Spain | Remote | Senior Engineering Opportunity MaxIT
Consulting – Max Corporate Group is looking for a Senior Full-Stack
Engineer, Consumer Fintech to join a fast-growing New York fintech
company building banking and payment products for US prediction
markets and regulated gaming. The company develops consumer-facing
financial products covering account funding, cards, onboarding,
identity verification, KYC, and real-time balances on top of its
own payments and settlement infrastructure. Its platform has
already processed more than USD 2 billion and continues to scale
rapidly across both product and engineering. About the Role This is
a senior product-engineering position for someone who has already
shipped consumer financial applications end to end. You will own
complete product experiences, from customer-facing flows through
backend services and production operation. Relevant experience
includes digital banking, payments, trading, cards, onboarding,
KYC, and other regulated consumer-finance products. The client has
not defined a mandatory technology stack for the search. The
priority is identifying strong senior engineers with genuine
financial-services product experience rather than optimizing for a
particular programming language or frontend framework. Key
Responsibilities Build and operate consumer-facing financial
products end to end. Develop onboarding, account-opening,
identity-verification, and KYC workflows. Build customer
experiences around cards, payments, balances, funding, and
financial transactions. Develop backend services supporting




consumer financial products. Own features from product and
technical design through deployment and production operation. Work
closely with product stakeholders to translate complex financial
workflows into simple user experiences. Ensure reliability,
security, and correctness across regulated financial processes.
Operate independently within a small, distributed engineering team.
Contribute to architecture and product decisions as the platform
scales. Required Qualifications 5+ years of professional full-stack
software engineering experience. Demonstrated experience shipping
consumer products end to end. Professional experience as an
employee of a neobank, payments company, trading platform,
brokerage, or comparable financial product company. Hands-on
production experience with onboarding, KYC, card, account, or
related financial workflows. Ability to work effectively across
frontend and backend systems. Strong product mindset and high
degree of technical ownership. Experience taking features from
initial design through deployment and ongoing production operation.
Comfort working autonomously within a remote engineering
organization. Current residence in Spain.



Existing authorization to
work in Spain. Particularly Relevant Experience Digital banks and
neobanks. Consumer payment applications. Card issuing and
card-management products. Trading or brokerage platforms. KYC and
identity-verification flows. Account funding and withdrawal
experiences. Real-time balances and transaction histories.
High-growth consumer fintech products. Adecuado Candidate Profile The
strongest candidate combines senior software-engineering depth with
genuine product ownership. You should be comfortable moving across
the stack, understanding the customer journey, making
implementation decisions, and remaining responsible for the feature
after it reaches production. The search is specifically focused on
engineers who have worked inside financial product companies.
Financial-services exposure acquired exclusively through consulting
or IT-services client projects is not considered equivalent for
this position. Work Arrangement This opportunity is fully remote
within Spain. Candidates must currently be based in Spain and
already have authorization to work in the country. Application If
your background aligns with this opportunity, please submit your
application through this same channel . Please include: Your
updated CV or resume. Your gross annual compensation expectations
in EUR. A brief description of the consumer fintech, onboarding,
KYC, payments, card, or digital-banking products you have
personally shipped into production.

📌 Senior Full-Stack Engineer, Consumer Fintech (Madrid)
🏢 MaxIT Consulting - Max Corporate Group
📍 Madrid