
Senior Software Engineer (L4 - Tech Lead)
Because you belong at Twilio.
The Who, What, Why and Where
Twilio is growing rapidly and seeking a Staff Software Engineer to lead the design and implementation phases of cloud-based distributed systems built to seamlessly scale to several million transactions per day.
Who?
As a Staff, Software Engineer (L4 - Tech Lead) in the Account Security team, you will lead the design and implementation phases of cloud-based distributed systems built to seamlessly scale to several million transactions per day. Not only will you be responsible for tackling some of the most complex and exciting technical problems in the industry, you will also be sharing your technical expertise with other engineers and leading them through an accelerated learning process.
You are intrigued by the intersection of the cloud, telecommunications and security spaces, how to harness the power of SMS and voice to enable millions of consumers to securely sign up and sign in every day using the services from the global brands they trust. You enjoy the challenge of owning a mission critical service and engineering it to work reliably in any circumstance.
You are also passionate about collaborating with multiple R&D and product teams, crafting together microservices and APIs that developers around the world will demonstrate to deliver new applications. You have strong communication skills, and a belief that team output is more important than individual output.
Minimum Qualifications
- 7+ years of experience with at least two programming languages such as Java, Scala, Python, Ruby, JavaScript or Go.
- 5+ years of experience working with modern agile product development teams of engineers, product managers and designers.
- 5+ years of Experience with SQL/NoSQL technology such as PostgreSQL, MySQL, DynamoDB understanding common use cases and performance pitfalls
- 2+ years of Experience dealing with event-driven architectures and message brokers such as RabbitMQ, KAFKA, ActiveMQ, etc and an in depth understanding of their use cases and pitfalls
- Versed in concepts such as DDD, SOLID, Cloud Native Patterns, distributed systems and architecture. Capable of understanding pitfalls and anticipating common failure modes of a microservice environment.
- Experienced in implementing prototypes and in practices and concepts such as MVP, A/B testing and feature toggles for rolling-out features to production.
- Strong communication skills: able to communicate effectively with technical and non technical partners
- Bachelor’s degree in computer science or equivalent professional experience.
- Passion for new technologies and proven capability in analysis and problem-solving.
- Strong troubleshooting and monitoring skills with practical experience in modern tools such as Kibana, Datadog, PagerDuty or related.
Preferred Qualification
- Experience with https://stackshare.io/twilio/verify-telephony">our stack
- Track record as a full-stack engineer
- Experience with AWS related technologies
- Background in telecommunications domain
- Background in security domain
What?
- BE AN OWNER: Take full end-to-end ownership of your services, from designing to operations and monitoring in production.
- EMPOWER OTHERS: Provide a safe work environment that embraces failure as a way of learning and inspires our engineers to be inventive and motivated.
- NO SHENANIGANS: You always act in an honest, direct and transparent way and uphold our values.
- WEAR THE CUSTOMER’S SHOES: Besides technical excellence, always keep in mind what is the business problem we are trying to solve for our customers and how our decisions impact them.
- WRITE IT DOWN: Evaluate opportunities, risk and technical strategies and provide key findings to internal partners.
- RUTHLESSLY PRIORITIZE: Work in a fast paced environment. It is key for you to understand, document and define risks that drive and enhance the organization's ability to prioritize while advising the business of these priorities.
- BE BOLD: Drive architecture and building systems for multiple orders of magnitude of growth. Every big idea starts small: open up the boundaries and keep raising the bar as solving small problems can bring big results. Never settle and keep pushing yourself and the teams forward.
- BE INCLUSIVE: Coach, mentor and inspire engineering teams by building and ensuring a safe and inclusive environment where all voices can be heard.
- DRAW THE OWL: Influence teams to continuously be improving while supporting progressive ways to solve problems; adopt new technologies and strategies where applicable.
- DON’T SETTLE: Always look for the next opportunity for Twilio to improve our quality, reliability and security to continuously earn our customers trust.
Why?
Our developers build the leading Twilio Verify service used by millions of customers around the world. Every day we push the boundaries of web-scale service delivery, operating with utmost reliability the API services that secure the online presence of the biggest brands. We are passionate about crafting simple APIs that developers will love.
By joining us you will have the opportunity to work on the next generation of Twilio multi factor authentication and identity verification services with a team of forward-thinking and supportive professionals who will care about helping you on a successful career path. Twilio is truly unique; we are a company committed to your growth, your learning, your development, and your entire employee experience. We only win when our employees succeed, and we're dedicated to helping you develop your strengths. We have a cultural foundation built on diversity, inclusion, and innovation, and we want you and your ideas to thrive at Twilio.
Where?
This position will be located in our office in Bangalore, India. You will enjoy our office perks: catered meals, snacks, game room, ergonomic desks, massages, bi-weekly All Hands and more. What you will also get to experience is a company that believes in small teams for maximum impact; seeks well-rounded talent to ensure a full perspective on our customers’ experience, understands that this is a marathon, not a sprint; that continuously and purposefully builds an inclusive culture where everyone is able to do and be the best version of themselves.
About Us
Millions of developers around the world have used Twilio to unlock the magic of communications to improve any human experience. Twilio has democratized communications channels like voice, text, chat, video and email by virtualizing the world’s communications infrastructure through APIs that are simple enough for any developer to use, yet robust enough to power the world’s most demanding applications. By making communications a part of every software developer’s toolkit, Twilio is enabling innovators across every industry — from emerging leaders to the world’s largest organizations — to reinvent how companies engage with their customers.
Invest in weeks dedicated to tackling hard problems and creating your own ideas. We have a cultural foundation built on diversity, inclusion, and innovation, and we want you and your ideas to thrive at Twilio

