Padmi

Senior Tech Lead Java API / Microservices Lead Developer

United StatesPosted 2 months ago
Software engineeringUnspecified
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Opens the source posting on staffline.compunnel.com

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Senior Tech Lead Java API / Microservices Lead Developer

Ohio, Mason

07/16/2026

Contract

Active

Job Description:

JOB SUMMARY We are looking for a Senior Tech Lead Java API / Microservices Lead Developer to design, build, and support scalable microservices and REST APIs on AWS. This is a backend-only role. You will lead technical design, mentor engineers, and ensure secure, reliable, and high-performance services. The role also requires strong knowledge of AWS S3, Glue-based ELT, and Apache Iceberg tables to support data ingestion, cataloging, and analytics use cases, plus basic AI/ML awareness for integrating with model-driven services.

Key Responsibilities API / Microservices (Java, Spring Boot): Lead the design and development of microservices and REST APIs using Java and Spring Boot. Define API contracts, implement business logic, validations, standardized error handling, and logging. Apply resiliency patterns (timeouts, retries, circuit breakers, idempotency) and drive performance improvements. Conduct code reviews, enforce engineering standards, and mentor team members. AWS & Production Support: Build and operate services on AWS, following security and operational standards (IAM basics, networking awareness, observability). Support CI/CD, release activities, and production troubleshooting. Data Stores: Design and optimize data access with Oracle Aurora MySQL MongoDB. Perform query tuning/indexing guidance and improve service performance and reliability. S3 + Glue + Iceberg / ELT: Work with file and table-based data in Amazon S3 (folder/partition design, access controls, encryption, lifecycle). Support ELT pipelines using AWS Glue (jobs, crawlers, workflows) for ingestion, transformation, and standardization. Design and work with Apache Iceberg tables (schema evolution, partitioning, table properties, compaction/maintenance patterns). Collaborate with data engineering and analytics teams to enable consumption via Athena/Glue Data Catalog (and related query engines). Troubleshoot data pipeline issues (permissions, catalog/table visibility, schema mismatches, performance bottlenecks). AI/ML Awareness (supportive): Integrate services with existing ML inference endpoints; validate payloads and handle model-driven response patterns. Support controlled rollouts for model-dependent features in coordination with ML teams.

Required Qualifications Strong experience in Java and Spring Boot building production APIs/microservices. Strong AWS experience including S3 and security fundamentals (IAM, encryption, least privilege). Hands-on experience with AWS Glue and ELT/data ingestion patterns. Working knowledge of Apache Iceberg tables (or strong experience with lakehouse table formats). Strong database experience with Oracle/Aurora MySQL, plus knowledge of MongoDB. Experience with CI/CD, Git, Maven/Gradle, and automated testing. Strong troubleshooting and communication skills; ability to lead design discussions.

Preferred Qualifications

Athena optimization experience (partition pruning, Iceberg maintenance/compaction strategy). Kafka/event streaming. Docker/Kubernetes (EKS) or ECS. Observability tools: CloudWatch, Splunk/ELK, Prometheus/Grafana, OpenTelemetry. Python for scripting/automation. Security: OAuth2/OIDC, JWT, OWASP, Secrets Manager/Parameter Store. Infrastructure as Code: Terraform/CloudFormation.

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Last Name *

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$(document).ready(function () { var JobId = '5837854'; if (JobId == '') { $(".jobdetail").hide(); $("#headertext").html('Upload Resume'); } else { $("#headertext").html('Submit Resume'); } });

