Senior Site Reliability Engineer

• Deploy and configure Temporal/Camunda or similar Workflow Engine on Kubernetes (self-hosted, production-grade).
• Design and implement SIM Activation workflow: activities for HSS, OCS, PCRF, Inventory update.
• Implement SIM Deactivation workflow with compensation and rollback logic.
• Implement Plan Change workflow (OCS quota update + PCRF policy change).
• Design Inventory Management Database schema: ICCID, IMSI, MSISDN — 30M+ record scale.
• Define workflow versioning strategy (Temporal GetVersion API or similar) — foundational for long-term stability.
• Lead another developer on development tasks and code reviews from week one.
• Order-triggered workflows: Order DB → Temporal/similar signal handler.
• Network trigger handling: location updates → workflow signals via Kong API Gateway.
• Retry policies, dead-letter handling, and alerting per workflow type.
• Temporal production cluster operations and HPA configuration.
• nd-to-end integration testing, load testing, runbook authoring.
• Post go-live hypercare and continuous improvement.

Requirements:

Must Have

• 4–6 years backend software development experience.
• Required: Hands-on experience with a workflow orchestration engine.

– Temporal.io strongly preferred — production experience with workers, activities, signals, timers.

– Camunda, Apache Airflow, or equivalent accepted if strong fundamentals.

• Go or Java — must be comfortable building production services in at least one.
• REST API design and implementation (designing APIs consumed by Kong API Gateway).
• PostgreSQL — schema design, indexes, query optimisation for large datasets (10M+ rows).
• BSS/OSS domain knowledge: provisioning flows, SIM lifecycle, telecom service activation.
• Kubernetes — deploying and operating workloads on K8s (not just writing YAML).
• Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub .
• Experience designing for failure: retry policies, idempotency, compensation logic, DLQ.
• Ability to lead a junior/mid developer day-to-day Fluent English .

Strong Advantage

• Direct Temporal.io production experience (SDK, worker configuration, namespace management).
• Telecom network element experience: HSS, OCS, PCRF, SMSC interfaces.
• Diameter protocol (Ro/Gy/Gx) — even basic familiarity is valuable.
• Experience with mock-first development and contract testing.
• Prometheus + Grafana — instrumenting and monitoring workflow engines.

Nice to Have

• Experience at a telecom operator, MVNO, or telecom vendor (Ericsson, Nokia, Huawei, etc.).
• Knowledge of eSIM / GSMA SGP.22 standard.
• Python — for tooling, scripting, test automation.

About Webbing:

Founded in early 2010, Webbing is a global data MVNO that delivers enterprise grade, global connectivity and IoT services across more than 200 countries and 600+ mobile carriers' networks. Webbing's secured network delivers network protection and web content intelligence.

Enterprise customers can manage, monitor, and optimize data usage in real-time with Webbing's powerful software platform. Gain visibility by application type and have the power to white list applications and limit non-business applications with the click of a button, saving money and improving compliance.

What we offer:

• Fully remote
• The opportunity for professional development within a reputable international innovative and growing company.
• An exciting and challenging greenfield platform with great skill and knowledge development opportunities.
• The opportunity to join a team of highly professional specialists in an international environment.
• The opportunity for professional development within a reputable international innovative and growing company.

Working at Infobip means being part of something truly global. With 75+ offices across six continents, we’re not just building technology — we’re shaping how more than 80% of the world connects and communicates.

As employees, we take pride in contributing to the world’s largest and only full-stack cloud communication platform. But it’s not just what we do, it’s how we do it: with curiosity, passion, and a whole lot of collaboration.

We operate with an AI-first mindset, embedding intelligent tools into our daily workflows to work smarter and more efficiently. Every role here benefits from and contributes to this approach.

If you're looking for meaningful work and challenges that grow you in a culture where people show up with purpose, this is your opportunity.

Let’s build what’s next, together.

Why is this position important at Infobip?
We are looking for engineers who enjoy solving problems, care deeply about quality, and take a data-driven, analytical approach to their work. The role we are hiring for is
Site Reliability Engineer (SRE)
, with a primary focus on driving reliability initiatives and promoting reliability practices across the organization.

For this position, we are specifically seeking an SRE with a strong development background, ideally in backend or full-stack engineering, who is comfortable with scripting and building internal tools.

