What you will be doing Most of your day will be dedicated to software design, research, and coding. On typical projects, you will have a lot of freedom and you will be paired with another team member. Our team is made up of very experienced engineers, some with more than 10 years of experience. By working together you will learn from each other along the way. You will have an enormous impact on making our API service faster, more scalable and more flexible.
You will add new features to the service and find ways to make the existing ones perform orders of magnitude faster. Our customers have millions of users; they use Stream for mission critical features such as showing content and exposing core functionality of their application. Building stable and reliable software is not just an option: as a member of the development team, you will design and write state-of-the-art software, follow best practices, measure everything and be responsible for deployment to production. You will also spend part of your time talking to our customers and help them to use Stream in their app.
The challenges Distributed databases: we built our own data store for feeds and for chat Real-time messaging High performance: our API responses are in the 10ms range High scalability: we use sharding, master-master, and master-slave to ensure scalability High availability: our entire infrastructure is designed and operated to survive entire datacenter crashes Multi-region: we deploy our service on 4 different continents
You have * Proficiency in Go or you are a Senior backend developer willing and able to learn quickly * 5+ years as a backend developer * Experience with high traffic and high performance applications * Good knowledge of relational databases * Experience with building HTTP APIs * Experience managing your own projects and work in a team
Our tech stack At Stream we use a wide collection of technologies to offer highly optimized and available features to our customers. Over the years we have experimented with different programming languages, frameworks, databases, and libraries. Here is a short list of the technology that we currently use. Do not worry if you do not master them all or if you do not see your favorite tool or language, you will have the chance to be exposed to most and to convince us to expand the list:
What we have to offer you Stream employees enjoy some of the best benefits in the industry:
Our culture Stream has a casual social culture, our team is diverse and we all have different backgrounds.
Our talented developers are highly technical and collaborative, which makes Stream a great place to learn and improve your skills. When it comes to software engineering our culture is oriented towards ownership and quality: our goal is to deliver stable software.
If you are interested in becoming a part of what we do, apply now!
No recruiters/agencies please
As our Senior Go Developer, you will make key contributions to the creation of a product on track to improve medical care for millions of people. You will be a valuable member of our Backend chapter with the chance to maintain an ever-expanding cloud-based product, the freedom to work on a wide range of topics, and the opportunity to make architectural (design) decisions.
AMBOSS is a medical education company that has fundamentally changed the way physicians acquire their know-how. Our comprehensive study and reference tool combines cutting-edge technology with the latest medical research.
Founded in 2012 by doctors for doctors, the company’s international team consists of more than 40 different nationalities, with the most diverse backgrounds. AMBOSS is headquartered in Berlin with offices in Cologne and New York, currently serving over 500,000 users in more than 180 countries.
We believe that it is not possible to put every type of diversity into words. We always have and always will live with the intention that every person, from every background and demographic, is welcome. Whoever you are, and wherever you come from, we believe you have something to add to our mission.
Does this sound like the place you have been looking for? Get in touch! We are looking forward to receiving your application.
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About the role
Kalido exists to help create a world where people and organizations can maximize potential through a global community of valued connections and opportunities. We passionately problem solve new ways to do this, no matter how difficult the challenge. Everyone on our team is a true product owner, responsible for ensuring excellence. We move fast (but thoughtfully), and are looking for a talented and impact-oriented Backend Developer to join us. In this role, you will be responsible for: shaping architectural decisions and technology choices; building the infrastructure at the very heart of Kalido; and ensuring that it is secure, performant, easily deployable, scalable, cost-effective, and fit for purpose. In doing so, you will shape the company, and our collective ability to impact the world. As part of a startup, your responsibilities will vary, but on a day to day basis, you will:
Build Kalido’s back end
What we are looking for
We value inclusion, impact, transparency, generosity, and teamwork. You can read more about our values and what they mean to us here: https://www.kalido.me/our-mission/. We are looking for someone who: shares our philosophy; is capable and excited about the role; strives for personal and professional excellence; and wants to make a meaningful difference through their work.
This opportunity is for you if you are:
What we offer
Working at Kalido means working with a solid startup that has been around since 2015. We balance our drive for delivery with flexible working arrangements, generous maternity and paternity leave, weekly team lunches, and the chance to truly shape the culture you work in. You will never run out of fascinating problems to solve and will have incredible opportunities to work with a diverse team that cares about your growth.
