Abu Sadat Md. Sayem

Hi, I'm a software developer from Bangladesh. Currently working as an Assistant Lead Engineer at bKash Limited.

I have 7+ years of scalable software design and development experience. During this time, I have developed applications on different verticals including Fintech, Messaging, Audio/Video streaming, EdTech, HealthTech and so on.

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Abu Sadat Md. Sayem

Experience

bKash Limited

June 2023 – Present

  1. Assistant Lead Engineer, Software Development, Research & Engineering

    Promoted
    May 2026 – Present

    Led backend development for Mastercard Add Money and secure card saving in the bKash app.

    Built scalable Go backend services for bKash Forest (বিকাশ বন).

    GoPayment Card Processing

  2. Senior Engineer, Software Development, Research & Engineering

    June 2023 – April 2026

    Launched the bKash Visa & Amex Native Add Money service and passthrough transactions (direct Visa-to-merchant payments), driving increased user adoption and engagement.

    JavaSpring BootDynamoDBRedisMavenDocker

Durbin Labs Ltd.

June 2022 – May 2023

  1. Senior Software Engineer

    Developed scalable Learning Management Systems and Telemedicine applications with cutting-edge technology

    Led a web team in developing and maintaining web applications consisting of 4 developers.

    GoNode.jsTypeScriptNest.jsExpress.jsWebSocketsReact.jsMongoDBRedisDockerAWSNGINX

TigerIT Bangladesh Ltd.

March 2021 – May 2022

  1. Software Engineer

    Built a modern enterprise video communication cloud platform with cutting edge technology

    PythonNode.jsPython-FlaskMQTTReact.jsPostgreSQLRedisCeleryTwilioVoIP

Durbin Labs Ltd.

September 2019 – February 2021

  1. Software Engineer

    Built next-generation cloud solutions for the international market.

    Actively involved in full-stack development in cloud platforms using Node.js, Vue.js, and WebRTC.

    Node.jsExpress.jsWebSocketsVue.jsMongoDBRedisReact.jsAWSNGINX