An SRE in this role understands client use cases, usage patterns, and business impact. They help establish and improve incident management processes, lead post-incident reviews, provide incident metadata and trend analysis, and act as advisors on follow-up actions. Their focus is on promoting a systematic approach to problem-solving and driving long-term solutions.

The team for which we are hiring has a diverse skill set as they come from different backgrounds, from system and software engineering, product management and testing. Over the course of long and varied careers, they have built a broad and valuable skill set that makes them exceptionally strong at handling problems and incidents. Today, they operate as a center of excellence, helping Infobip solve a wide range of complex reliability challenges.

SREs At Infobip Are

• Owners of incident management and its lifecycle
• Aligning incident management processes with the rest of the company
• Streamlining workflows and automating processes
• Driving adoption and monitoring process implementation
• Creating objective, actionable incident reports
• Advisors and experts on reliability topics
• Supporting onboarding and education on reliability practices
• Driving a reliability-focused culture and mindset
• Promoting a blameless incident culture
• Identifying risks and encouraging a systematic approach to problem-solving and long-term improvements
• Partners in defining, developing, monitoring, and maintaining SLOs and SLIs
• Helping teams set meaningful reliability targets for their products
• Providers of a client-centric perspective
• Bringing the client point of view into incident handling and product reliability discussions
• Contributors to faster incident response
• Helping shorten response times across detection, engagement, and resolution through troubleshooting support and continuous improvements
• Builders of internal tooling and automation
• Reducing operational toil and accelerating incident response
• Providers of objective quality insights
• Raising awareness of improvement areas based on historical data
• Delivering actionable insights through quality trends and metrics
• Guiding teams when metrics fall outside expected baselines

What will the main responsibilities be?

• Discovering problems, defining tasks, and solving them with guidance from more senior engineers
• Designing and implementing automation and tooling, such as scripts, services, and dashboards, to improve incident detection and response, reduce manual work, and provide better reliability insights
• Monitoring incidents in a production environment and supporting others during complex incident response situations
• Troubleshooting platform-wide issues by understanding the bigger picture and guiding teams toward resolution of reliability-related problems
• Collaborating with product and development teams to integrate reliability improvements into code and architecture
• Continuously learning about Infobip’s development processes, technologies, system architecture, platform, products, and client segmentation
• Actively participating in incident reviews and learning from incidents
• Communicating problems and solutions at the right level of detail for different audiences involved in incident management
• Sharing problem-solving knowledge within the team and the broader domain

More About You
High school diploma, Bachelor’s degree, or Master’s degree
3+ years in positions like:

• Software Engineer / Backend Engineer / Full Stack Engineer, or
• DevOps / SRE with strong scripting/programming experience

Deep Technical Knowledge In

• Programming or scripting, with solid experience in at least one of the following:

• Java
• Go
• Python
• Bash / PowerShell
• or similar technologies

Familiarity With Most Of The Following

• Monitoring, logging, and alerting tools
• Networking and Linux fundamentals
• System design, architecture, and distributed systems
• Databases and querying languages, both SQL and NoSQL

You are also
proficient in English
and have a good understanding of the development process, risk analysis, and problem-solving. We value a strong client focus, teamwork, curiosity, eagerness to learn, technical competence, execution efficiency, a continuous improvement mindset, and strong analytical and communication skills.

Why you'll love it here

• Financial rewards & recognition - A fair compensation aligned with your experience, industry, and market standards, performance-driven bonuses, regular reviews to support your growth and recognize your contributions, and a culture that values your impact.
• ESOP (Employee Stock Ownership Plan) - As an Infobip employee, you’ll have the opportunity to share in our company’s success through stock options.
• Lunch covered by the company
• Attractive credit terms: Available at predefined financial institutions.
• Flexible work arrangements - combine in-person collaboration with remote work and flexible working hours - start between 7 AM and 10 AM
• Work-life balance and Well-being  - We offer time off when you need it, special leave days for life’s big moments, and a flexible hybrid work model tailored to local regulations.
• Career mobility - Your career is a journey. With internal mobility, upskilling, and mentorship, we help you shape your path.
• Professional development - Learning never stops. Onboarding, mentorship, and training programs help you grow - no matter where you start.
• Partially covered Multisport Card or PassSport Card.
• Holiday benefits: Christmas bonus with an extra gift for each child.

While some benefits may vary by location, our goal remains the same: to support your growth, well-being, and success - wherever you are.

