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Senior Protocol Engineer

Remote - New York | California | Washington | Washington D.C. | Remote - USA
Alarm Full Time

Job Description

The global financial ecosystem is changing. Revolutionary blockchain technology has unlocked the potential for people around the world to have more equal access to wealth and information. This transformation has begun with the mass global adoption of cryptocurrencies but like all new financial systems, it needs greater trust to realize its full potential and remain safe from bad actors. That’s where we come in. The Chainalysis blockchain data platform enables businesses, governments, and banks to solve the world’s most high-profile criminal cases, paving the way for an economy built on blockchains.

The global financial ecosystem is changing. Revolutionary blockchain technology has unlocked the potential for people around the world to have more equal access to wealth and information. This transformation has begun with the mass global adoption of cryptocurrencies but like all new financial systems, it needs greater trust to realize its full potential and remain safe from bad actors. That’s where we come in. The Chainalysis blockchain data platform enables businesses, governments, and banks to solve the world’s most high-profile criminal cases, paving the way for an economy built on blockchains. 

Protocol Engineers are embedded in our data platform teams within Engineering. This team partners with research and product teams, helping to onboard new blockchains into our products. Protocol Engineers in the Data Intelligence group have a deep understanding of various protocols, are experts at parsing transaction information, build scalable ingest pipelines, and write reusable libraries. We measure success by the accuracy of the data parsed from blockchains and velocity to onboard new blockchains into our products.

In one year you’ll know you were successful if…

  • You have earned the ins and outs of our blockchain analysis techniques
  • Onboarded new blockchains into our product
  • Worked with our product teams to ensure accurate data is provided to our customers
  • Have become an expert in multiple blockchains
  • Contributed to the effectiveness and velocity of team deliverables
  • You have learned new technologies and shown that you are not afraid to work outside your comfort zone


A background like this helps: 

  • Deep understanding of one or more blockchains from both a protocol and data perspective
  • Proven experience with running batch and streaming based etl pipelines in production
  • Understanding of efficient data structures, algorithms and computational complexity
  • Planned, built, and owned production systems
  • Experience with Python, Java, and/or Typescript
  • The versatility and willingness to learn new technologies on the job
  • Blockchain P2P Node and Networking Fundamentals
  • The ability to clearly communicate complex results to technical and non-technical audiences
  • Bias for action

The following would differentiate you:

  • Experience with cloud environments (AWS, GCP, etc)
  • Contributed to a blockchain open source project

#LI-BD1 #LI-Remote

At Chainalysis, we help government agencies, cryptocurrency businesses, and financial institutions track and investigate illicit activity on the blockchain, allowing them to engage confidently with cryptocurrency. We take care of our people with great benefits, professional development opportunities, and fun.

You belong here. 

At Chainalysis, we believe that diversity of experience and thought makes us stronger. With both customers and employees around the world, we are committed to ensuring our team reflects the unique communities around us. Some of the ways we’re ensuring we keep learning are an internal Diversity Committee, Days of Reflection throughout the year including International Women’s Day, Juneteenth, Harvey Milk Day, and International Migrant’s Day, and a commitment to continue revisiting and reevaluating our diversity culture. 

We encourage applicants across any race, ethnicity, gender/gender expression, age, spirituality, ability, experience and more. Additionally, if you need any accommodations to make our interview process more accessible to you due to a disability, don't hesitate to let us know. You can learn more here. We can’t wait to meet you.  

Applying from the EU? Please review our Candidate GDPR Notice.


By submitting this application, I consent to and authorize Chainalysis to contact my former employers, and any and all other persons and organizations for information bearing upon my qualifications for employment.  I further authorize the listed employers, schools and personal references to give Chainalysis (without further notice to me) any and all information about my previous employment and education, along with other pertinent information they may have, and hereby waive any actions which I may have against either party(ies) for providing a reference.  I understand any future employment will be contingent on the Company receiving satisfactory employment references.

Chainalysis COVID-19 Policy - USA

All employees are required to have or obtain a COVID-19 vaccination as a condition of employment at Chainalysis, unless an exemption has been approved. All employees shall be required to report their vaccine status. All new employees shall be required to provide proof of their vaccination status prior to the start of their employment.  

Chainalysis COVID-19 Policy - EMEAAs an employer, Chainalysis is obliged to ensure a healthy and safe working environment. This means that we must try to prevent the coronavirus from spreading inside the workplace and all employees are obliged to follow the local regulations issued by the relevant health authorities.  

  • To help support a safe work environment, we encourage all employees in EMEA to get fully vaccinated against COVID-19.
  • Employees will not be required to attend an event or in-person customer meeting. 
  • Employees in the EU and the UK are allowed to travel internationally for internal meetings to any country deemed “green or amber” by the EU and the UK authorities. All attendees for Chainalysis in-person events or meetings will be required to adhere to the following guidelines:  
    • International travel will only be permitted if you receive approval from both your manager and Executive Leader
    • You must familiarize yourself and comply with any screening/safety protocols imposed by the entity/individual hosting the in-person meeting or event
    • You must comply with any and all safety guidelines and travel restrictions established by applicable law  
    • If you are in close or proximate contact with others at the event/customer site and test positive for COVID-19, you must immediately notify the People Team and avoid contact with others for 10 days

Chainalysis COVID-19 Policy - APACWith circumstances changing on a regular basis and parts of our APAC team going in and out of mandatory lockdown, APAC will continue to follow country legislation and guidelines.