function fillEmailId() { if ($.trim($("#txtEmailIdtoSearch").val()) == "") { showvalidation($("#txtEmailIdtoSearch")); $(".loaderSection").hide(); return false; } else { var Reg = new RegExp("^[_A-Za-z0-9-]+(\.[_A-Za-z0-9-]+)@[A-Za-z0-9]+(\.[A-Za-z0-9]+)(\.[A-Za-z]{2,})$"); var matches = $.trim($("#txtEmailIdtoSearch").val()).match(Reg); if (!matches) { hidevalidation($("#txtEmailIdtoSearch")); showRegExpvalidation($("#txtEmailIdtoSearch")); return false; } else { hideRegExpvalidation($("#txtEmailIdtoSearch")); hidevalidation($("#txtEmailIdtoSearch")); } } } function fillFirstName() { if ($.trim($("#txtFirstName").val()) == "") { showvalidation($("#txtFirstName")); $(".loaderSection").hide(); return false; } else { var Reg = new RegExp("^[a-zA-Z][0-9a-zA-Z .,'-]$"); if (!Reg.test($.trim($("#txtFirstName").val()))) { hidevalidation($("#txtFirstName")); showRegExpvalidation($("#txtFirstName")); return false; } else { hideRegExpvalidation($("#txtFirstName")); hidevalidation($("#txtFirstName")); } } } function fillLastName() { if ($.trim($("#txtLastName").val()) == "") { showvalidation($("#txtLastName")); $(".loaderSection").hide(); return false; } else { var Reg = new RegExp("^[a-zA-Z][0-9a-zA-Z .,'-]$"); if (!Reg.test($.trim($("#txtLastName").val()))) { hidevalidation($("#txtLastName")); showRegExpvalidation($("#txtLastName")); return false; } else { hideRegExpvalidation($("#txtLastName")); hidevalidation($("#txtLastName")); } } } function fillCandidateComments() { if ($.trim($("#txtCandidateComments").val()) == "") { showvalidation($("#txtCandidateComments")); $(".loaderSection").hide(); return false; } else { hidevalidation($("#txtCandidateComments")); } } function fillPhone() { if ($.trim($("#txtPhone").val()) == "") { showvalidation($("#txtPhone")); $(".loaderSection").hide(); return false; } else { var Reg = /(?\d{3})?-? *\d{3}-? *-?\d{4}/g; var matches = $.trim($("#txtPhone").val()).match(Reg); if (!matches) { hidevalidation($("#txtPhone")); showRegExpvalidation($("#txtPhone")); return false; } else { hideRegExpvalidation($("#txtPhone")); hidevalidation($("#txtPhone")); } } } function fillResumeTitle() { if ($.trim($("#txtDefDocTitle").val()) == "") { showvalidation($("#txtDefDocTitle")); $(".loaderSection").hide(); return false; } else { hidevalidation($("#txtDefDocTitle")); } } function showRegExpvalidation(ctrl) { $(ctrl).parent().addClass("has-error"); $(ctrl).parent().find("span.freg").show(); $(".loaderSection").hide(); } function hideRegExpvalidation(ctrl) { $(ctrl).parent().removeClass("has-error"); $(ctrl).parent().find("span.freg").hide(); $(".loaderSection").hide(); } function showvalidation(ctrl) { $(ctrl).parent().addClass("has-error"); $(ctrl).parent().find("span.freq").show(); $(".loaderSection").hide(); } function hidevalidation(ctrl) { $(ctrl).parent().removeClass("has-error"); $(ctrl).parent().find("span.freq").hide(); $(".loaderSection").hide(); } function ValidateData() { var isProceedToSave = true; $(".loaderSection").show();

if ($.trim($("#txtEmailIdtoSearch").val()) == "") { showvalidation($("#txtEmailIdtoSearch")); isProceedToSave = false; } if ($.trim($("#txtFirstName").val()) == "") { showvalidation($("#txtFirstName")); isProceedToSave = false; } else { var Reg = new RegExp("^[a-zA-Z][0-9a-zA-Z .,'-]$"); if (!Reg.test($.trim($("#txtFirstName").val()))) { hidevalidation($("#txtFirstName")); showRegExpvalidation($("#txtFirstName")); isProceedToSave = false; } } if ($.trim($("#txtLastName").val()) == "") { showvalidation($("#txtLastName")); isProceedToSave = false; } else { var Reg = new RegExp("^[a-zA-Z][0-9a-zA-Z .,'-]$"); if (!Reg.test($.trim($("#txtLastName").val()))) { hidevalidation($("#txtLastName")); showRegExpvalidation($("#txtLastName")); isProceedToSave = false; } } if ($.trim($("#txtPhone").val()) == "") { showvalidation($("#txtPhone")); isProceedToSave = false; } if (isProceedToSave) { var fileUpload = $("#FileUpload2").get(0); var files = fileUpload.files; if (files.length == 0) { ShowErrorNotification("Please attach a resume."); $(".loaderSection").hide(); isProceedToSave = false; } return isProceedToSave; } else { ShowErrorNotification("Whoops! Looks like you've missed entering some data. Please enter data in the highlighted fields."); $(".loaderSection").hide(); window.scrollTo(10, 10); return isProceedToSave; } }

