Sajid Hussain

Sajid Hussain

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Senior Software Engineer | Senior Backend Engineer | Senior iOS Engineer
Stockholm, Stockholm County, Sweden
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Starting at USD30/hour
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Starting at USD30/hour
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Timeline

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Résumé

Jobs verified_user 0% verified
  • Klarna
    Senior Software Engineer
    Klarna
    Oct 2024 - Current (2 years 1 month)
    • Member of the backend team responsible for consumer purchases initiated in physical retail stores.
    • Monitoring the health and performance of relevant microservices.
    • Solving technical issues faced by merchants.
    • Generating and validating QR codes for in-store purchases.
    • Fixing reported bugs and enhancing microservices.
  • SnabbTech
    Application Support Engineer
    SnabbTech
    Jan 2024 - Oct 2024 (10 months)
    • Worked in the capacity of Level 2 support.
    • Provided technical support for DropWizard and Spark based Java applications.
    • Did troubleshooting and diagnosing problems in server.
    • Coordinated with Level 3 engineers for solving problems.
  • Efficy
    Senior Backend Engineer
    Efficy
    Jul 2023 - Dec 2023 (6 months)
    • Contributed to maintain a Big Data Engine for the APSIS ONE.
    • Contributed in transforming ORC files from S3 to Riak via Step Functions.
    • Found, raised and fixed: https://github.com/quarkusio/quarkus/issues/36810
    • Involved in DevOps and support apart from development work.
  • PFC Personal Finance Co PFC Technology AB
    Senior iOS Engineer
    PFC Personal Finance Co PFC Technology AB
    Oct 2022 - Jul 2023 (10 months)
    • Extended and maintained P.F.C. iOS application.
    • Implemented KYC questions and answers and Savings Account opening in full.
    • Collaborated with a cross function team to define and design application features.
  • PrimusTech Pte Ltd
    Senior Software Engineer
    PrimusTech Pte Ltd
    Jan 2022 - Sep 2022 (9 months)
    • Was part of R&D team doing POCs for proposed solutions.
    • Integrated an IP Camera with the existing BMS.
    • Designed and implemented a Windows based EMS from scratch.
  • DHL IT Services
    Technical Architect
    DHL IT Services
    Jan 2020 - Dec 2021 (2 years)
    • Worked in the capacity of advisory and hands on engineer.
    • Compared hybrid mobile application frameworks and drafted a complex matrix.
    • Reviewed the former DHL Express mobile app and proposed UX improvements.
    • Lead the effort of developing DHL Express iOS application.
    • Worked with PMO to develop the project plan and track its progress.
    • Actively reviewed the proposed UI and UX for DHL Express iOS application.
    • Also proposed technological solutions after doing POCs.
    • Mentored and reviewed junior team members' work.
  • CoSMo Software Consulting Pte Ltd
    Mobile & Test Automation Lead
    CoSMo Software Consulting Pte Ltd
    Mar 2017 - Feb 2020 (3 years)
    • Worked as Test Automation, Java & Mobile Technical Lead.
    • Architected, maintained and shipped Google's WebRTC KITE.
    • Added cloud-based Load Testing capabilities in KITE.
    • Designed and developed a WebRTC client application for MAC OS.
    • Explored and researched WebRTC integration in React-Native, CMake and Qt.
    • Contributed in the effort around seamless multiplatform WebRTC builds.
    • Served those clients: Symphony, WaveCell, RingCentral and DarkMatter.
    • Supervised juniors in their software development effort.
  • Razer
    Senior Software Engineer
    Razer
    Apr 2016 - Mar 2017 (1 year)
    • Worked as iOS Project Lead in peripherals team.
    • Notable work includes running nginx and ffmpeg from inside an iOS app.
    • Involved in release and sprint planning.
  • HonestBee
    Mobile Technical Lead
    HonestBee
    Jul 2015 - Mar 2016 (9 months)
    • Worked as iOS Team Lead.
    • Lead the effort of implementing consumer and shopper apps from scratch.
    • Hired, onboarded and mentored the mobile team.
    • Developed and maintained coding standards.
    • Contributed to the application design by validating the ideas.
  • Temasys
    Mobile Technical Lead
    Temasys
    Nov 2013 - Jun 2015 (1 year 8 months)
    • Worked as Mobile Technical Lead.
    • Contributed in 5518, 5671 and 5674 revisions to Google WebRTC implementation (https://issues.webrtc.org/issues?q=shussain).
    • Designed, implemented and maintained SKYLINK SDK for iOS and Android.
    • Designed the file transfer protocol for SKYLINK based on TFTP.
    • Worked on WebRTC plugin installers for Safari and Internet Explorer.
    • Also had contributions in SKYLINK messaging protocol.
  • The Ching Chong Group TCCG
    Senior Software Engineer
    The Ching Chong Group TCCG
    Apr 2012 - Oct 2013 (1 year 7 months)
