No longer accepting applications
Lead Java Developer
TelnaTiruppur, IN30+ days ago
Job descriptionBachelor’s or Master’s degree in Computer Science, Electrical Engineering, or related field. 5+ years of hands-on experience developing Java Card applets for SIM, USIM, or eSIM. Deep understanding of : Java Card 3.x / GlobalPlatform 2.x standards APDU communication and ISO 7816 Security domains, SCP02 / SCP03, and OTA mechanisms Experience with SIM / eSIM development and debugging tools (Gemalto, G&D, Thales, VALID, etc.). Strong knowledge of GSMA SGP.02 / SGP.22 / SGP.32 specifications. Experience deploying and testing applets on UICC / eUICC hardware. Proficiency in troubleshooting using logs, traces, and APDU-level analysis. Solid understanding of c ryptography and key management in secure element contexts. Excellent problem-solving skills and attention to detail. Strong communication and documentation skills. Experience with remote SIM provisioning (RSP) environments. Knowledge of OTA platforms and backend integration with SIM lifecycle management systems. Familiarity with embedded systems or secure hardware modules . Previous work in telecom or IoT connectivity environments . Contribute to the advancement of cutting-edge telecom technologies and infrastructure Collaborate with a diverse, experienced, and multicultural team of engineers and industry professionals Enjoy a flexible work environment with remote work options Receive a competitive salary and comprehensive benefits package Grow your career through professional development opportunities and technical training
Job Title : Sr Java Card / eSIM Applet Developer
Location : India Pune
Reports To : Engineering Team Lead
About Telna
Telna provides Mobile Network Operators (MNOs), Communication Service Providers (CSPs), and Original Equipment Manufacturers (OEMs) with a fully managed global cellular connectivity platform. With access to the largest 2G–5G and LTE-M coverage from over 800 radio network operators—300 of which are direct partners—across 200 countries, Telna empowers seamless, high-performance connectivity worldwide.
Our global multi-network connectivity platform simplifies integration, offering localized break-out capabilities via cloud infrastructure. With a single integration into Telna’s platform, millions of devices are powered by resilient, multi-network connectivity—enabling a wide array of innovative cloud-based solutions.
Position Overview
The Senior eSIM Applet Developer will own the entire lifecycle of eSIM Java applet development — from requirements definition and architecture through coding, testing, certification, and deployment. This role requires deep technical expertise in Java Card , SIM / eSIM environments , and secure element application development .
You will collaborate with product, platform, and QA teams to design, develop, and maintain Telna’s next-generation eSIM applets, ensuring compliance with GSMA, ETSI, and GlobalPlatform standards.
Key Responsibilities
- Own full applet lifecycle : from requirements gathering, design, and development to testing, certification, and release.
- Develop and maintain Java Card applets for SIM, USIM, and eSIM (eUICC) environments.
- Implement, debug, and troubleshoot applet logic on various SIM / eSIM platforms and toolchains.
- Collaborate with OEMs, chipset vendors, and MNOs to integrate and validate applet functionality.
- Ensure compliance with GSMA, ETSI, and GlobalPlatform standards for SIM / eSIM applets.
- Conduct code reviews, test case design, and performance analysis.
- Work closely with QA to automate testing and validation in both simulated and real device environments.
- Prepare and maintain technical documentation (design specs, test plans, release notes).
- Stay current with advancements in eSIM technology, secure element design , and Java Card platform updates.
Required Qualifications
Preferred Qualifications
Why Join Us
Create a job alert for this search
Lead Java Developer • Tiruppur, IN
Related jobs
)
- Promoted
Lead Java Developer
TEKsystemserode, tamil nadu, in Java ,Spring Boot, Microservices.Code review & Good hands-on coding.Design, develop, and maintain backend services and components using.
Java Spring Framework / Spring Boot.Show moreLast updated: 30+ days ago
- Promoted
AppScan Product _Sr. Java Developer (Spring Boot, REST APIs & Microservices)
HCL AppScanTiruppur, IN HCL Software” : - Is a Product Development Division of HCL Tech : That operates its primary Software business.At HCL Software we Develop, Market, Sell and Support over 20 Product families in the area...Show moreLast updated: 30+ days ago
- Promoted
Senior Java Developer ( Full-time at a Fortune 500 tech MNC )
HARPErode, IN Strong Hands-on experience in developing JAVA, J2EE, Spring Boot Framework applications, any ESB or middleware tool, Restful APIs.
Strong understanding of microservice & API architecture.Strong know...Show moreLast updated: 5 days ago
- Promoted
- New!
Senior Java Developer
Tata Consultancy ServicesCoimbatore, IN Role : Senior Java Microservice Developer.Hands on experience in Java 8 and Spring Boot (primary skills).Secondary skills required : SQL and one database such as Oracle or MongoDB.Well versed with La...Show moreLast updated: 12 hours ago
- Promoted
- New!
