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Job Summary:
JPMorgan Chase is one of the oldest financial institutions, providing innovative financial solutions globally. The Lead Security Engineer will be responsible for building and maintaining a TLS abstraction layer, ensuring secure communications across various programming environments while collaborating with application teams and adhering to enterprise security policies.
Responsibilities:
• Design, implement, debug, and extend the TLS abstraction layer, ensuring consistent TLS configuration and behavior across Java (JSSE/Bouncy Castle), Python (ssl/OpenSSL bindings), and Node.js (built-in TLS/OpenSSL) runtimes.
• Serve as the team's subject-matter expert on TLS 1.2 and 1.3 handshake mechanics, cipher suite negotiation, certificate validation, key exchange algorithms, and session resumption — and translate that expertise into library design decisions.
• Architect clean, well-documented APIs that decouple application-level TLS intent (e.g., minimum protocol version, allowed cipher suites, certificate pinning, mutual TLS) from the platform-specific implementation details of each runtime's TLS stack.
• Build and maintain comprehensive test suites — including unit, integration, interoperability, and protocol-conformance tests — that verify correct TLS behavior across all supported runtimes and configurations. Develop test harnesses that exercise edge cases such as certificate chain validation failures, protocol downgrade scenarios, and cipher suite mismatches.
• Design, maintain, and improve CI/CD pipelines for the library, including automated builds, multi-runtime test matrices, static analysis, dependency scanning, and artifact publishing across all supported language ecosystems (Maven/Gradle, PyPI, npm).
• Triage and resolve complex TLS-related issues reported by consuming applications, including handshake failures, performance regressions, certificate trust-store misconfigurations, and runtime-specific behavioral differences.
• Monitor developments in TLS standards (IETF RFCs), cryptographic library updates (OpenSSL, Bouncy Castle), and runtime release notes to proactively assess impact on the library and plan necessary updates.
• Produce clear integration guides, migration documentation, and configuration references so that consuming teams can adopt and configure the library with minimal friction.
• Work with application teams, platform engineering, and enterprise security policy owners to gather requirements, communicate breaking changes, and align library capabilities with organizational security mandates.
• Contribute to a team culture of diversity, equity, inclusion, and mutual respect.
Qualifications:
Required:
• Bachelor's degree in Computer Science, Computer Engineering, or a related field; 7+ years of software development experience, with at least 3 years focused on security-sensitive or infrastructure-level library development.
• Strong hands-on development skills in at least two of Java, Python, and Node.js/TypeScript, with a willingness and ability to work across all three. Experience with each language's native TLS/cryptographic APIs (e.g., JSSE, Python ssl module, Node.js tls module).
• Deep understanding of TLS 1.2 and 1.3 — including handshake flows, key exchange mechanisms (ECDHE, DHE), certificate authentication (X.509, chain-of-trust, Certificate Verify), cipher suite semantics, ALPN/SNI, and session management. Familiarity with underlying cryptographic primitives (AES-GCM, ChaCha20-Poly1305, RSA, ECDSA, EdDSA, HKDF).
• Demonstrated experience designing, versioning, and maintaining libraries or SDKs consumed by other engineering teams, including thoughtful API surface design, semantic versioning, and backward-compatibility management.
• Proven experience building multi-dimensional test strategies for security-critical software, including protocol-conformance testing, cross-platform interoperability testing, and negative/adversarial test cases.
• Hands-on experience designing and maintaining CI/CD pipelines (e.g., Jenkins, GitHub Actions, or equivalent), including multi-language build matrices, automated security scanning (SAST, dependency vulnerability checks), and artifact publication.
• Strong diagnostic skills for network-level issues — comfortable using tools like Wireshark, OpenSSL CLI (s_client, s_server), keytool, and language-specific debuggers to trace TLS handshake failures and certificate issues.
• Solid understanding of agile development methodologies, including iterative delivery, code review discipline, and application resiliency principles.
Preferred:
• Experience with cryptographic library internals such as OpenSSL, Bouncy Castle, or LibreSSL.
• Familiarity with FIPS 140-2/140-3 compliance requirements and their impact on TLS configuration and cryptographic provider selection.
• Experience with mutual TLS (mTLS) at scale, including certificate lifecycle management and automated rotation.
• Knowledge of PKI systems, HSMs, or key management infrastructure.
• Experience with container-based build and test environments (Docker, Kubernetes) and cloud platforms (AWS).
• Familiarity with performance profiling of TLS handshakes and bulk-encryption throughput across runtimes.
• Experience using AI-assisted development tools (e.g., GitHub Copilot, Claude Code) to accelerate library development and test generation.
• Relevant certifications such as CISSP, CCSP, or vendor-specific security credentials are a plus but not required.
Company:
With a history tracing its roots to 1799 in New York City, JPMorganChase is one of the world's oldest, largest, and best-known financial institutions—carrying forth the innovative spirit of our heritage firms in global operations across 100 markets. Founded in 2000, the company is headquartered in New York, USA, with a team of 10001+ employees. The company is currently Late Stage.