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    Fintech Payments Platform Hardening

    Tightening secrets, pipelines, and runtime controls for a card-present and online stack

    Stronger assurance for auditors and partners without freezing releases
    Client
    Confidential — payments fintech
    Industry
    Financial Services
    Timeline
    4 months
    Technologies
    7+ tools

    The Challenge

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    Long-lived credentials and shared service accounts in legacy microservices

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    PCI scope creep from overlapping environments and ad-hoc debugging access

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    Inconsistent artifact promotion and manual change windows

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    Third-party processors requiring evidence of secure SDLC practices

    Our Solution

    Introduced short-lived tokens, workload identity, and centralized secrets rotation

    Refined environment boundaries with stricter network policies and egress controls

    Standardized build, sign, and promote flows with immutable artifacts

    Added DAST and dependency governance gates with exception workflows

    Packaged evidence collection for SOC 2 and PCI assessors

    Measurable Impact

    Secret hygiene

    Improved

    Critical paths no longer relied on static keys in configuration repos

    Release cadence

    Maintained

    Teams kept weekly trains while controls moved earlier in the pipeline

    Audit prep

    Faster

    Sampled evidence pulled from systems of record instead of spreadsheets

    Partner confidence

    Higher

    Security questionnaires answered with concrete architecture and process detail

    "We had to prove maturity to banks and processors. The work was concrete—fewer exceptions, clearer ownership, and pipelines we could explain."
    H
    Head of security engineering
    Head of Security Engineering, fintech (NDA)

    Technology stack

    HashiCorp Vault
    GitHub Actions
    Kubernetes
    Terraform
    AWS KMS
    Snyk
    OWASP ZAP

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    Fintech Payments Platform Hardening | Case Study | SystimaNX