Senior Software Engineer, Sinch
Cloud communications for businesses
Be an early applicant
Cloud communications for businesses
1001+ employees
Be an early applicant
1001+ employees
Company mission
To bring businesses and people closer through personalised engagement.
Role
Who you are
- Five to eight plus years of professional software engineering experience Strong backend and platform skills including distributed systems microservices event driven architectures and cloud native design Ability to explain architectural trade offs clearly
- Strong engineering fundamentals including clean code testing strategies debugging production systems and building reliable long lasting systems
- Experience with Java Spring AI TypeScript or React Deep expertise in at least two core backend technologies and willingness to learn others quickly
- Experience using AI coding tools such as Copilot Claude Code Cursor or similar Understanding benefits risks and best practices
- Ability to work autonomously define scope and deliver solutions independently Strong decision making on prioritization
- Experience with cloud and operations including AWS Docker Kubernetes CI CD GitOps infrastructure as code and monitoring
- Strong communication skills with both technical and non technical stakeholders Fluent English required
Desirable
- Experience with Temporal and Kafka Experience with conversational AI LLMs or agent based systems Experience building platforms from scratch Background in CPaaS or communication platforms
What the job involves
- We are building the next generation of conversational AI infrastructure As a Senior Software Engineer on the Agentic Orchestration Platform team you will design build and own core components that coordinate AI agents workflow execution and multichannel communication via SMS WhatsApp and voice at scale
- This is a zero to one opportunity to build a new platform from the ground up You will work on complex problems with high autonomy as part of a small senior team with significant impact You will collaborate with Engineering Manager Tech Lead Product Manager Domain Architect and cross functional teams
- Design and build core platform components with high ownership and autonomy Drive system design and create technical proposals Work on distributed event driven systems combining deterministic workflows and AI agent behavior
- Write production grade software including clean maintainable code with tests and documentation Build systems that are observable debuggable and resilient Own full lifecycle including design deployment monitoring and on call responsibilities Follow build ship run approach
- Develop platform components integrating LLMs and AI agents Work with prompt management context handling function calling guardrails and error recovery Address challenges like testing non deterministic systems fallback strategies latency and cost optimization
- Contribute to engineering excellence through architecture discussions code reviews and standards definition Mentor team members and share knowledge
- Collaborate across teams with product and technical stakeholders Provide technical guidance and trade offs and align solutions with business needs
Our take
Over the course of well over a decade, Sinch has grown into an international service helping enterprise companies communicate with their customers over text, in-app video/voice messages, and other mobile channels. Used by Google, Tinder, Uber, and PayPal, among other marquee enterprise companies, most customers will have crossed paths with Sinch.
The company’s rise is due in part to an increased marketing focus on cultivating a highly personalised relationship between customer and brand. In part, too, it’s down to the surge in custom Sinch saw over recent years when more familiar channels of customer/brand communication went down. That seems to have settled now, but personalized messages, over text specifically, continues to play well among younger consumers.
It's going to prove a tough market to navigate going forward, though. Equally well-established competitors like Twilio, 8x8, and Link Mobility Group all have similar offerings. Sinch's foray into conversational AI will help them keep pace, as will their steady march of acquisitions, fundraising to fuel scaling efforts and partnerships with the likes of Salesforce.
Freddie
Company Specialist at Welcome to the Jungle
Insights
2% employee growth in 12 months
Company
Funding (2 rounds)
Mar 2017
$15.2m
LATE VC
Apr 2016
$1.1m
SEED
Total funding: $16.3m
Company HQ
Stadshagen, Stockholm, Stockholm County
Leadership
Laurinda Pang
(CEO)Previously President of Global Customer Success and International / Wholesale Markets at Lumen Technologies. Was also Chair of the ITW | Global Leaders' Forum and Independent Director at Acacia Communications.
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