function SubmitResume() { if (ValidateData()) { var FileName = ''; var JobId = '0';

if ('5837854' != '') JobId = '5837854';

var txtemailid = $("#txtEmailIdtoSearch").val(); $.ajax({ url: '/Support/GetCandidateDetailByEmailId', type: "GET", dataType: "JSON", data: { CandidateEmail: txtemailid, JobId: JobId }, success: function (data) { if (data == "exists") { $(".loaderSection").hide(); ShowErrorNotification("You are already submitted to this position."); return false; } else //If email does not exist { if (data.Resume_Id != undefined && data.Resume_Id != null && parseInt(data.Resume_Id) > 0) { SubmitDocument(data.Resume_Id, 0, 1); } else { UploadDocUsingAPI(); } } } }); } else $(".loaderSection").hide(); } function UploadDocUsingAPI() { var fileUpload = $("#FileUpload2").get(0); var files = fileUpload.files; if (files.length == 0) { ShowErrorNotification("Please attach a resume."); $(".loaderSection").hide(); return false; }

if (files.length > 0) { if (window.FormData !== undefined) { var data = new FormData(); for (var i = 0; i 0) { SubmitDocument(data.candidateId, 1, 0); // $(".loaderSection").hide(); } else { ShowErrorNotification(data.EventStatusStatus); $(".loaderSection").hide(); } //callback(data.UploadedFileName); }, error: function (err) { ShowErrorNotification(err.statusText); $(".loaderSection").hide(); window.scrollTo(10, 10); return false; } }); } else { alert("This browser doesn't support HTML5 file uploads!"); } } } async function SubmitDocument(Resume_Id, Datafrom, IsExist) { var FileName = ''; var JobId = '0'; var RecId = '0'; var Source = '4414'; var EntityGroup = '2321'; var SubSource = '13304';

if ('5837854' != '') JobId = '5837854';

if ('0' != '') RecId = '0';

if (Datafrom == 0) { // Wait for the document upload to complete FileName = await UploadCandidateDoc(); if (!FileName) { ShowErrorNotification("Whoops! Looks like some issues in uploading resume. Please try again."); return; // Exit if upload failed } } var ResumeDetails = $.param({ Email_Id: $("#txtEmailIdtoSearch").val(), FirstName: $("#txtFirstName").val(), LastName: $("#txtLastName").val(), Phone: $("#txtPhone").val(), CandidateComments: $("#txtCandidateComments").val(), JobId: JobId, UploadedFileName: FileName, ResumeId: Resume_Id, Datafrom: Datafrom, RecId: RecId, IsExist: IsExist, Source: Source, EntityGroup: EntityGroup, ResumeFromJobPortal: 1, UploadedDocName: $.trim($("#txtDefDocTitle").val()), SubSource: SubSource }); $.ajax({ url: '/Support/UploadResumeForJobPortal', type: "POST", dataType: "JSON", data: ResumeDetails, success: function (data) { if (data.headerCode == "20001") { ShowSaveNotification(data.EventStatusStatus); $(".loaderSection").hide(); window.scrollTo(10, 10); } else if (data.headerCode == "10001") { ShowErrorNotification(data.data.errorDetail); $(".loaderSection").hide(); window.scrollTo(10, 10); } else if (data.headerCode == "20003") { ShowErrorNotification(data.EventStatusStatus); $(".loaderSection").hide(); window.scrollTo(10, 10); } else { ShowErrorNotification(data.PortalJob_Status); $(".loaderSection").hide(); window.scrollTo(10, 10); } } }); }