About Kalido
By helping everyone to easily create stronger communities and more meaningful real-world connections, Kalido’s goal is to level the playing field of opportunity. We are redefining the way people connect in their neighbourhoods, inside companies, at events, in schools, in alumni groups, in co-working spaces, and doing so throughout their lives. In August 2019 we closed a 5m USD Series A, and are backed by HCL, a global IT player with a 22 bn USD market cap, and co-founded by the #3 core team member and early investor at Alibaba. If you’re excited about empowering individuals, helping organisations to work better together, and creating a platform to power the future of work, this is the place to do it. To learn more, visit https://www.kalido.me.
How to apply
If being a Lead Software Developer at Kalido sounds like something that leverages your skills and ignites your passion, we want to get to know you. Drop us an email with your CV (including a link to your portfolio and relevant repositories) and a cover letter, addressed to Martyna at careers@kalido.me.
In order to be a great workplace and build a great product, we believe we must strive to truly represent and support this diverse world. We welcome applications from all suitably qualified people regardless of age, race, gender identity, sexual orientation, parental status, marital status, disability, religion, or belief.
Help us kickstart a new era of mind-blowing business graphics accessible to everyone!
Vizzlo creates individual business graphics. Whether for presentations, business documents, or the Web – with Vizzlo anybody can visualize their ideas in seconds.
We are looking for an experienced Go backend developer to join our team in Leipzig or remote. We are a growing team of enthusiasts in a VC-backed startup. We’re proud of our hands-on culture, we talk plainly to each other, and improve anything we’re working on until it’s perfect.
As a Go backend engineer, you’ll work on our API servers and internal libraries that make the Vizzlo products come to live. Your code will talk to AWS storage infrastructure, to JavaScript frontends, and best of all, to lots of different third-party APIs of other products Vizzlo integrates with. You are passionate about idiomatic Go code but are not afraid to tackle obstacles from all kinds of points of view when necessary. You love to write reliable, scalable, and tested code.
A bit about us Advanced Blockchain AG designs, develops and deploys Distributed Ledger Technology (DLT) software solutions for companies and their services and operations. Our team is specifically set up to ride the wave of the blockchain revolution, possessing the experience, personnel and technological know-how to create a wide range of tailor-made blockchain systems to meet all kinds of needs. We’re experts in the field of Distributed Ledger Technology, we understand the ability the technology has to disrupt long-standing industries and create entirely new business models, and we’re set on channeling our knowledge and expertise into connecting the real-world with the power and potential DLT has to shape our collective future.
The Role We're opening " Junior Go Developer " vacancy for an engineering role in our R&D team. You will be responsible for the Backend development of new and ongoing projects and actively participate in connecting the real world with the power and potential of Distributed Ledger Technology.
Responsibilities ● Development of our high-loaded Web applications Back-end ● Working with our Block-chain API ● Rest API development ● Micro services development with Docker containerization ● Working and maintaining different types of DB ● Develop Unit tests when needed ● Effectively communicate and document the developed software ● Work closely with team in an agile environment to ensure a high-quality product.
Required Skills ● Bachelor’s degree in engineering, math, physics or computer science or equivalent ● 1,5 year or more of experience in Back-end development ● Practical experience with MongoDB, MySQL ● Good knowledge Go and experience with any other language Ruby, Elixir, Rust, C++, Erlang, Python ● Excellent written and verbal communication skills ● Basic experience in agile software development (Jira, Redmine, Confluence) ● Basic Knowledge about an Application Lifecycle Development ● Practical experience with Docker containerization ● First insights into automation with CI\CD (Jenkins, Gitlab && etc.) ● First insights with TDD ● Basic experience with cloud services ● User of git/github/gitlab ● Strong interpersonal skills with ability to work both independently and as part of a team
Preferred ● Redis, Postgres ● WebSockets, RabbitMQ, Protobuf ● Experience with IOT ● Experience with Blockchain.