Senior Java / Kotlin Backend Developer | Product Company Background exp is Mandatory
Avensys ConsultingErode, IN Avensys is a reputed global IT professional services company headquartered in Singapore.Our service spectrum includes enterprise solution consulting, business intelligence, business process automat...Show moreLast updated: 12 hours ago
- Promoted
- New!
Java Developer
Autostock Digital LimitedErode, IN Our products include Dealer Management Systems, CRMs, and online marketplaces that connect businesses through smart automation and data-driven technology.
You’ll help design, build, and maintain sca...Show moreLast updated: 12 hours ago
- Promoted
AppScan Product_Technical Lead (Java & C++ Developer)
HCLSoftwareErode, IN Is a Product Development Division of HCL Tech : That operates its primary Software business.At HCL Software we Develop, Market, Sell and Support over 20 Product families in the areas of Customer Exp...Show moreLast updated: 30+ days ago
- Promoted
Senior Scala Developer - Telecom Domain
ACL Digitalerode, tamil nadu, in ACL Digital is actively hiring for experienced.Senior Scala Developer - Telecom.Job Requirement - Senior Java Developer - Telecom.
Preferred Qualification : 5-10 Years Experience (Remote).Computer Sc...Show moreLast updated: 25 days ago
- Promoted
Senior Java Full Stack developer
RiDiK (a Subsidiary of CLPS. Nasdaq : CLPS)tiruppur, tamil nadu, in Job Position Title : -Senior Full Stack Developer (Java / React).Company : CLPS Global or RiDiK Pvt Ltd.Skills : Java,Spring Boot,React Js, CI / CD,SAML / SSO, RESTful API.
We are seeking a Senior Full Stack...Show moreLast updated: 3 days ago
- Promoted
Senior Java Developer
Amicon Hub Serviceserode, tamil nadu, in Hiring for Our Esteemed Client – Senior Java Developer.Virtual Recruitment Drive on 1st November 2025.Senior Java Developers (8+ yrs).
We’re looking for candidates with strong hands-on experience, e...Show moreLast updated: 14 days ago
- Promoted
Senior Technical Lead - Java + AWS
HCLTecherode, tamil nadu, in Experience on building and deploying enterprise-grade backend applications using Java, Hibernate, Spring, and Spring Boot.
Specializes in designing scalable, distributed systems and microservices wi...Show moreLast updated: 5 days ago
- Promoted
Senior Java Developer
Brace Infotech Private LtdCoimbatore, IN Job Title : Senior Java Developer.We are seeking an experienced and highly skilled.Core Java, Spring Boot, and JBoss.SQL, Python, PySpark, and Power BI.
The ideal candidate will also have working kno...Show moreLast updated: 5 days ago
- Promoted
Senior Java Software Engineer - Telecom NMS / EMS
ACL Digitalerode, tamil nadu, in ACL Digital is actively hiring for experienced.Senior Java Developer - Telecom NMS / EMS.Job Requirement - Senior Java Developer - Telecom NMS / EMS.
Preferred Qualification : 5+ Years Experience (Remote...Show moreLast updated: 26 days ago
- Promoted
Delivery Lead
RapidBrainsErode, IN Job Title : Portfolio Lead (Digital Delivery & Strategic Client Transformation).Remote / Hybird / Onsite as permanent employee.
Company : Our Premium Client - German Based.We're seeking an experienced an...Show moreLast updated: 25 days ago
- Promoted
Java Developer
iVedha Inc.Tiruppur, IN Looking for a Senior Java Developer with enterprise experience in regulated sectors, able to build.Design, develop, and maintain enterprise-grade Java applications.
Contribute to architecture, scala...Show moreLast updated: 30+ days ago
- Promoted
Tech Lead – Backend Engineering (Retail Domain | Kafka, Java, AWS)
AMRR TechSols Pvt LtdErode, IN Add location or mention “Remote / Hybrid”].Full-time | Immediate Requirement.Leading decades-old retail player in North America.
Tech Lead – Backend Engineering.You will lead backend development effor...Show moreLast updated: 5 days ago
- Promoted
Senior Solution java Architect
Programmers.ioTiruppur, IN Senior Solution java Architect.We are seeking a Senior Solution Architect with 15+ years of hands-on experience in.Java ecosystem expert (Java 17+, Spring Boot 3) with a strong background in.Additi...Show moreLast updated: 2 days ago
- Promoted
Senior Associate - Java Developer
Cognizanttiruppur, tamil nadu, in We are seeking a skilled Java Developer to design and develop scalable backend systems using Spring Boot and Microservices architecture.
The ideal candidate will also have hands-on experience with A...Show moreLast updated: 5 days ago