// Function to convert a file to base64 async function fileToBase64(file) { var base64String; const createPromise = new Promise((resolve, reject) => { const reader = new FileReader(); reader.readAsDataURL(file); reader.onload = () => resolve(reader.result); reader.onerror = (error) => reject(error); });

await createPromise.then((promisedata) => { base64String = promisedata; });

return base64String; }

function getFileExtension(filename) { if (!filename || !filename.includes('.')) { return ''; } return filename.split('.').pop(); }

function getFileName(filename) { if (!filename || !filename.includes('.')) { return filename; } return filename.split('.').slice(0, -1).join('.'); }

//Upload Document - Returns Promise async function UploadCandidateDoc() { var fileUpload = $("#FileUpload2").get(0); var files = fileUpload.files;

if (files.length == 0) { ShowErrorNotification("Please attach a resume."); $(".loaderSection").hide(); return null; }

if (files.length > 0) { if (window.FormData !== undefined) { var strFileNameWithoutExt = getFileName(files[0].name); var strFileExt = getFileExtension(files[0].name); var strNewFileName = strFileNameWithoutExt.replace("//", "").replace("+", "").replace("*", "").replace(" ", "").replace(":", "").replace(".", "") + "_" + "7" + "24" + "2026" + "17" + "18" + "32" + "." + strFileExt;

var fileBase64String; if (files[0]) { fileBase64String = await fileToBase64(files[0]); } var data = JSON.stringify({ docType: 9001, fileName: strNewFileName, encodedData: fileBase64String.split(',')[1], pjEmployeeId: null, placementTrackerId: null, employeeDetailsId: null });

var encodedData = btoa(data);

// Return a Promise instead of using callback return new Promise((resolve, reject) => { $.ajax({ type: "POST", url: 'https://stafflineapi.compunnel.com/' + "document/upload", contentType: "application/json; charset=utf-8", data: JSON.stringify({ data: encodedData }), timeout: 30000, json: true, headers: { "Authorization": 'qwerty~!@', }, success: function (result) { resolve(strNewFileName); }, error: function (err) { ShowErrorNotification(err.statusText); $(".loaderSection").hide(); window.scrollTo(10, 10); reject(null); } }); }); } else { alert("This browser doesn't support HTML5 file uploads!"); return null; } } return null; } $(function () { if ($('.formSection').offset() != undefined) { var stickyHeaderTop = $('.formSection').offset().top; $(window).scroll(function () { if ($(window).scrollTop() > stickyHeaderTop - 100) { $('.fixedBTN').addClass('btnFixed').css({ position: 'fixed', top: '65px', margin: '0px' });

} else { $('.fixedBTN').removeClass('btnFixed').css({ position: 'static', top: '0px', 'margin-top': '20px' });

} }); }; });

function ShowSaveNotification(strText) { $('.rightcontainer').find('p').text(strText); $('.rightcontainer').css({ 'opacity': '0', top: "50px" }).show(); $('.rightcontainer').stop().animate({ 'opacity': '1', top: "-=50px" }, 1000, function () { $(this).delay(3000).fadeOut(900); }); }

function ShowErrorNotification(strText) { $('.cross').find('p').html(strText); $('.cross').css({ 'opacity': '0', top: "50px" }).show(); $('.cross').stop().animate({ 'opacity': '1', top: "-=50px" }, 1000, function () { $(this).delay(3000).fadeOut(900); }); //$('.cross').show(); }

function ShowWarningNotification(strText) { $('.warning').find('p').html(strText); $('.warning').css({ 'opacity': '0', top: "50px" }).show(); $('.warning').stop().animate({ 'opacity': '1', top: "-=50px" }, 000, function () { $(this).delay(4000).fadeOut(900); }); }

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