If you’re down the blockchain rabbit hole and you’re looking for somewhere to apply your skills, go ahead and get in touch on: application@advanced-blockchain.com
● An environment that embraces freedom and autonomy and values team spirit and open communication. We encourage you to put forward your ideas and thoughts ● Office / co-working / events space in the heart of Berlin ● The opportunity to contribute to cutting edge projects in a new and exciting industry with the potential to positively reshape our world ● The opportunity to ‘be your own boss’ – take responsibility for your work from day one ● An international team of DLT pioneers ● Flexible working hours
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Who We Are
PowerSpike is a media & technology company focused on building the most compelling and streamlined destination for activating sponsorships within gaming communities. PowerSpike collaborates with 19,000+ gaming and esports influencers to execute premium, authentic influencer marketing campaigns. PowerSpike’s influencer network reaches over 125M viewers every month and grew over 1000% in 2018. The 4-year-old company is backed by Techstars, Cox Enterprises, the Philadelphia 76ers, the Dorm Room Fund, and Ocean Azul Partners.
What we’re building
PowerSpike is building the world’s first Influencer Exchange.
Like a traditional ad exchange, where buyers can place bids for ads in real-time, PowerSpike’s technology instead enables brands to bid on influencers. We’re taking the simple and streamlined experience of programmatic advertising, and combining it with the authenticity of influencer marketing to deliver instantly scalable influencer campaigns. Think Google Ads meets influencers.
Currently focused on the gaming space, our technology enables brands like Intuit Quickbooks and Activision Blizzard to launch influencer campaigns across our network of over 19,000+ Twitch streamers, just like they'd make a media buy.
Your work will directly help influencers pursue their dreams and assist some of the biggest brands in the world in streamlining their influencer marketing efforts.
What we need
We’re looking for a dedicated, passionate, innovative, and security-oriented Backend Web Developer to work on bringing PowerSpike’s databases and API’s to life. Reporting directly to the head of development, you will be responsible for building bug-free data solutions which will deliver information to influencers, brands and advertisers to help them make critical marketing decisions for their spends. If the words RPC, distributed servers, and scalable architecture excite you - then we want to talk.
We value learning, creativity, candor, and collaboration - and as one of the first people at PowerSpike, we’re looking for someone who can help us define our culture and processes for years to come. Simply put, we believe in hiring A+ people, giving them clarity in what success means, and then supporting them to their fullest potential.
Responsibilities
-Create adaptable solutions to collect and process data from an api
-Develop scalable APIs for both internal and public consumption
-Implement, maintain and improve scalable databases
-Write scalable solutions to process mass data in real time
-Design and ensure data security and integrity
-Develop reusable and sustainable code
Requirements
-3-5+ years experience in backend development
-Server side language (Go/Python preferred)
-Experience with Docker and Kubernetes
-Familiarity with AWS and Google Cloud
-Database language (MySQL preferred)
-Experience with distributed systems and microservice
-Experience with machine learning
-Ability to adapt to new situations and learn new skills/languages
-Knowledge of Git
Bonus Points If
-You’ve worked at a startup or attempted to launch your own startup before (even if it failed)
-You’re a gamer, streamer, or fan of live streaming platforms like Twitch/Mixer/YouTube Live
-You’ve worked on ad exchanges or advertising/influencer related technology in the past
-Competitive compensation -Stock options -Generous PTO -Medical Insurance -Early access to new products, games and services emerging in the space -Opportunity to be on the ground floor of one of the fastest growing startups in the gaming ecosystem
⎘ Copy Link ↗ Visit LinkAt Monzo we’re aiming to build the best current account in the world. We are always keen to hear from capable, creative engineers who want to help us accomplish that goal. We want our bank to be safe and secure for our customers, so security is very important to us
Security at Monzo
Monzo’s security team has a wide range of responsibilities, from infrastructure security to application security. As a bank, we are solving diverse, novel problems to ensure that our customers are safe and secure.
One of the guiding principles of security at Monzo is that security at the expense of user experience is a last resort. We aim to move mountains in the background such that we can build world-class features without compromising on security.
As a member of our security team you would be responsible for constantly improving the security of Monzo, and you would work closely with other teams to ensure that our systems are secure by design. Of course, security incidents can and do occur, and the security team is involved with many different types of incident response.
Our engineers have a variety of different backgrounds
We have several non-graduates; only some of us studied Computer Science; one of the team has a degree in Marketing; some of us have worked in huge companies; some have only ever worked in startups; others are former consultants. As long as you enjoy learning new things, we’d love to talk to you.
