Soma Capital Portfolio Jobs

Senior Customer Success Engineer (MAD)



Customer Service, Sales & Business Development
Posted on Sunday, May 5, 2024

Senior Customer Success Engineer (MAD)

About Crossmint

At Crossmint, we're on a mission to bring the world on-chain. This is an urgent and important matter: as artificial intelligence advances, the lines of what is real and what is not are blurring, fostering a growing issue of bot spam, disinformation, deepfakes, and corruption. By bringing the world on-chain, we can create cryptographic proofs that restore our ability to discern what is true and what is not.
How do we do this? Crossmint is accelerating this transition by building APIs and tools that make it 100x easier to create, custody, and commerce with digital assets (NFTs) and credentials (VCs).
How do we fund this mission? We sell our tools and APIs as a service to other companies who wish to integrate NFTs, wallets, or credentials inside their systems. We save these companies hundreds of thousands of dollars in infrastructure and engineering, and charge them a fraction to manage all for them in a secure, compliant, and low maintenance way. More than 30,000 developers and companies have used us, including Mastercard, Microsoft, Etihad Airways, Red Bull, Adidas, Asus, AC Milan, Phantom, Rarible, Refik Anadol, and Snoop Dogg.
In addition, Crossmint is backed by top-tier investors and angels in the fintech and crypto space.
Who are we looking for? We are looking for individuals with extreme ownership, competence, and integrity. Our team includes math olympiad winners, Guinness world record holders, athletes, music composers, empaths, and degens. Diverse applicants are encouraged to apply.


Madrid, Spain

Type of employment

Full-time (Spain)


Senior (47 years)


At Crossmint, we pride ourselves on providing the best-in-class experience for developers and enterprises integrating our APIs into their apps and services.
The Senior Customer Success Engineer is the primary responsible person for ensuring this occurs. In this role, your main responsibility will be to work with our clients engineering teams to help them integrate and maintain the integration of their products with our services. You will do so by providing guided onboardings into our products and technical support when they hit an integration roadblock or experience issues after launch. Your responsibilities will include:
Onboard, support, and guide clients through their journey of integrating Crossmint APIs into their apps and services. Provide a best-in-class customer experience when doing so.
Deliver exceptional technical support, acting as a specialist for client queries and issues with our products, services, and integration.
Debug complex technical issues for our clients when interacting with our products and the blockchain.
Create technical demonstrations and improve self-service documentation.
Cultivate a deep understanding of blockchain and cryptocurrency to offer insightful support and guidance to our users and clients.
Liaise with our engineering team, providing valuable customer feedback to enhance our product offerings.
Adapt to a fast-paced work environment, displaying readiness to tackle new challenges and support initiatives.
Ensure high service levels are met with an approachable and responsive presence during designated shifts.
Create and manage automations via tools like Zapier, scripting, or GPTs.

About You

To thrive in this role, you should possess the following qualifications:
Excellent reading and writing comprehension skills in English.
4+ years in a technical or technical support position.
Know how to program web applications or backend services.
Hold a technical degree in Engineering, IT, or a related field, or possess equivalent knowledge and skills with industry experience in technical support roles.
Fast learner, continuously eager to acquire knowledge in crypto technologies and products.
Excellent troubleshooting skills, even in scenarios without complete information.
Willingness to participate in on-call support rotations, providing reliable assistance as needed.

Preferred Experience

We highly value candidates with the following experiences:
Solid understanding and hands-on experience with Solidity (must be able to write and deploy your own smart contracts), ERC721, and ERC1155.
Highly proficient in TypeScript or Python.
Deep knowledge and hands-on experience with REST APIs.
Highly proficient in reading logs, using observability monitoring tools such as Datadog, and analyzing stack traces to troubleshoot issues.
Solid understanding and hands-on experience with cryptocurrencies, blockchain technology, smart contracts, and NFTs.
NFT user (or creator) with a history of making or purchasing NFTs, showcasing a genuine interest in the NFT space and the importance of secure wallet solutions.
Hands-on experience using Artificial Intelligence (AI) and process automation tools like Zapier to enhance customer support operations.
If you are passionate about our mission and possess the skills and experience outlined above, we invite you to join us in our mission at Crossmint.


Highly competitive location-based compensation.
Unlimited, flexible PTO.
Company laptop and a quarterly allowance for any necessary home equipment.
Free meals in the office.
Company-paid trips for annual off-sites and team bonding.
Flexible work schedule.

Our Principles

Results and delivery: Ship high quality work fast.
Build for the long term: Build scalable, secure, and reliable solutions. Use AI.
Extreme Ownership: Be an effective Direct Responsible Individual (DRI). Be proactive.
Be a team player. Be an effective and kind colleague providing credible challenge. Be present and reliable.
If you are interested please apply with your resume and a cover letter at
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