Solutions Engineer · Barcelona

Carlos López Gallego

Solutions engineer for payments and digital-asset infrastructure. I take banks, brokers and neobanks from first discovery call to an integration they can build.

status: "open to new roles"
location: "Barcelona, ES · open to remote (EMEA)"
focus: ["custody & trading APIs", "payments", "enterprise presales"]
languages: ["es", "ca", "en"]
11 yrs presales & solutions architecture 4 yrs at Visa on VisaNet operations $1M+ ARR enterprise deals owned
carloslopezgallego@gmail.com

About

For the last three and a half years at Bitpanda I was the technical owner of enterprise deals with regulated financial institutions adding crypto custody and trading to their own payment and investment products. I led discovery across architecture, money flows and regulatory constraints, designed the API solution, took it through security and due-diligence reviews, and handed delivery a scope they could implement.

Before fintech I spent eight years in API presales at Nexmo and Vonage in Singapore, and four years before that keeping VisaNet running for 250 banks and processors. I was one of the first SEs on my Bitpanda team and mentored the engineers who joined after me.

Experience

2011 → 2026
2023-04 → 2026-11

Client Solutions Lead, Enterprise · Bitpanda · Barcelona

  • Technical owner of strategic deals with banks, brokers and neobanks, each above $1M ARR, from discovery to close.
  • Designed end-to-end solutions on custody and trading APIs, covering fund and settlement flows and regulatory constraints.
  • Owned architecture reviews, security assessments, due diligence and technical questionnaires in enterprise procurement.
  • Led a brokerage integration with a bank's IT vendor, coordinating Bitpanda engineering on open API and architecture questions.
  • Onboarded and mentored the two SEs who joined after me.
N26PostbankEurobankCoinmotion
2021-12 → 2022-12

Solutions Engineer · MessageBird · Valencia

  • Designed omnichannel customer journeys on low-code and API products for European enterprises.
  • Technical partner to sales on CPaaS, CCaaS and UCaaS deals.
2019-10 → 2021-12

Solutions Architect · Vonage · Singapore

  • Owned the technical lifecycle of $1M+ ARR deals, from pitch to go-live.
  • Grew the Video API business in India and Indonesia, with large healthcare and EdTech deployments.
  • Ran workshops and webinars; answered RFPs, RFIs and security questionnaires.
2015-08 → 2019-09

Presales Consultant · Nexmo · Singapore

  • Built the first messaging API demos for APAC, reused across the regional sales team.
  • Built proofs of concept and technical proposals; fed product gaps back to product teams.
2011-02 → 2015-08

Network Operations Analyst · Visa · Singapore

  • Supported issuers, acquirers and merchants on authorisation and transaction issues across VisaNet.
  • Kept the network running for 250 banks and processors in APAC and LATAM; supported migrating 30+ sites to MPLS.

Projects

Portfolio · 2026
Reference architectureIn progress

Adding crypto trading to a bank: an integration blueprint

An interactive map of how a regulated bank plugs in a custody and trading provider: customer onboarding, fund flows, settlement, reconciliation and where MiCA controls sit.

Architecture · Sequence diagrams · MiCA
Working demoIn progress

Stablecoin payout sandbox

A small Node.js app that runs a full payout against a mock provider API: quote, transfer, webhook confirmation and ledger update. The kind of demo I'd build for a first technical call.

Node.js · REST · Webhooks · AWS
Sales toolIn progress

Business case calculator for crypto-as-a-service

A model a bank's product team can use to size revenue, costs and break-even for launching crypto trading through a partner, with assumptions they can change.

Interactive model · Unit economics
EnablementIn progress

Due-diligence playbook for digital-asset vendors

How to run a bank's security and vendor review without stalling the deal: what procurement asks, who owns each answer, and how DORA and MiCA requirements map to it.

Security reviews · DORA · MiCA · RFPs

Skills

Payments and digital assets

Card networks (VisaNet), payment and settlement flows, custody and trading APIs, institutional crypto infrastructure, regulated environments.

Integrations

REST APIs, webhooks, authentication, system architecture, Node.js, AWS.

Solutions engineering

Discovery and qualification, solution design, demos and PoCs, workshops, security assessments and RFPs, delivery handoff, mentoring.

Audiences

Banks, brokers, neobanks and regulated enterprises. C-level, product, security, compliance and engineering teams.

Education and certifications

Education
  • BEng Telecommunications EngineeringUPC Barcelona · 2003–2007
  • Master's in Occupational Risk PreventionUPC Barcelona · 2008–2009
Certifications
  • AWS Solutions Architect – Associate2024
  • Google Cloud: Create and Manage Cloud Services2021
  • WebRTC Integrator, SSCAThe SIP School · 2018–2020
  • CCNPCisco · 2013–2014
Languages
  • SpanishNative
  • CatalanNative
  • EnglishFluent