Software Engineer

This is a Software Engineer opportunity with a leading mobile and telecom network software vendor in the FONES Protect business unit. This business unit is responsible for providing cloud-native call protection platforms and SOA-based data services to telecom operators, enabling real-time call treatment, subscriber management, and integration with carrier network infrastructure. The engineer's primary focus will be developing and maintaining an AWS-native, high-availability call protection system that delivers real-time nuisance call blocking and subscriber management for fixed-line and mobile network subscribers. Additionally, the engineer will support the broader FONES Protect application portfolio, contributing to REST and other endpoints, data feeds in and out of data warehouses and transactional data stores, as well as interconnecting services for interfacing with third-party data and service providers, such as telephony application servers, regulatory agency gateways, and billing/provisioning systems.

We are looking for a great team player who is positive, self-motivated, energetic and a quick learner with commitment to quality and dedication to long-term success. A successful candidate must demonstrate strong analytical and problem-solving skills.

We provide a friendly work environment, access to cutting-edge technology and the ability to work on highly challenging projects that are second to none in the industry.

What you'll be doing:

• Develop and maintain REST API endpoints, enabling secure and demonstrably performant data exchange with telecom operator portals, carrier network systems, and cloud infrastructure
• Develop and enhance the real-time call treatment engine responsible for evaluating incoming calls against priority-ordered list hierarchies at scale
• Develop parts of the solution responsible for storing and retrieving data from the various data stores, including NoSQL databases, distributed cache systems, object storage, and other cloud data services
• Write software design specifications using modern design patterns
• Design, implement, and write test software for both the delivered solutions and the surrounding architecture
• Work on performance to ensure high scalability is achieved and required KPIs are met
• Develop solutions onto a cloud or an on-premises infrastructure working with Site Reliability Engineers
• Contribute to advancing reliability and performance of the Service Architecture, introduce new performance counters and instrumentation points, as well as work with Operations during the rest of the ALM
• Develop and maintain bulk data import and export pipelines for large-scale list and subscriber operations
• Contribute to observability tooling including structured logging, custom metrics, and alarm integration workflows
• Collaborate with third-party partners and vendors to define, develop, and deliver feature enhancements and integrations
• Participate in the full SDLC lifecycle including requirements gathering, design, implementation, testing, deployment, and production support

What you'll need:

• Requires a bachelor's degree in a related area
• 3-5 years of experience in the field or in a related area
• Solid Java software design skills, backed by 3-5 years of experience
• Experience with Spring Boot for building production REST API services
• Experience developing software for Linux
• Thorough understanding of algorithms, data structures and software design fundamentals, including software design patterns and practices
• Knowledge of source control management with Git
• Experience with NoSQL databases (DynamoDB preferred) and/or one of the following RDBMSs: MySQL, MS SQL, Oracle and/or Postgres in Java
• Knowledge and Experience with AWS services (ECS/Fargate, DynamoDB, S3, CloudWatch, Lambda, or similar) and experience with deploying solutions in AWS
• Strong verbal and written communication skills
• Ability to work as part of a distributed team as well as communicate directly with third-party partners to gather requirements, align on integration specifications, and coordinate feature delivery
• Ability to resolve difficult technical problems in test as well as production environments

Bonus Points:

• Prior experience in the mobile software industry
• Prior experience in the telecommunication industry
• Development experience with high-performance low-latency fault-tolerant systems
• Fundamental knowledge of the TCP/IP stack and working experience delivering solutions using the newest versions of the HTTP protocol
• Understanding of SIP protocol traffic, signaling paradigms, and VoIP call flow concepts
• Kubernetes or Docker Deployment Experience
• DynamoDB Global Tables and multi-region active-active architecture experience
• Experience with ECS Fargate and container-based microservice deployments
• Experience with CloudWatch metrics, alarms, and observability pipelines
• CI/CD knowledge
• Experience with Databricks
• Experience with Kinesis Firehose or similar streaming/event-driven architectures
• Knowledge of AWS Cognito or similar OAuth2/JWT token-based authentication systems
• Experience using best practices for efficient and performant SQL code
• Knowledge of TLS/mTLS and/or OAuth2
• Knowledge of ProtoBuf and gRPC
• Working knowledge of C++
• Working knowledge of Python
• Working knowledge of the Linux shell scripting