Tejeswini Sundaram
Software Engineer at aws awslabs
Seattle, Washington, United States
Summary
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RockstarTejeswini Sundaram is a software engineer with seven years of experience specializing in backend security and cryptography, currently contributing to AWS Cryptography from Seattle. She has hands-on expertise implementing and testing TLS/SSL protocols—notably contributing to the widely used aws/s2n-tls project—working on ECDHE key exchange, PSK, application traffic secrets, and OpenSSL EVP_PKEY integrations. Her work combines rigorous security remediation with pragmatic refactors to modern s2n_ecc_evp APIs, demonstrating both deep protocol knowledge and maintainable code discipline. Colleagues rely on her for shipping secure communications features and test vectors that prevent regressions in high-assurance systems. An underrated strength is her ability to translate cryptographic primitives into robust, testable engineering components that scale in production.
7 years of coding experience
Github Skills (13)
crypto10
c1710
it-security10
mtls10
c9910
ssl10
tls1210
c1110
openssl10
tls1310
cryptography10
libtls10
security10
Programming languages (7)
Github contributions (5)
aws/s2n-tls
Oct 2019 - Jun 2021
An implementation of the TLS/SSL protocols
Role in this project:
Back-end & Security Engineer
Back-end & Security EngineerContributions:3 releases, 622 reviews, 51 commits in 1 year 7 months
Contributions summary:Tejeswini contributed extensively to the implementation and testing of TLS/SSL protocols, focusing on areas such as key exchange, application traffic secrets, and pre-shared keys (PSK). They added test vectors and implemented features using OpenSSL EVP_PKEY APIs for ECDHE key exchange. Moreover, the user refactored code to utilize new s2n_ecc_evp APIs and addressed security vulnerabilities, demonstrating a strong focus on secure communication protocols.
cryptographysslc99tlscrypto
ttjsu-aws/s2n
Dec 2019 - Jun 2021
s2n : an implementation of the TLS/SSL protocols
Contributions:265 commits, 2 PRs, 861 pushes in 1 year 6 months
ssltlsssl-tlss2nprotocols
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