• For any additional questions, feel free to contact recruiter Zrinka on LinkedIn.

Diversity drives connection
Infobip is built on diverse backgrounds, perspectives, and talents.
We’re proud to be an equal-opportunity employer and are committed to fostering an inclusive workplace.

No matter your race, gender, age, background, or identity — if you have the passion and skills to thrive, there’s a place for you here.

All qualified applicants will receive consideration for employment without regard to race, color, ancestry, religion, age, sex, sexual orientation, gender, gender identity, national origin, citizenship, disability, veteran status or any other part of one's identity.
Read more about our hiring process.

Please be aware that Infobip processes job applications only through our official platform Workday. Applications submitted via other third-party platforms are not reviewed or processed by Infobip.

Working at Infobip means being part of something truly global. With 75+ offices across six continents, we’re not just building technology — we’re shaping how more than 80% of the world connects and communicates.

As employees, we take pride in contributing to the world’s largest and only full-stack cloud communication platform. But it’s not just what we do, it’s how we do it: with curiosity, passion, and a whole lot of collaboration.

We operate with an AI-first mindset, embedding intelligent tools into our daily workflows to work smarter and more efficiently. Every role here benefits from and contributes to this approach.

If you're looking for meaningful work and challenges that grow you in a culture where people show up with purpose, this is your opportunity.

Let’s build what’s next, together.

Why is this position important at Infobip?
We are looking for engineers who enjoy solving problems, care deeply about quality, and take a data-driven, analytical approach to their work. The role we are hiring for is
Site Reliability Engineer (SRE)
, with a primary focus on driving reliability initiatives and promoting reliability practices across the organization.

For this position, we are specifically seeking an SRE with a strong development background, ideally in backend or full-stack engineering, who is comfortable with scripting and building internal tools.

An SRE in this role understands client use cases, usage patterns, and business impact. They help establish and improve incident management processes, lead post-incident reviews, provide incident metadata and trend analysis, and act as advisors on follow-up actions. Their focus is on promoting a systematic approach to problem-solving and driving long-term solutions.

The team for which we are hiring has a diverse skill set as they come from different backgrounds, from system and software engineering, product management and testing. Over the course of long and varied careers, they have built a broad and valuable skill set that makes them exceptionally strong at handling problems and incidents. Today, they operate as a center of excellence, helping Infobip solve a wide range of complex reliability challenges.

SREs At Infobip Are

• Owners of incident management and its lifecycle
• Aligning incident management processes with the rest of the company
• Streamlining workflows and automating processes
• Driving adoption and monitoring process implementation
• Creating objective, actionable incident reports
• Advisors and experts on reliability topics
• Supporting onboarding and education on reliability practices
• Driving a reliability-focused culture and mindset
• Promoting a blameless incident culture
• Identifying risks and encouraging a systematic approach to problem-solving and long-term improvements
• Partners in defining, developing, monitoring, and maintaining SLOs and SLIs
• Helping teams set meaningful reliability targets for their products
• Providers of a client-centric perspective
• Bringing the client point of view into incident handling and product reliability discussions
• Contributors to faster incident response
• Helping shorten response times across detection, engagement, and resolution through troubleshooting support and continuous improvements
• Builders of internal tooling and automation
• Reducing operational toil and accelerating incident response
• Providers of objective quality insights
• Raising awareness of improvement areas based on historical data
• Delivering actionable insights through quality trends and metrics
• Guiding teams when metrics fall outside expected baselines

What will the main responsibilities be?

• Discovering problems, defining tasks, and solving them with guidance from more senior engineers
• Designing and implementing automation and tooling, such as scripts, services, and dashboards, to improve incident detection and response, reduce manual work, and provide better reliability insights
• Monitoring incidents in a production environment and supporting others during complex incident response situations
• Troubleshooting platform-wide issues by understanding the bigger picture and guiding teams toward resolution of reliability-related problems
• Collaborating with product and development teams to integrate reliability improvements into code and architecture
• Continuously learning about Infobip’s development processes, technologies, system architecture, platform, products, and client segmentation
• Actively participating in incident reviews and learning from incidents
• Communicating problems and solutions at the right level of detail for different audiences involved in incident management
• Sharing problem-solving knowledge within the team and the broader domain

More About You
High school diploma, Bachelor’s degree, or Master’s degree
3+ years in positions like:

• Software Engineer / Backend Engineer / Full Stack Engineer, or
• DevOps / SRE with strong scripting/programming experience

Deep Technical Knowledge In

• Programming or scripting, with solid experience in at least one of the following:

• Java
• Go
• Python
• Bash / PowerShell
• or similar technologies

Familiarity With Most Of The Following

• Monitoring, logging, and alerting tools
• Networking and Linux fundamentals
• System design, architecture, and distributed systems
• Databases and querying languages, both SQL and NoSQL

You are also
proficient in English
and have a good understanding of the development process, risk analysis, and problem-solving. We value a strong client focus, teamwork, curiosity, eagerness to learn, technical competence, execution efficiency, a continuous improvement mindset, and strong analytical and communication skills.

Why you'll love it here

• Financial rewards & recognition - A fair compensation aligned with your experience, industry, and market standards, performance-driven bonuses, regular reviews to support your growth and recognize your contributions, and a culture that values your impact.
• ESOP (Employee Stock Ownership Plan) - As an Infobip employee, you’ll have the opportunity to share in our company’s success through stock options.
• Lunch covered by the company
• Attractive credit terms: Available at predefined financial institutions.
• Flexible work arrangements - combine in-person collaboration with remote work and flexible working hours - start between 7 AM and 10 AM
• Work-life balance and Well-being  - We offer time off when you need it, special leave days for life’s big moments, and a flexible hybrid work model tailored to local regulations.
• Career mobility - Your career is a journey. With internal mobility, upskilling, and mentorship, we help you shape your path.
• Professional development - Learning never stops. Onboarding, mentorship, and training programs help you grow - no matter where you start.
• Partially covered Multisport Card or PassSport Card.
• Holiday benefits: Christmas bonus with an extra gift for each child.

While some benefits may vary by location, our goal remains the same: to support your growth, well-being, and success - wherever you are.

• For any additional questions, feel free to contact recruiter Zrinka on LinkedIn.

Diversity drives connection
Infobip is built on diverse backgrounds, perspectives, and talents.
We’re proud to be an equal-opportunity employer and are committed to fostering an inclusive workplace.

No matter your race, gender, age, background, or identity — if you have the passion and skills to thrive, there’s a place for you here.

All qualified applicants will receive consideration for employment without regard to race, color, ancestry, religion, age, sex, sexual orientation, gender, gender identity, national origin, citizenship, disability, veteran status or any other part of one's identity.
Read more about our hiring process.

Please be aware that Infobip processes job applications only through our official platform Workday. Applications submitted via other third-party platforms are not reviewed or processed by Infobip.

Working at Infobip means being part of something truly global. With 75+ offices across six continents, we’re not just building technology — we’re shaping how more than 80% of the world connects and communicates.

As employees, we take pride in contributing to the world’s largest and only full-stack cloud communication platform. But it’s not just what we do, it’s how we do it: with curiosity, passion, and a whole lot of collaboration.

We operate with an AI-first mindset, embedding intelligent tools into our daily workflows to work smarter and more efficiently. Every role here benefits from and contributes to this approach.

If you're looking for meaningful work and challenges that grow you in a culture where people show up with purpose, this is your opportunity.

Let’s build what’s next, together.

Why is this position important at Infobip?
We are looking for engineers who enjoy solving problems, care deeply about quality, and take a data-driven, analytical approach to their work. The role we are hiring for is
Site Reliability Engineer (SRE)
, with a primary focus on driving reliability initiatives and promoting reliability practices across the organization.

For this position, we are specifically seeking an SRE with a strong development background, ideally in backend or full-stack engineering, who is comfortable with scripting and building internal tools.

An SRE in this role understands client use cases, usage patterns, and business impact. They help establish and improve incident management processes, lead post-incident reviews, provide incident metadata and trend analysis, and act as advisors on follow-up actions. Their focus is on promoting a systematic approach to problem-solving and driving long-term solutions.

The team for which we are hiring has a diverse skill set as they come from different backgrounds, from system and software engineering, product management and testing. Over the course of long and varied careers, they have built a broad and valuable skill set that makes them exceptionally strong at handling problems and incidents. Today, they operate as a center of excellence, helping Infobip solve a wide range of complex reliability challenges.