We encourage an open and transparent working environment
You can get involved in any aspect of the business you are interested in and, following Stripe’s example, all emails in the company are visible in an email archive. We regularly run hackathons in which people build things on our third party API and we contribute to open source software as much as possible. We’ve also made our product roadmap public and give sneak peeks of features in our community forum. Our blog is a good place to learn even more about what we do!You can get involved in any aspect of the business you are interested in and, following Stripe’s example, all emails in the company are visible in an email archive. We regularly run hackathons in which people build things on our third party API and we contribute to open source software as much as possible. We’ve also made our product roadmap public and give sneak peeks of features in our community forum. Our blog is a good place to learn even more about what we do!
Monzo works in project-based sprints in small, interdisciplinary teams
We have around 190 engineers out of roughly 1000 people in total - and we have big ambitions. As a security engineer here you'd be able to work directly with lots of teams across the company, and we run regular knowledge-sharing sessions so you’ll learn heaps about everything from how banks work to effective communication.
At Monzo you will get to work with a lot of exciting new technology.
We rely heavily on the following tools and technologies:
Go to write our application code (there’s an excellent interactive Go tutorial here) Cassandra for most persistent data storage Kafka for our asynchronous message queue Linkerd/Finagle for RPC Kubernetes and Docker to schedule and run our services (Oliver, our Head of Engineering, gave a great talk at KubeCon on how we use these technologies) AWS for most of our infrastructure React for internal web dashboards We also have two physical datacenter sites with actual cables to connect to various third parties You should apply if:
the work we’re doing sounds exciting! you want to be involved in building a product that you (and everyone you know) use every day you’re constantly looking for flaws in systems and can reason about how best to address them you’re keen to learn more about new technologies and the arcane inner workings of the financial industry you’re comfortable working in a team that deals with ambiguity you’re interested in distributed systems and writing resilient software you have some experience with strongly-typed languages (Go, Java, C, Scala etc.). Logistics
We can help you relocate to London, we can sponsor visas, and we're open to distributed working (as long as you can spend around 20% of your time in London).
We have payroll set up in five countries: the UK, Ireland, France, Poland and Spain. Right now, we can only hire people who work from those countries and we’ll keep this updated with new ones as we expand and are able to hire from more places 🌎
We offer competitive salaries based on skills and experience, which could be anywhere between £40,000 - £100,000 per year.
We care deeply about inclusive working practices and diverse teams. If you’d prefer to work part-time or as a job-share, we’ll try our best to make this happen. Just let us know in your application so we can plan for it.
We're usually always hiring for Backend Engineers in Security, so there's no closing date for this job.
Our interview process is normally a phone interview, a coding task and call to discuss it, and 2-3 hours of onsite interviews. We promise not to ask you any brain teasers or trick questions. We might design a system together on a whiteboard, the same way we often work together, but we won’t make you write code on one
Questions about this role? Head over to our careers page to read our FAQs (www.monzo.com/careers)
Our interview process is normally a phone interview, a coding task and call to discuss it, and 2-3 hours of onsite interviews. We promise not to ask you any brain teasers or trick questions. We might design a system together on a whiteboard, the same way we often work together, but we won’t make you write code on one
Apply ⎘ Copy Link ↗ Visit LinkPopsa is a design-led, engineering focussed company that uses machine learning to help people rediscover their best experiences and turn them into beautiful printed products.
We grew about 500% in 2018 and we’re now shipping over half a million photos a week to 50 countries around the world.
This position is a great opportunity for experienced software engineers with a background in the likes of Go, Python, PHP or Node.js looking to apply their existing skillset and learn and use Go in a production environment.
- Most of our backend code is written in Go with some Python and Node.js used where they're the right tool for the job.
- We’re entirely hosted on AWS and make extensive use of many of their services (over 30 at last count!)
- 15+ containerised microservices running in ECS (we’re open to exploring moving to Kubernetes in the future if appropriate). Our services talk protocol buffers over HTTP and are discovered with Consul.
- Dozens of event driven serverless functions running on Lambda, some running as APIs behind API Gateway and others as Step Functions
- Dockerised batch compute workflows
- NoSQL databases (predominantly DynamoDB and ElasticSearch)
- Serverless analytics data lake backed by S3 using Athena (PrestoDB)
- Terraform and Serverless Framework to manage our infrastructure as code
Read more about our platform technology stack here.
Some other blog posts you might find interesting too:
This is a central role and the work you’ll be doing will touch every aspect of the business. The Popsa platform doesn’t just power our mobile apps, but numerous internal business applications and custom integrations with our industrial print partners (some of this runs on a fleet of Raspberry PIs!), as well as a burgeoning data platform which will feed further into our growth strategies.
