Full-Time

Senior Software Engineer

Spain

Posted on 7/19/2025

Telgorithm

Telgorithm

11-50 employees

High-deliverability A2P SMS/MMS messaging API

No salary listed

Remote in Spain

Remote

Remote role open to Europe and nearby time zones; preference for EU (excluding Germany), Serbia, and Poland. Proof of identity/work authorization required to work as a contractor in country of residence.

Category
Software Engineering (3)
, ,
Required Skills
RabbitMQ
SQL
Postgres
C#
Requirements
  • You have a Bachelor’s degree or higher in a technical field
  • You have hands-on experience in web services development with ASP.NET Core, Entity Framework Core, SQL databases (Microsoft SQL, Postgres), message brokers (RabbitMQ)
  • You are able to write and understand common algorithms (e.g., sorting), evaluate their running time and memory consumption, and understand built-in methods like in Dictionary<K,V>
  • You have a deep understanding of asynchronous and parallel programming concepts
  • You have a deep understanding of distributed and event-driven systems, including the concepts, peculiarities, and best practices behind architecting such systems
  • You are able to model complex domain rules and processes by writing maintainable, testable, robust, and performance code
  • You'll stand out if you have hands-on experience with Domain Driven Design patterns and practices
Responsibilities
  • Design, develop, and maintain scalable backend systems that power applications, ensuring robustness, performance, and security
  • Work in a startup environment without strict enterprise processes, taking initiative and being motivated to deliver results
  • Participate in code reviews and discuss architecture and implementation details with peers
  • Collaborate with issue reporters or stakeholders to clarify requirements
  • Work closely with QA to support the testing process, including fixing bugs and answering questions
  • Resolve production issues by analyzing logs, metrics, traces, and alerts
  • Model complex domain rules and processes by writing maintainable, testable, robust, and performant code
  • Ensure observability by implementing logs, defining metrics, and setting alert criteria for the features being developed
  • Decompose tasks and plan work to ensure timely delivery with minimal risks, adhering to the Definition of Done
  • Collaborate with the Customer Success team to resolve customer issues effectively
  • Analyze and enhance system performance by identifying bottlenecks, optimizing processes, and implementing gradual architectural changes
  • Solve complex technical challenges by analyzing issues, learning new technologies, and continuously enhancing existing systems
  • Help build a product that solves must-have needs, driving up new logo sales and successfully securing renewals based on value delivered to end-users
  • Position yourself to continue to evolve with the company, we’re a small startup that experiences rapid and frequent change
Desired Qualifications
  • None

Telgorithm provides a messaging API platform for business-to-person (A2P) SMS and MMS. Its Always On Messaging API Platform guarantees 99% deliverability and supports 10DLC, with automated compliance management. Developers integrate Telgorithm’s APIs into their software to send messages at scale, with usage- or subscription-based pricing and features like automated rate-limit optimization to reduce costs. Customers include software providers, marketing agencies, and any business sending large volumes of text messages. The goal is to help businesses communicate reliably with customers, achieve high deliverability, and manage compliance efficiently.

Company Size

11-50

Company Stage

Seed

Total Funding

$7.1M

Headquarters

Los Angeles, California

Founded

2021

Simplify Jobs

Simplify's Take

What believers are saying

  • $3.8M seed funding from Bonfire Ventures expands compliance platform in 2023.
  • G2 reviews praise reliable SMS delivery, freeing SaaS focus on customers.
  • Developer-friendly APIs enable quick integration within one week.

What critics are saying

  • Twilio locks in SaaS providers, eroding Telgorithm's market share now.
  • Sinch's Inteliquent acquisition raises Telgorithm's 10DLC costs immediately.
  • Burn rate exhausts runway by mid-2027 without Series A funding.

What makes Telgorithm unique

  • Telgorithm automates full A2P 10DLC compliance and registration process.
  • Smart queueing technology guarantees 99% message deliverability rates.
  • Time Routing feature optimizes queued A2P message management for enterprises.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Unlimited Paid Time Off

Flexible Work Hours

Remote Work Options

Paid Vacation

Paid Sick Leave

Stock Options

Growth & Insights and Company News

Headcount

6 month growth

5%

1 year growth

-4%

2 year growth

5%
Telgorithm
Aug 18th, 2023
The #1 SMS API Twilio Alternative

If you're searching for the best messaging API for your business SMS/MMS, Telgorithm is the #1 Twilio SMS alternative.

LA TechWatch
Jun 5th, 2023
LA Tech Week in Review: 5/28/22-6/5/23 – LA TechWatch

Gardens, a multiplayer-focused gaming studio, has raised $12.25M in funding according to a recent SEC filing.

VoIP Review
Apr 14th, 2023
A quick roundup of the news in Telecoms | Week #15 | VoIP Review

Telgorithm, an A2P text messaging API provider, has introduced Time Routing, a novel product feature that enables enterprises to better manage queued A2P messages.

FinSMEs
Feb 22nd, 2022
Telgorithm Raises $3.8M In Seed Funding

Telgorithm, a Los Angeles, CA-based cloud communications technology startup, raised $3.8M in Seed funding. The round was led by Bonfire Ventures with participation from Daher Capital, Amplify.LA, and I2BF. The company intends to use the funds to further develop and enhance its compliance-based messaging platform for SaaS providers. Led by CEO Aaron Alter, COO Mason Zheng, [] The post Telgorithm Raises $3.8M in Seed Funding appeared first on FinSMEs.

LA TechWatch
Feb 15th, 2022
I2BF Global Ventures invests into Telgorithm in $3M

Telgorithm, the compliance-based messaging platform, has raised $3M in Seed funding from investors that include Amplify.LA, I2BF Global Ventures, Bonfire Ventures, and Daher Capital.

INACTIVE