SREs At Infobip Are

• Owners of incident management and its lifecycle
• Aligning incident management processes with the rest of the company
• Streamlining workflows and automating processes
• Driving adoption and monitoring process implementation
• Creating objective, actionable incident reports
• Advisors and experts on reliability topics
• Supporting onboarding and education on reliability practices
• Driving a reliability-focused culture and mindset
• Promoting a blameless incident culture
• Identifying risks and encouraging a systematic approach to problem-solving and long-term improvements
• Partners in defining, developing, monitoring, and maintaining SLOs and SLIs
• Helping teams set meaningful reliability targets for their products
• Providers of a client-centric perspective
• Bringing the client point of view into incident handling and product reliability discussions
• Contributors to faster incident response
• Helping shorten response times across detection, engagement, and resolution through troubleshooting support and continuous improvements
• Builders of internal tooling and automation
• Reducing operational toil and accelerating incident response
• Providers of objective quality insights
• Raising awareness of improvement areas based on historical data
• Delivering actionable insights through quality trends and metrics
• Guiding teams when metrics fall outside expected baselines

What will the main responsibilities be?

• Discovering problems, defining tasks, and solving them with guidance from more senior engineers
• Designing and implementing automation and tooling, such as scripts, services, and dashboards, to improve incident detection and response, reduce manual work, and provide better reliability insights
• Monitoring incidents in a production environment and supporting others during complex incident response situations
• Troubleshooting platform-wide issues by understanding the bigger picture and guiding teams toward resolution of reliability-related problems
• Collaborating with product and development teams to integrate reliability improvements into code and architecture
• Continuously learning about Infobip’s development processes, technologies, system architecture, platform, products, and client segmentation
• Actively participating in incident reviews and learning from incidents
• Communicating problems and solutions at the right level of detail for different audiences involved in incident management
• Sharing problem-solving knowledge within the team and the broader domain

More About You
High school diploma, Bachelor’s degree, or Master’s degree
3+ years in positions like:

• Software Engineer / Backend Engineer / Full Stack Engineer, or
• DevOps / SRE with strong scripting/programming experience

Deep Technical Knowledge In

• Programming or scripting, with solid experience in at least one of the following:

• Java
• Go
• Python
• Bash / PowerShell
• or similar technologies

Familiarity With Most Of The Following

• Monitoring, logging, and alerting tools
• Networking and Linux fundamentals
• System design, architecture, and distributed systems
• Databases and querying languages, both SQL and NoSQL

You are also
proficient in English
and have a good understanding of the development process, risk analysis, and problem-solving. We value a strong client focus, teamwork, curiosity, eagerness to learn, technical competence, execution efficiency, a continuous improvement mindset, and strong analytical and communication skills.

Why you'll love it here

• Financial rewards & recognition - A fair compensation aligned with your experience, industry, and market standards, performance-driven bonuses, regular reviews to support your growth and recognize your contributions, and a culture that values your impact.
• ESOP (Employee Stock Ownership Plan) - As an Infobip employee, you’ll have the opportunity to share in our company’s success through stock options.
• Lunch covered by the company
• Attractive credit terms: Available at predefined financial institutions.
• Flexible work arrangements - combine in-person collaboration with remote work and flexible working hours - start between 7 AM and 10 AM
• Work-life balance and Well-being  - We offer time off when you need it, special leave days for life’s big moments, and a flexible hybrid work model tailored to local regulations.
• Career mobility - Your career is a journey. With internal mobility, upskilling, and mentorship, we help you shape your path.
• Professional development - Learning never stops. Onboarding, mentorship, and training programs help you grow - no matter where you start.
• Partially covered Multisport Card or PassSport Card.
• Holiday benefits: Christmas bonus with an extra gift for each child.

While some benefits may vary by location, our goal remains the same: to support your growth, well-being, and success - wherever you are.

• For any additional questions, feel free to contact recruiter Zrinka on LinkedIn.

Diversity drives connection
Infobip is built on diverse backgrounds, perspectives, and talents.
We’re proud to be an equal-opportunity employer and are committed to fostering an inclusive workplace.

No matter your race, gender, age, background, or identity — if you have the passion and skills to thrive, there’s a place for you here.

All qualified applicants will receive consideration for employment without regard to race, color, ancestry, religion, age, sex, sexual orientation, gender, gender identity, national origin, citizenship, disability, veteran status or any other part of one's identity.
Read more about our hiring process.

Please be aware that Infobip processes job applications only through our official platform Workday. Applications submitted via other third-party platforms are not reviewed or processed by Infobip.