    • Developed and maintained location based social media and news aggregator application Feecha for iOS.
    • Developed microservices using Google App Engine with Google Cloud SQL and MySQL’s GeoSpatial Extensions.
    • Maintained Amazon EC2 instances with java-based scheduling services to detect faces and text in images with Amazon SQS.
    • Implemented keyword extraction and text summary using NLP based tools.
  • NUBEE PTE LTD
    Senior Game Programmer
    NUBEE PTE LTD
    Nov 2011 - Mar 2012 (5 months)
    • Enhanced casual and social games for iOS and Android like JapanLife.
    • Wrote code in C++, OpenGL, Android NDK and Unity 3D.
    • Wrote photoshop plugins code using Adobe Photoshop SDK.
  • Confiz
    Technical Lead & Head Mentor
    Confiz
    Jun 2011 - Oct 2011 (5 months)
    • Worked as a Technology Mentor for iOS, Android and RoR teams.
    • Did software requirements analysis and estimation.
    • Held interviews, code reviews and technical sessions.
  • B
    Principal Software Engineer
    Brilliant Gamez Labs
    Aug 2010 - May 2011 (10 months)
    • Worked as a Technical Lead to develop games for iOS and Android platforms.
    • Learnt NGCore SDK for Mobage at its infancy and lead teams to deliver titles.
    • Contributed in cocos2d code to support various game programming teams.
    • Participated in mentoring, technical sessions and trainings.
    • Explored Marmalade SDK formerly known as Airplay for game development.
    • Notable app store titles: Dream Fish, Tap Jurassic, Titans Vs. Olympians.
  • ic Inc
    Principal Software Engineer
    ic Inc
    Apr 2008 - Aug 2010 (2 years 5 months)
    • Maintained numerous backend-scheduling services written in Java, responsible for calling various database operations for IBM Informix.
    • Involved in problem solving for FTP/FTPS/SFTP and database locks.
    • Implemented a commons DBCP wrapper to enhance connection pooling (Actually did the database connection caching in it).
    • Improved the performance of Email and SMS sending.
    • Did enhancements and bug fix in the code base.
    • Major clients included Western Union, T-Mobile and Payoneer.
  • PixSense
    Senior Software Engineer
    PixSense
    Nov 2006 - Mar 2008 (1 year 5 months)
    • Developed and maintained Java Struts based mobile media uploading web application with core HTML and JavaScript based client.
    • Lead small teams to deliver customized version of the application to Telenor Pakistan, Vodafone Ireland and Germany.
    • Implemented admin tools and registration modules.
    • Did SMSE integration with backend applications.
  • Verticity
    Software Engineer
    Verticity
    Jun 2006 - Nov 2006 (6 months)
    • Worked on Windows Native Applications.
    • Did analysis and design for software projects.
    • Wrote code in C#, VC++ and Visual Basic.
  • Smartmicros
    Software Engineer
    Smartmicros
    Feb 2005 - May 2006 (1 year 4 months)
    • Lead from 3 to 10 people teams in System Architect role.
    • Maintained a servlet-based web application [imobile.us].
    • Did development in Java Swing with server in C++ connected via UDP sockets.
    • Implemented Challenge Response Authentication between a Java program and Windows Active Directory using JNDI and jCIFS.
    • Worked on a columnar database engine designed for fast record retrieval.
    • Also wrote text folding validation tools in C++.
  • K
    Computer Instructor
    KARACHI
    Oct 2003 - Jan 2005 (1 year 4 months)
    • Taught computer courses at Bright Scope, Eurotech and TLW.
    • Courses included Java, C/C++, P/L SQL, Visual Basic, JavaScript and HTML.
    • Responsibilities also included maintenance of computers and accessories in lab.
  • F
    Forex Trader
    FOREX CAPITAL MARKETS LIMITED
    May 2002 - Sep 2003 (1 year 5 months)
    • Worked as a financial consultant with BOND STREET, White House Securities and PINDEX.
    • Merely traded in spot currency market.
    • Marketed the financial products and managed customer funds.
Education verified_user 0% verified
  • Virtual University of Pakistan
    Master of Business Administration - MBA, Management Information Systems, General
    Virtual University of Pakistan
    Jan 2006 - Dec 2009 (4 years)
  • Shah Abdul Latif University Khairpur
    Bachelor of Computer Science, Computer Software Engineering
    Shah Abdul Latif University Khairpur
    Jan 1999 - Dec 2001 (3 years)
  • S
    Higher Secondary Certificate, Pre-Engineering
    Sind Muslim Govt Science College
    Jan 1996 - Dec 1998 (3 years)
  • Y
    Secondary School Certificate, Science
    YMCA Secondary School
    Jan 1986 - Dec 1996 (11 years)
Projects (professional or personal) verified_user 0% verified
  • T
    Titans vs Olympians on Mobage Japan Platform
    Jan 2011 - Apr 2011 (4 months)
    Lead of the team which ported iOS Titans vs Olympians game on the first launch of ngmoco:) Mobage Japan platform. The game was coded in JavaScript.