Our Head of Engineering Alex likes to describe our platform as an iceberg - the bit customers encounter is just the tip above the water - underneath is a dynamic event-driven structure that enables us to be a lean business that can iterate and experiment rapidly.
You will gain a unique perspective of a high growth business and have an opportunity to shape the landscape of our backend APIs, data pipelines and strategies, infrastructure automation and many more engineering goals.
Desired skill set:
Bonus:
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Role:
Advanced Blockchain AG are looking for an experienced Back-End Developer to join our core development team. You’ll be taking on new and ongoing projects with industry leading clients looking to be the first to implement and benefit from blockchain technology.
What we offer:
Responsibilities:
Main requirements:
Non-essential requirements:
Get in touch with Diane Danne our HR Manager on: danne@advancedblockchain.com for more information on the position or to schedule a call.
About HousingAnywhere
HousingAnywhere.com is the biggest global booking platform for mid-term rental accommodation in the world. Being a peer-to-peer marketplace, we create an experience that serves both sides of the rental accommodation market and creates a direct connection between tenants and landlords. HousingAnywhere.com is active in 50+ countries and 400+ cities. We are partners with 160+ universities worldwide and currently target the international students and young professionals market. We are expanding to other audiences as well.
In 2017, we were awarded 4th most innovative company in the Netherlands and the 1st most innovative company in Rotterdam by the Dutch Chamber of Commerce.
In 2018, we have been honored by being the fastest growing propTech company in the Netherlands as part of the Technology Fast 50 ranking of Deloitte.
The team
Our engineering team consists of a group of 30 people (product leads, engineering leads, architects, product owners, front-end engineers, back-end engineers, QA engineers and UX/UI designers), all passionate about our expertise.
Within the engineering team, we are organized in multiple cross-functional teams. By applying for this role, you will have the chance to become part of the Platform team.
We, the Platform team, are responsible for the core application of HousingAnywhere and are the team where it all started for HousingAnywhere. Here you’ll find those we call the “dinosaurs” of HousingAnywhere. Djordy, our CEO, started our team back when he was Head of Product.
We have ownership of listing management (listing creation, calendar management and listing representation) and also of chat and bookings functionalities. Down the line, everything we do should add to conversions and should help HousingAnywhere grow to be the number 1 market place for students and young professionals in the world.
Our mission as a team is to provide high-quality matching between tenants and landlords and to drive trust between the users of the marketplace. We think about these challenges every day in order to build a world-class product. If this sounds interesting to you, don't hesitate to read on.
About your role and impact in the platform team
HousingAnywhere has entered a scale-up phase in which we have seen impressive growth in terms of bookings and liquidity in the marketplace. This growth has brought us many technical challenges. On one end of the stack we build features and improvements to optimize conversions, on the other end we are making our infrastructure more resilient for future growth.
Some of the challenges we are tackling:
On the frontend side:
Consolidate our React based frontend with tests and consistent design Provide users with a more fulfilling mobile experience through PWA technologies and principles Integrate real-time technology to deliver content to users quickly Continuously improve SEO through performance and content delivery
On the backend side:
Pragmatically redesigning the core system to identify services and run them outside the main monolith Moving the core platform to Kubernetes and continuous deployment Rethinking the way we represent and store data to allow easier integrations through events and denormalization Monitoring and improving the performance of our private API. Your role in the team is to contribute to solving these challenges by implementing solutions and assisting our team so that our innovative technology can support future business needs.
As a Senior Software Engineer we expect you to mentor our less senior team members and to work closely with our team lead and PO to help them solve technical challenges they face.
We also expect you to challenge our choices and practices by bringing your opinion in the mix, because only by rethinking our best practices we can really evolve as people and as a company.
Our stack
In frontend we are React lovers. We use Redux, CSS-in-JS, TypeScript, NodeJS and all tools related to this stack. Our backend is powered by Golang backed with a Postgres database. We’re currently moving our backend to a service-oriented architecture (microservices). Our main infrastructure is in Google Cloud Platform. We've been using React, GraphQL and Golang in production environments since the early days. Since a few years we’ve started using Kubernetes and nowadays all our new services run in the cluster.
What we are looking for in a Senior Engineer:
Experience needed:
What we offer:
Practical Info!