Bitcoin transactions and supporting over 1,000 coins and tokens, BitGo serves a diverse customer base that includes major crypto exchanges and institutional investors across more than 50 countries. Supported by a lineup of reputable investors like Goldman Sachs, Craft Ventures, Digital Currency Group, and others.
We are currently seeking a Senior Frontend Engineer to join our team. Given the substantial volume of cryptocurrency transactions processed by BitGo, we prioritize delivering high-quality software and platforms. Our integrated platforms connect with various exchanges, agencies, and governments worldwide, and we leverage cutting-edge technology in the industry to build and enhance them.
This role is based onsite at our office in Palo Alto, CA.
Responsibilities:
- Collaborate closely with design and product managers to design and develop new UIs for upcoming projects
- Enhance existing UI functionality across multiple products
- Develop reusable code for future applications
- Work on improving the health of the codebase
- Engage in cross-team communication with stakeholders to understand implementation requirements
- Mentor peers within the engineering team through code reviews and sharing best practices
- Offer maintenance support and optimize performance for existing applications
Skills & Experience:
We are seeking team members who embody our values of open communication, transparency, ownership, and high craftsmanship, sharing our vision to instill trust in digital assets.
Required:
- Minimum of 5 years of frontend software engineering experience
- Proficiency with React
- Advanced skills in JavaScript, CSS, and HTML
- Experience with modern JavaScript frameworks
- Familiarity with Node.js and Express applications
- Exposure to design systems
- Knowledge of unit, integration, and end-to-end testing
- Ability to work independently in a fast-paced setting
Nice to have:
- Interest in cryptocurrencies and blockchain technology
- Familiarity with Tailwind, React-Query, NextJS
Why Join BitGo?
Our pursuit of disrupting the industry relies on vision, innovation, passion, technical brilliance, drive, collaboration, and execution. Join a team of exceptional individuals who embody our core values and work towards excellence. We welcome innovative problem-solvers who take risks and desire to contribute to revolutionizing the world's financial markets.
Benefits of working at BitGo include:
- Competitive base salary, bonus, and stock options
- Full company-paid health insurance for employee, partner, and dependents
- Up to 4% 401k company match
- Paid parental leave and vacation time
- Free commuter/parking pass
- Custom lunches, dinners, and snacks provided
- Tailored computer equipment and workspace furnishings
- Stimulating startup culture and supportive colleagues
Crypto assets represent a disruptive force in financial services, and participating in our team will position you to be part of the transformative impact on investing.
Pay Transparency Notice: Based on your level and location, the compensation package for this role typically ranges between $165,000 - $210,000 USD in base salary. Additionally, equity, an annual performance bonus, and the aforementioned benefits are included.
Junior/Mid Decentralized Infrastructure Engineer
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Senior Decentralized Infrastructure Engineer
Build and scale production-grade decentralized infrastructure: compute networks, protocols, storage layers, orchestration for AI workloads, and open-source primitives that power the next generation of agent systems.Skills &
Requirements:
4+ years in blockchain infra, distributed systems or high-scale compute
Deep experience with Rust / Go / C++ and protocols (libp2p, IPFS, custom consensus, GPU orchestration)
Bonus: self-hosted AI compute, decentralized training or edge inference
Ship fast, own uptime, love extreme performance and cost efficiency
Salary:
$175,000 – $255,000 USD base + big equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug elite builders straight into our fastest portfolio companies.
This is your chance to build the actual rails for autonomous agents and open digital economy at scale. Zero bureaucracy, maximum leverage.
High risk. Zero apologies.
Web3 Fullstack Developer
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.
Junior AI Engineer
Join one of our fast-growing portfolio startups and help build simple AI features. You’ll work with large language models, create basic automations and chat tools, test ideas, fix small bugs, and integrate AI into everyday products.
Skills & Requirements:
0–2 years of experience (fresh graduates or self-taught welcome)
Basic Python knowledge
Interest in AI, LLMs or chatbots (personal projects are a big plus)
Quick learner who enjoys trying new things
Good English for team communication
Salary: $95,000 – $135,000 USD base + equity in the startup + full benefits
Description:
Sirex.vc not only invests — we actively help our portfolio companies hire great people. This Junior AI Engineer role is inside one of our AI-native startups. You’ll get real hands-on experience, learn from the best, and build things users actually use — all with full support from the Sirex team.
High risk. Zero apologies.
AI Agent Engineer
Join one of our high-conviction AI-native portfolio companies and build autonomous AI agents from the ground up. You’ll design agent architectures, implement tool-calling & memory systems, connect them to browsers/shell/APIs, run long-horizon tasks, and ship features that make the product feel alive and truly useful.
Skills & Requirements:
2–5 years building LLM-powered agents (LangGraph, CrewAI, ReAct, custom frameworks)
Strong Python skills + experience with tool calling, RAG, vector stores and evaluation
Bonus: familiarity with browser automation, self-hosted models or decentralized compute
Fast executor who loves shipping in ambiguity
Passion for agents that actually do real work (not just chat)
Salary: $160,000 – $230,000 USD base + meaningful equity (in the portfolio company) + full benefits + carry from Sirex network
Description:
Sirex.vc doesn’t only write checks — we actively help our portfolio companies recruit the best people on the planet. This AI Agent Engineer role is inside one of our fastest-moving startups building the next generation of autonomous agents. You’ll get direct support, intros, and operational help from the Sirex team while working on frontier technology that can change how the world uses AI.
High risk. Zero apologies.