Senior Software Engineer (Trust)

CrossTalent; España; Remote; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Remote work flexibility

Stock options

Extra recharge days

Medical, dental, and vision insurance

Learning and Development budget

Sabbatical leave after 5 years

Job summary

Veriff is seeking a Senior Software Engineer to join the Trust team. You will build backend services that validate identity data against country-specific sources, expanding global coverage and ensuring reliable launches.

You will model diverse upstream data, implement robust testing, monitoring, and on-call practices, and collaborate with Product, Compliance, and data providers to maintain trust online.

Qualifications

• 5+ years of experience building large-scale backend applications in Python.
• Experience integrating with third-party APIs at scale.
• Ownership of production-critical services and on-call experience.
• Strong data modelling for multi-source data.
• Solid understanding of modular design and SOLID principles.
• Experience building scalable APIs.
• Relational database fundamentals.
• Observability and logging practices knowledge.
• Strong communication with Product, Compliance, and data partners.
• GDPR/regulatory data residency familiarity.

Responsibilities

• Design, build, and operate Veriff Trust backend services — integrations with external identity data sources and validation logic.
• Expand global coverage by onboarding new countries and data sources.
• Model heterogeneous upstream data into clean verification results.
• Ensure resilience to upstreams with timeouts, retries, idempotency, backpressure, and monitoring.
• Handle sensitive personal data with regional data residency and compliance from the start.
• Participate in on-call rotations, incident response, and postmortems.
• Drive engineering quality via code reviews, CI, runbooks, and mentoring teammates.

Skills

Python

Async architectures

Message queues

APIs

Third-party integrations

Reliability

Data modelling

SOLID principles

Relational databases

Observability

Testing strategies

Communication

GDPR/data privacy

Kubernetes

Tools

SQS

RabbitMQ

Kubernetes

Job description

About The Role

Beneath a simple yet elegant user interface lies a complex system of functionalities. Our AI-powered product uses advanced image recognition, facial verification, face recognition, facial anti-spoofing (liveness detection), and behavior analysis to make identity decisions. We help our partners build onboarding processes that ensure good people get things done and bad folks get stopped. But knowing who someone is only gets you halfway. The next question is whether they can be trusted — and answering it means checking a person's identity data against the authoritative sources that hold the truth. Every country does this differently: a different registry, a different database, a different set of rules about what can be checked and how. To take our platform to the next level, we're looking for a Senior Software Engineer to join the Trust team. This team builds and operates the services that validate a person's identity data against country-specific authoritative sources — government registries, national databases, AML and sanctions screening — and turns that patchwork of very different upstreams into a single, dependable trust signal our customers can act on. Alongside sibling teams like Trust Registries and Trusted Documents, your work directly determines how many countries we can cover, how fast we can launch a new one, and how much our partners can rely on the answer we give them. YOU'LL HELP US PROTECT HONEST PEOPLE ONLINE BY:

• Designing, building, and operating Trust's backend services — the integrations with external identity data sources and the validation logic on top of them — with a strong focus on reliability, scalability, and maintainability
• Expanding our global coverage: onboarding new countries and data sources quickly, and building the abstractions that make the next integration cheaper than the last one instead of more expensive
• Modelling messy, inconsistent upstream data into consistent, well-defined verification results — including the matching and validation rules that decide whether the data actually belongs to the person in front of us
• Making our systems resilient to upstreams we don't control — timeouts, retries and idempotency, backpressure, circuit breaking, graceful degradation, backwards-compatibility testing, SPOF elimination, and end-to-end monitoring of every provider we depend on
• Handling sensitive personal data responsibly, with regional data residency and compliance requirements designed in from the start
• Participating in on-call rotations, incident response, and postmortems to ensure our most critical checks stay healthy
• Driving engineering quality through code reviews, CI practices, runbook documentation, and mentoring teammates YOU ARE THE RIGHT FUTURE VERIFFIAN FOR THE JOB IF YOU HAVE:
• 5+ years of experience building large-scale backend applications with Python, including event-driven and async architectures with message queues (e.g. SQS, RabbitMQ, or similar)
• Hands-on experience integrating with third-party APIs at scale — and a healthy respect for what happens when they're slow, flaky, undocumented, or quietly change their response format
• Proven ownership of production-critical services — you understand what it means to be on-call and take reliability seriously
• Strong data modelling instincts — you can turn heterogeneous, inconsistent external data into a clean domain model that holds up as the number of sources grows
• Strong understanding of modular design approaches and SOLID principles
• Hands-on experience building scalable, maintainable APIs
• Proficiency in a range of testing strategies that ensure robust and reliable software, including testing against external dependencies you can't fully control
• Solid understanding of relational database fundamentals
• Familiarity with structured logging and observability practices
• Strong communication skills — you can clearly articulate technical ideas to engineers and non-engineers alike, and work comfortably with Product, Compliance, and external data providers NICE TO HAVE
• Experience with identity verification, KYC/AML, financial services, or government/registry integrationsExperience working under data privacy and regulatory constraints (GDPR, regional data residency)
• Event-driven systems, workflow or orchestration engines, or Kubernetes You can get familiar with our tech stack on StackShare . Why Veriff ? We are the preferred identity verification platform partner for the world’s most innovative growth-driven organizations helping conveniently verify and safeguard users anywhere in the world. We support the broadest number of identity documents from nearly every country and territory in the world - and this is continually increasing! With a diverse team in the United States, United Kingdom, Spain, and Estonia, as well as robust backing and funding from investors including Accel, Alkeon, IVP, Tiger Capital, and Y Combinator, we’re dedicated to helping businesses and individuals build a safer and more secure world. We strive to be the benchmark for trust online, and we take pride in being a positive force. When you join Team Veriff, we offer you the opportunity to have a real impact and advance your career, while looking after you along the way with a range of benefits designed with you in mind. Some of our favorites include...
• Flexibility to work from home
• Stock options that ensure your share in our success
• Extra recharge days on top of your annual vacation
• Extensive medical, dental, and vision insurance to ensure you’re feeling great physically and mentally
• Learning and Development & Health and Sports budget that you are free to tailor to your own needs
• Four weeks of fully paid sabbatical leave after reaching your 5th work anniversary We are an Equal Opportunities employer committed to a diverse and representative team. Different opinions, perspectives and personalities push us forward. We want to hear from people who are passionate about their work and align with our values. Regardless of race, religion, color, national origin, gender, sexual orientation, age, marital status or disability. We also know the confidence gap and imposter syndrome can get in the way of meeting spectacular candidates - so rest assured, whoever you are, we want to hear from you! Please take the time to read our Recruitment Privacy Notice, which explains how we collect and process your data for recruitment-related activities in accordance with applicable laws. Please read the information carefully. By submitting the application with the required information, you acknowledge that Veriff processes the information for recruitment purposes. Please be informed that in the final stage of the recruitment process, we may request that you undergo identity verification. For more information, please see Recruitment Privacy Notice .

Skills

• Software Engineering