Chainalysis has become known as the leader in blockchain investigation and compliance software. Our products have built trust in blockchains by taking down terrorist financing campaigns, disrupting major ransomware operations, identifying the Twitter hackers, and more. Now, we are building the blockchain data platform for cryptocurrency. Backend engineers will be critical to that mission by building and scaling the APIs and data layers our customers rely on every day to stop crime, understand risk, and strategize about their business. Working alongside infrastructure and security-focused engineers, they obsess over making our services highly available and safe for our customers to use for their most sensitive and real-time blockchain workflows. They deeply understand what is possible with cloud-native technologies and use those insights to enable our customers to push the boundaries of the cryptocurrency landscape.

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Protocol Networking Engineer, (Backend TypeScript), Libp2p/Lodestar

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Job Description

ChainSafe is a leading blockchain research and development firm specializing in infrastructure solutions for the decentralized web. We spearhead ecosystem projects like Lodestar, Web3.js, Forest, Mina-rs, and Gossamer and more. ChainSafe creates solutions for developers and teams across the web3 space utilizing our expertise in gamingbridging, NFTs, and decentralized storage. As part of the mission to build innovative products for users and better tooling for developers, ChainSafe embodies an open source and community-oriented ethos.

To learn more about ChainSafe, take a look at our Discord, GitHub, and website.

Here’s what you need to know before reading on:

  • ChainSafe Systems, a blockchain research and development company, is seeking dedicated Protocol Network Engineers to join the Lodestar team, our Ethereum Consensus (Eth2) implementation written in TypeScript.
  • We are global, remote-friendly, and open to contractors
  • Lodestar is an Ethereum Consensus client and ecosystem of resources to provide and support the Ethereum protocol, including the Libp2p networking stack. Libp2p is a peer-to-peer networking protocol enabling Lodestar to participate in Ethereum consensus through its TypeScript implementation. You will contribute in ensuring the long-term success of Ethereum and Lodestar while being at the edge of multiple technological fronts.

About the Role

As a protocol networking engineer, you will contribute to Lodestar and Libp2p by developing accurate, secure and performant code to implement various networking specifications. No prior blockchain experience is required, but it is expected to gain protocol proficiency over time. You'll also have the opportunity to engage with a wider Ethereum/Libp2p protocol community, other client teams, public goods maintainers and contribute to research efforts to influence its future design. The position is full-time and remote-friendly.

At ChainSafe, you’ll be part of a team that believes in the vital importance of community and contributing to advancing humanity with open-source and decentralized technology.


  • Understand a protocol specification and develop a highly performant implementation
  • Research multiple solutions and evaluate their performance trade-offs
  • Implement and maintain new networking specifications such as light-client p2p solutions
  • Refactor and improve existing features in the client and our open-source networking libraries (e.g. js-libp2p-gossipsub, js-libp2p-yamux, js-libp2p-noise)
  • Review, audit and test your teammates code
  • Provide feedback on overall design decisions
  • Collaborate with other protocol implementation teams to share knowledge and improve the protocol networking stack

Required skills and experience

  • Experience developing highly performant, secure, and scalable networking software
  • Senior Proficiency in JavaScript and TypeScript (no front-end experience required)
  • Experience in distributed applications and peer to peer networking
  • Comfortable learning complex protocols from scratch
  • Takes initiative, is a self-starter, be accountable for work
  • Experience with open-source software or strong communication skills as we actively coordinate with external parties

Nice to have

  • Experience with blockchain protocols
  • Experience with cryptography
  • Experience with development on nodeJS
  • Strong academic or engineering background
  • Performance analysis and optimization, optimizing data structures and algorithms
  • Devops, testing infrastructure, and CI for large systems
  • Familiarity with open-source software principles

If you feel like you’re the perfect fit for the role, please apply even if you don’t match all the requirements.

Hiring Steps

  • Selected candidates will be invited to a 30-45 minute screening call with one of our tech recruiters
  • Next, candidates will be invited to a 60-minute values interview with one of our project managers
  • Then, candidates will be asked to complete a technical task in under 4 hours, but we provide up to 5 business days to complete
  • Lastly, candidates will be invited to a 60-minute interview with the team lead

Why Join ChainSafe

Founded by developers for developers, ChainSafe is a remote-first company with an international team. We continue to provide opportunities for personal and professional growth, value autonomy and responsibility, have a results-driven environment, and offer flexible work hours.

We care deeply about our values and look for these attributes in every new team member. In addition, we recognize the benefits of cultivating a diverse team and aspire to embed respect for all people into our culture. We encourage women, the LGBTQIA+ community, people of color, and members of any other group underrepresented in the blockchain space (or tech in general) to apply.

How to Apply Please fill out the below Greenhouse application form and ensure that you attach your resume and link your Github/Gitlab profile or any software project that you have contributed to (if applicable).