Senior Software Engineer

Vonage

Senior Software Engineer designing and developing highly concurrent backend services at Vonage. Leading architectural decisions and mentoring junior engineers in a cloud-native environment.

Posted 7/22/2026full-timeRemote • 🇵🇱 PolandSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and developing highly concurrent, distributed backend services, with a strong focus on performance optimization and architectural decision-making. Proficient in mentoring junior engineers and ensuring high standards in coding practices and testing methodologies.

Highest-signal resume keywords

Go (Golang) ProgrammingJVM Technologies (Java/Spring Boot)Distributed Systems ArchitecturePerformance OptimizationREST/HTTP Service Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Go (Golang)JavaSpring BootDistributed ArchitecturesPerformance ProfilingREST ServicesRelational DatabasesNon-Relational DatabasesUnit TestingIntegration Testing

Soft Skills

Excellent CommunicationMentoring

Tools & Technologies

Containerized ApplicationsCloud-Native EnvironmentsPostgreSQLRedis

Industry Keywords

Enterprise-Grade SystemsHigh AvailabilityCoding StandardsDevelopment Processes

Tech Stack

Tools & technologies

CloudGoJavaPostgresRedisSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Design and develop highly concurrent, distributed backend services with a focus on high availability;
Take solid ownership of architectural contributions, driving technical decisions within and across teams;
Lead performance optimisation efforts and proactively diagnose complex system issues;
Design, develop and test new features, setting a high bar for quality and reliability;
Support the release and documentation of developed features;
Define and champion coding standards and development processes;
Mentor and support more junior engineers within the team;
Provide out-of-hours support as part of an on-call rota.

Requirements

What you’ll need

Strong programming skills in Go (Golang) or deep experience with JVM technologies (Java/Spring Boot) and a strong desire to move to Go;
Proven experience developing and maintaining enterprise-grade systems at scale;
Solid experience with highly concurrent, distributed architectures and systems;
Solid experience contributing to and driving architectural decisions;
Experience with containerised applications and cloud-native environments;
Experience profiling and optimising performance at scale;
Experience building REST/HTTP based services;
Strong experience with relational and non-relational databases (e.g. PostgreSQL, Redis);
Strong test suite design skills, including Unit, Integration and Smoke tests, enabling safe promotion of code to production without manual intervention;
Excellent communication skills, with the ability to articulate complex technical problems and solutions clearly.

Benefits

Comp & perks

Medical Insurance (Allianz)
Life Insurance (Uniqa)
Glasses Reimbursement
Kafeteria (My Benefit)
Discretionary Time Off (DTO)
Volunteer Time (VTO)
Ericsson Care Line