Similar jobs
Job Title: Mid-Level Backend Engineer
Location: Remote
Type: Full-time or Project Basis
About Us:
At Tese, we are committed to advancing sustainability through innovative technology. Our platform helps SMEs and financial institutions manage their Environmental, Social, and Governance (ESG) goals using AI, IoT, and data-driven insights. We are looking for a skilled Backend Engineer with mid-level experience to join our dynamic team and contribute to building scalable, robust backend systems.
Role Overview:
As a Mid-Level Backend Engineer, you will be responsible for developing and maintaining backend services that power our core platform. You will work closely with our frontend developers, product team, and data scientists to implement solutions that are scalable, secure, and efficient. You will focus on building APIs, managing databases, and optimizing the performance of our services.
Key Responsibilities:
- API Development:
- Design, develop, and maintain RESTful APIs that serve our frontend applications and third-party integrations.
- Ensure high-performance and responsiveness of APIs, while following best practices for security and scalability.
- Database Management:
- Work with both NoSQL (MongoDB) , SQL (PostgreSQL, MySQL) and databases, ensuring efficient data storage and retrieval.
- Optimize database queries and manage migrations, ensuring data integrity and consistency across the platform.
- Microservices and Cloud Infrastructure:
- Develop microservices architecture using Docker and Kubernetes, ensuring that services are scalable and maintainable (Good to have).
- Work with cloud platforms (AWS, GCP, Azure) to deploy and manage backend services, ensuring high availability and fault tolerance.
- Collaboration and Documentation:
- Collaborate with frontend developers, data scientists, and product managers to gather requirements and develop backend solutions.
- Write clear, maintainable code with proper documentation, including technical designs, API specifications, and test cases.
- Performance and Security:
- Monitor backend services to ensure optimal performance, identifying bottlenecks and implementing improvements.
- Implement security best practices for APIs, databases, and backend systems, including authentication, authorization, and data encryption.
Qualifications:
- Education: Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
- Experience: 3-5 years of experience in backend development, with a strong focus on building scalable and efficient systems.
- Technical Skills:
- Proficiency in backend programming languages such as Node.js, Python.
- Strong understanding of RESTful APIs.
- Hands-on experience with SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) databases.
- Familiarity with cloud platforms such as AWS, Google Cloud.
- Knowledge of CI/CD pipelines and version control (e.g., Git).
- Soft Skills:
- Strong problem-solving abilities and the capacity to work independently as well as in a collaborative environment.
- Excellent communication skills, with the ability to explain complex technical concepts to both technical and non-technical stakeholders.
- A strong passion for sustainability and a desire to contribute to impactful projects that drive positive environmental change.
Preferred Qualifications:
The following qualifications are bonus, but not strictly necessary:
- Experience with Docker and Kubernetes for containerisation and orchestration (Good to have).
- Experience working with microservices architecture.
- Knowledge of ESG (Environmental, Social, and Governance) metrics and sustainability (Good to have).
- Familiarity with serverless architectures and API gateways.
Benefits:
- Competitive salary and benefits package and performance bonuses.
- Flexible working hours and remote work options.
- Opportunity to work on cutting-edge technology with a focus on sustainability.
- Professional development opportunities, including access to conferences and training.
How to Apply:
Interested candidates should submit their CV and a cover letter detailing their experience and passion for backend development and sustainability here.
Join Us:
Be a part of a forward-thinking team that is making a real difference in the world. At Tese, you'll have the opportunity to innovate, grow, and contribute to a more sustainable future through technology.


• 3+ Years of experience as a Go Developer
• Experience in ReactJS (most preferred) or AngularJS similar front end frameworks
• Experience with the Python or/and Golang (preferably both), SQL, and design/architectural
patterns
• Experience in Java or dotnet or other opensource technologies is an added advantage
• Hands-on experience on SQL, Query optimization, DB server migration
• Preferably experience in Postgre SQL or MySQL
• Knowledge of NOSQL databases will be an added advantage
• Experience in Cloud platforms like AWS, Azure with knowledge of containerization, Kubernetes is an
added advantage
• Knowledge of one or more programming languages along with HTML5/CSS3,Bootstrap
• Familiarity with architecture styles/APIs (REST, RPC)
• Understanding of Agile methodologies
• Experience with Threading, Multithreading and pipelines
• Experience in creating RESTful API’s With Golang or Python or Java in JSON, XMLs
• Experience with GitHub, Tortoise SVN Version Control
• Strong attention to detail
• Strong knowledge of asynchronous programming with the latest frameworks
• Excellent troubleshooting and communication skills
• Strong knowledge of unit testing frameworks
• Proven knowledge of ORM techniques
• Skill for writing reusable libraries Understanding of fundamental design principles for building a scalable
applicatio


1: proficient in python, flask, pandas, GitHub and AWS
2: good knowledge of databases both SQL and NoSQL
3:Strong experience in REST and SOAP APIs
4: Experience with working on scalable interactive web applications
5:Basic knowledge of JavaScript and Html
6: Automation and crawling tools and modules
7: Multithreading and Multiprocessing
8:Good Understanding of test-driven Development
9: Preferred exposure to finance domain



Responsibilities:
Develop new back-end features in one Python/Java/Go
Collaborate with key stakeholders across different stages of the SDLC
Deliver high quality code and lead validation of the developed features
Skills and Qualifications:
5+ years of working experience in backend software development
Bachelor’s degree in Computer Science
Solid foundation in data structures, algorithms and software design
Strong analytical and debugging skills
Proficiency in one of Python/Java/Go
Hands on experience on big-data technologies such as Apache Spark, Kafka, Cassandra etc
Familiarity with agile practices
About Araali:
Araali Networks is a SaaS based cybersecurity startup that has raised a total of $10M from well known investors like A Capital, Firebolt Ventures and SV Angels, and and through a strategic investment by a publicly traded security company.
The company is disrupting the cloud firewall market by auto-creating nano-perimeters around every cloud app. The Araali solution enables developers to focus on features and improves the security posture through simplification and automation.
The security controls are embedded at the time of DevOps. The precision of Araali controls also helps with security operations where alerts are precise and intelligently routed to the right app team, making it actionable in real-time.
Work on the development backend systems for our first product
Build reliable, secure and performant backend systems
Drive test coverage and continuous delivery automation within the team
Requirements
3-5 years of software development experience
Strong computer science fundamentals
Good knowledge of Java ecosystem
Can write code that is readable, maintainable and performant
Good understanding of relational databases, transactions, entity-relationship modeling
Comfortable writing multi-threaded programs
Desired Skills and Experience
Java,J2EE,Spring,Struts


About NetElixir:
NetElixir is a global digital marketing firm headquartered in Princeton, NJ. With a common goal of helping our customers and challenging ourselves to think differently, we face challenges and tackle them together as a team. We are a close-knit group of imaginative and friendly industry experts who bring our unique passions and personalities together to find creative solutions that drive results.
With offices in the US and India, NetElixir works persistently gathering, evaluating, computing, and formulating raw data and turning it into actionable insights for our customers. We work consistently to develop new technology that will improve and facilitate digital marketing efforts across the globe.
Role: Python Developer
Experience: 3 -5 Years
Company Website: http://www.netelixir.com/">www.netelixir.com
Job Description:
Your responsibilities will include understanding the needs, gathering and prioritizing requirements, and working with our software development teams to design, develop and deliver new features.
- 3-5 years of experience in building web applications and product development using Python
● Experience in Python Backend development, microservice API development using Flask and/or Django
● Experience in SQL and No SQL databases
● Experience in AWS cloud services
● Working knowledge in Unit testing with pytest, Git (versioning, branching, etc..), CI-CD
● Collaboration with technical teams and product stakeholders to ensure design and
implementation is aligned with business requirements
● Perform design and code reviews to ensure products meet our quality standards
● Assist in the education and development of junior team members to ensure progression and
improvement.
● Good hands-on experience in debugging application issues
● Work experience in developing and deploying AI/ML models (additional advantage)
● Exposure to Digital Marketing Domain (additional advantage)



Intro
We are looking for an experienced Senior Software Engineer to join our team and drive the technology growth of our pay later platform. At Rely, we want passionate and talented individuals that want a challenge building the next generation payment products for Millennials across Asia. Together we will build the best products using amazing technology.
What will you do
- Design and implement business critical, high performance large scale services.
- Translate business requirements into scalable and extensible design.
- Coordinate with cross functional teams (Data, UX, QA etc.) on planning and execution.
- Continuously improve code quality, product execution and customer delight.
- Proactively manage stakeholder communication related to deliverables, risks, changes and dependencies.
- Building and managing automated build/test/deployment environments.
- Lead team members on functional and nonfunctional requirements and spread goals across the team.
What will you need
- 3+ years of hands-on experience with python and a backend framework (ideally django)
- 1+ years Hands-on experience working with Javascript and JS frameworks (Angular, React)
- Hands-on experience in designing, developing, testing and deploying applications large scale applications in any language or stack
- Experience working with high scale distributed systems.
- Practical knowledge of scalable software design.
- Good working knowledge of AWS
- Proficient with APIs, web protocols, OAuth, git.
- Ability to understand and implement Continuous Integration and Continuous Delivery.
- Well versed with Lean methodologies, TDD and Test Engineering and Automation.
- Ability to design and implement low latency RESTful services.
- Willingness to learn new languages and methodologies.
What would be a bonus
- Experience in production environments with large data sets
- Experience in scaling systems to millions of users.
- Work experience in a fast-growth startup
- Experience in DevOps tools but not limited to Docker, Kubernetes
- Experience in Gunicorn and Nginx



